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(Circulation. 1995;92:1720-1725.)
© 1995 American Heart Association, Inc.
Articles |
Triggering of Acute Myocardial Infarction Onset by Episodes of Anger
From the Institute for Prevention of Cardiovascular Disease (M.A.M., M.M., J.B.S., R.P.M., G.H.T., J.E.M.), Cardiovascular Division, Department of Medicine, Deaconess Hospital, Harvard Medical School, Boston, Mass; the Department of Epidemiology (M.A.M., M.M.), Harvard School of Public Health, Boston; the Mind/Body Medical Institute (S.C.J., R.F., H.B.), Division of Behavioral Medicine, Department of Medicine, Deaconess Hospital, Harvard Medical School, Boston; and the Department of Psychiatry (R.F.), State University of New York, Stony Brook.
Correspondence to Murray A. Mittleman, MDCM, DrPH, Institute for Prevention of Cardiovascular Disease, Cardiovascular Division, Deaconess Hospital, 1 Autumn St, Fifth Floor, Boston, MA 02215.
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Abstract |
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 Top Abstract IntroductionMethodsResultsDiscussionAppendix 1References |
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Background Many anecdotes and several uncontrolled case series have suggested that emotionally stressful events, and more specifically, anger, immediately precede and appear to trigger the onset of acute myocardial infarction. However, controlled studies to determine the relative risk of myocardial infarction after episodes of anger have not been reported.
Methods and Results We interviewed 1623 patients (501 women) an average of 4 days after myocardial infarction. The interview identified the time, place, and quality of myocardial infarction pain and other symptoms, the estimated usual frequency of anger during the previous year, and the intensity and timing of anger and other potentially triggering factors during the 26 hours before the onset of myocardial infarction. Anger was assessed by the onset anger scale, a single-item, seven-level, self-report scale, and the state anger subscale of the State-Trait Personality Inventory. Occurrence of anger in the 2 hours preceding the onset of myocardial infarction was compared with its expected frequency using two types of self-matched control data based on the case-crossover study design. The onset anger scale identified 39 patients with episodes of anger in the 2 hours before the onset of myocardial infarction. The relative risk of myocardial infarction in the 2 hours after an episode of anger was 2.3 (95% confidence interval, 1.7 to 3.2). The state anger subscale corroborated these findings with a relative risk of 1.9 (95% confidence interval, 1.3 to 2.7). Regular users of aspirin had a significantly lower relative risk (1.4; 95% confidence interval, 0.8 to 2.6) than nonusers (2.9; 95% confidence interval, 2.0 to 4.1) (P<.05).
Conclusions Episodes of anger are capable of triggering the onset of acute myocardial infarction, but aspirin may reduce this risk. A better understanding of the manner in which external events trigger the onset of acute cardiovascular events may lead to innovative preventive strategies aimed at severing the link between these external stressors and their pathological consequences.
Key Words: myocardial infarction • anger
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Introduction |
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TopAbstractIntroductionMethodsResultsDiscussionAppendix 1References |
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It is well recognized that in certain cases, emotionally stressful events, and more specifically, episodes of anger, immediately precede and appear to trigger the onset of acute myocardial infarction.1 2 3 4 5 6 In approximately 4% to 18% of cases of myocardial infarction, emotional stress has been reported to occur immediately before the onset of symptoms.2 3 4 However, because these studies lack necessary control data, it has not been possible to quantify the association between emotionally stressful events, such as anger, and onset of acute myocardial infarction, nor to examine factors that might modify the risk of triggering.
Previous studies of the etiological role of psychological stress and the occurrence of coronary artery disease have almost exclusively focused on chronic risk and have yielded controversial results.7 Recent studies suggest that hostility, cynicism, and anger comprise a critical "toxic" component8 of type A behavior and are more strongly associated with the incidence of coronary artery disease than other aspects of global type A behavior.7 8 9 10 We therefore chose to focus on discrete episodes of anger as a potential trigger of acute myocardial infarction. Clarification of the role of anger as a trigger is important because a better understanding of triggering could facilitate approaches to sever the link between potential triggering activities and the transient physiological risk states that produce myocardial infarction.
The Determinants of Myocardial Infarction Onset Study (Onset Study) is a multicenter, interview-based study in patients with acute myocardial infarction.11 In this study, we used a case-crossover design12 13 to quantify the relative risk of myocardial infarction onset after discrete episodes of anger in 1623 patients with confirmed acute myocardial infarction.
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Methods |
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TopAbstractIntroductionMethodsResultsDiscussionAppendix 1References |
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Study Population
The Onset Study was conducted in 22 community hospitals and 23 tertiary care centers (see "Appendix"). Between August 1989 and March 1993, 1623 patients (1122 men and 501 women; age range, 20 to 92 years) were interviewed a median of 4 days (range, 0 to 30) after myocardial infarction.
Interviewers identified eligible cases by reviewing coronary care unit admission logs and patients' charts. For inclusion, patients were required to meet all of the following criteria: (1) elevated creatine kinase level, with positive MB isoenzymes, (2) an identifiable onset of pain or other symptoms typical of the onset of infarction, and (3) ability to complete a structured interview. The protocol was approved by the institutional review board at each participating center, and informed consent was obtained from each patient.
Interview
Interviewers were trained by personal instruction, a
training
manual, an instructional videocassette, and through ongoing feedback
from the study coordinator. Approximately one third of the interviews
were audiotaped for randomly selected quality control checks of the
coding accuracy. To minimize bias in information ascertainment, the
interviewers were not informed of the duration of the hypothesized
hazard period.
The interview identified the time, place, and quality of myocardial infarction pain and other symptoms, the estimated usual frequency of exposure during the previous year, and the intensity and timing of exposure during the 26 hours before the onset of pain for episodes of anger and other potential triggers of the onset of myocardial infarction. Details pertaining to exposure to heavy physical exertion have been reported elsewhere.11
To study anger as a trigger
of the onset of myocardial infarction, we
developed the onset anger scale, a new seven-level self-report anger
scale. Patients were shown a chart consisting of seven levels of anger
(Table 1
) and were asked to estimate their usual
frequency of exposure to each level during the previous year ("usual
annual frequency"). They were also asked to state the timing and
level of anger during each of the 26 hours before the onset of
myocardial infarction. Patients were considered exposed if they
reported a peak level of anger greater than or equal to level 5 (very
angry, furious, or enraged) during the interval of interest.
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In addition to the onset anger scale, we administered the state anger, anxiety, and curiosity subscales of the State-Trait Personality Inventory (STPI)14 to a subset of 881 patients. Patients were asked to respond to the STPI instrument, first focusing on the 2-hour period preceding symptom onset and then for the same 2-hour period on the preceding day. The STPI data were analyzed by determining the distribution of scores for each subscale in the control period. Individuals with responses above the 75th percentile were considered exposed.
Study Design
A new epidemiological technique called the
case-crossover design
(Fig 1) was developed for the Onset
Study.11 12 This approach was developed to assess the
change in risk of an acute event during a brief "hazard period"
after exposure to a transient risk factor. The important innovative
feature of this approach is that control information for each patient
is based on his or her past exposure
experience.11 12 13
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For the onset anger scale, a 2-hour hazard period immediately preceding the onset of myocardial infarction was compared with two types of control data obtained from the patients: (1) their usual frequency of exposure to episodes of anger over the past year and (2) their actual exposure in the comparable 2-hour "control period" at the same time on the day before myocardial infarction. For the STPI subscales, data were available only for the second approach. To help maintain comparability of reporting of exposures for the hazard and control periods, the interview treated the 26-hour period before the onset of myocardial infarction as one long hazard period.
Statistical Analysis
The analysis of case-crossover data is a
new application of
standard methods for stratified data
analysis.12 13 15 16
In this analysis, the stratifying variable is the individual patient,
as in a crossover experiment.
The ratio of the observed exposure frequency in the hazard period to the expected frequency (from the control information) was used to calculate estimates of the odds ratio as a measure of relative risk.11 12 13 Expected frequencies were estimated two ways: (1) usual annual frequency of episodes of anger and (2) frequency of episodes of anger in the control period on the day before onset.
Usual Annual Frequency of Episodes of Anger
This was
the primary analytical method used for analysis of the
onset anger scale. The amount of person-time exposed to episodes of
anger was estimated by multiplying the reported usual annual frequency
of exposure by its hypothesized usual duration. Unexposed person-time
was then calculated by subtracting the exposed person-time in hours
from the number of hours in a year. Hazard periods of various durations
were analyzed using methods for cohort studies with sparse data in each
stratum.12 13 17
Frequency
of Episodes of Anger in the Control Period on the Day
Before Onset
Relative risks were computed using standard methods for
matched-pair, case-control studies. Instead of concordant and
discordant pairs of subjects, however, each patient contributed a pair
of intervals—a "hazard" period and a "control"
period,
which were either concordant or discordant for
exposure.11 12 13 15 Both
STPI and onset anger scale data
were analyzed using this approach. Ninety-five percent confidence
intervals and two-sided probability values were computed using exact
methods based on the binomial distribution.15 Conditional
logistic regression was used to control for within-person
confounding.11 12
Modification of the relative
risk was assessed by comparing relative
risks in subgroups defined by different levels of the potential effect
modifier. Subgroups were compared using the 
2 test for
homogeneity.15 To estimate induction time (the length of
time from anger to the onset of myocardial infarction), relative risks
were calculated for each 1-hour period before the onset of myocardial
infarction, with statistical control for subsequent
exposure.18
The correlation between the onset anger scale and STPI data was assessed using Spearman's rank correlation.19 Paired comparisons of the STPI scores in the hazard and control period were performed with the Wilcoxon signed rank test.19
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Results |
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TopAbstractIntroductionMethodsResultsDiscussionAppendix 1References |
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Characteristics of the study sample are shown in Table 2
. Of
the 1623 patients, 8.0% (130 patients) and
2.4% (39 patients) reported episodes of anger greater than or equal to
level 5 on the onset anger scale in the 24-hour period and 2-hour
period before myocardial infarction, respectively. The most frequent
causes were arguments with family members (25%), conflicts at work
(22%), and legal problems (8%).
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Onset Anger Scale
Usual Annual Frequency of Episodes of
Anger
Based on the analysis using usual annual frequency of exposure
for
control, the relative risk for the onset of myocardial infarction was
elevated only during the first 2 hours after an outburst of anger.
Relative risks associated with outbursts of anger occurring more than 2
hours before the onset of myocardial infarction were not significantly
different from 1.0 (Fig 2), indicating that the
induction time was less than 2 hours. Therefore, all subsequent
analyses were based on a 2-hour hazard period. The relative risk in the
2-hour period immediately after episodes of anger self-reported to be
at least level 5 on the onset anger scale was 2.3 (95% confidence
interval, 1.7 to 3.2).
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Frequency of Episodes of Anger in the
Control Period on the Day
Before Onset
In the standard matched-pair analysis, 36 cases were
exposed only
in the 2-hour hazard period compared with 9 exposed only in the control
period (the same 2-hour period the day before). Three subjects were
exposed at both times. This analysis yielded a relative risk for
myocardial infarction of 4.0 (95% confidence interval, 1.9 to 9.4).
There were only 2 patients who reported both heavy exertion of at least
6 metabolic equivalents of the task (METs) and an episode of anger
above level 4 on the onset anger scale during the hazard period. There
were no patients exposed to both in the control period. The relative
risk associated with an episode of anger was not materially altered in
a conditional logistic regression analysis that statistically
controlled for exposure to heavy physical exertion of at least 6
METs.
State-Trait Personality Inventory Subscales
There was a modest
but statistically significant correlation
between the level of anger reported on the onset anger scale in the
hazard period and the anger score from the STPI state anger subscale
measured for the same time period (r=.25,
P=.03).
Table 3 shows that in the hazard
period, patients
reported significantly higher scores on the anger (P=.001)
and anxiety (P=.02) subscales but not on the curiosity
subscale (P=.20).
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The relative risk of myocardial
infarction onset after exposures above
the 75th percentile for the anger, anxiety, and curiosity subscales is
shown in Table 4. The data indicate a significantly
elevated relative risk associated with higher levels of anger (1.9;
95% confidence interval, 1.3 to 2.7) and anxiety (1.6; 95% confidence
interval, 1.1 to 2.2). There was no association found for the curiosity
subscale (0.9; 95% confidence interval, 0.6 to 1.4).
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Modification of the Relative Risk
Potential modifiers of the
relative risk were examined (Table 5) using the onset anger
scale. The relative risk was
significantly lower among regular users of aspirin (1.4; 95%
confidence interval, 0.8 to 2.6) than among nonusers (2.9; 95%
confidence interval, 2.0 to 4.1) (P<.05). The relative risk
tended to be lower in men than women and among regular users of
ß-adrenergic antagonists than nonusers; however, these differences
were not statistically significant. There were also trends toward lower
relative risks among patients with a history of previous myocardial
infarction and hypertension; however, these two groups comprised the
major indications for use of aspirin and ß-adrenergic antagonists in
this population. There were not enough data to further stratify these
subgroups to resolve whether the clinical indication, the treatment
itself, or other patient characteristics such as use of other
medications were responsible for the heterogeneity in the observed
relative risks.
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Discussion |
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TopAbstractIntroductionMethodsResultsDiscussionAppendix 1References |
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Episodes of anger as self-reported on both the Onset Study anger scale and the State anger subscale of the State-Trait Personality Inventory14 were associated with a transient doubling of the baseline risk of the onset of myocardial infarction in the subsequent 2 hours. These results were found to be consistent when two different types of control data were used for the onset anger scale.
Slightly more than 2% and 8% of the patients studied reported episodes of anger in the 2- and 24-hour periods immediately preceding the onset of symptoms, respectively—percentages similar to those reported in previous uncontrolled studies of myocardial infarction onset.3 4 One prior study reported a higher percentage of subjects exposed to emotional stress immediately before myocardial infarction onset,2 but this study included other types of emotional stress in addition to anger.
Although there are no population-based studies of the effect of outbursts of anger on the incidence of cardiac events, psychological stress in general has been reported to be associated with increases in cardiac events. Trichopoulos et al20 found an excess of cardiac deaths in the days after the 1981 Athens earthquake and proposed that this excess was due to mental stress triggering the onset of infarction.
Clarification of the mechanisms through which anger may trigger myocardial infarction is aided by the finding by our group and others that heavy physical exertion, a more easily quantifiable exposure than anger, can trigger myocardial infarction.11 21 The analogy is strengthened by the similarity of the physiological responses associated with heavy exertion and with anger.22 23 24 25
Several well-documented physiological effects of anger make the hypothesis of triggering of myocardial infarction by an outburst of anger biologically plausible. Mental stress has been shown to increase heart rate, blood pressure, and myocardial oxygen demand.22 These effects are mediated at least in part by catecholamine secretion.22 Verrier et al26 have reported that anger, induced in a dog model, elicited increases in coronary vascular resistance and ischemic ST segment changes. Mental stress has been documented to increase coronary vascular resistance in the presence of minimal angiographically detectable underlying coronary artery disease.22 27 A recent study documented that higher levels of self-reported anger induced by an anger recall task can produce coronary vasoconstriction, but only in narrowed segments.28 It has also been shown that a recalled anger task is more potent than other mental stressors or exercise in eliciting myocardial ischemia, as measured by a reduction in left ventricular ejection fraction in patients with documented coronary artery disease.29 In addition to hemodynamic effects, mental stress also has been shown to increase platelet aggregability24 as well as coagulation and opposing fibrinolytic factors.25
A proposed mechanism for triggering of myocardial infarction by anger is that onset occurs when a vulnerable but not necessarily stenotic atherosclerotic plaque disrupts in response to hemodynamic stresses; thereafter, hemostatic and vasoconstrictive forces determine whether the resultant thrombus becomes occlusive.22 30 The rarity with which a potential trigger becomes an actual trigger is probably a result of the infrequent coexistence of an atherosclerotic plaque vulnerable to disruption and other conditions required for acute occlusive thrombosis.
The relative risk tended to vary in subgroups of interest: Regular use of aspirin appeared to be protective, conferring a relative risk approximately half that observed in nonusers. Users of ß-adrenergic antagonists also tended to have a lower relative risk of myocardial infarction onset after outbursts of anger; women tended to have a higher spike in risk than men.
A possible explanation for the ability of aspirin, and perhaps ß-adrenergic blockers, to reduce the relative risk of myocardial infarction onset after anger is that these agents may decrease the likelihood of plaque disruption and acute occlusive thrombus formation in response to an outburst of anger. ß-Adrenergic blockers may reduce the hemodynamic response that may lead to plaque disruption, whereas aspirin may prevent platelet aggregation leading to thrombus formation.
A potential limitation of the present study is recall bias, in that patients may not report episodes of anger with equal accuracy in the period immediately preceding myocardial infarction onset as in control periods. The case-crossover design helps to minimize this bias during data collection by treating the entire 26-hour interval before myocardial infarction onset as one long hazard period. The observed modification of the relative risk by regular use of aspirin also argues against significant recall bias because it is unlikely that use of this medication would alter the fidelity of reporting of anger. Furthermore, episodes of anger of level 5 or above on the onset anger scale are relatively rare events and are easy to remember and report. Additionally, the specificity observed for anger and anxiety as opposed to curiosity on the STPI subscales also argue against recall bias.
Because the case-crossover design uses self-matching, there is no variability in traditional chronic risk factors for myocardial infarction within each stratum. Thus, there can be no confounding by these chronic risk factors.11 12 16 Controlling for circadian rhythm and heavy exertion of 6 METs or higher, the only other well-documented trigger of myocardial infarction onset, did not materially alter the results. This indicates that the observed effect of anger was independent of all characteristics that are stable in an individual over time as well as circadian rhythm and exposure to heavy exertion greater than or equal to 6 METs.
The Onset Study anger scale is a new instrument that previously has not been characterized against other psychological instruments for assessing anger or hostility, such as the State-Trait Anger Scale14 or the Cook-Medley Hostility Scale.31 However, in this report, we have demonstrated a modest correlation with the STPI instrument, and the effect of anger on myocardial infarction onset was very similar when assessed with either instrument. The finding of specificity for the anger and anxiety subscales is also reassuring.
In addition, the case-crossover study design ensures that whatever each patient's interpretation of each scale, the same interpretation will be used for case and control data, since each patient serves as his or her own control. Therefore, each scale provides a consistent measure that may be used to make internally valid comparisons between case and control exposure information.
The consistency of the relative risks obtained with the onset anger scale using two types of control data and with the state anger subscale of the STPI14 further supports the validity of the findings. The slightly higher relative risk estimated using control exposure data from the period on the day before the myocardial infarction than that obtained with control data based on usual frequency may be explained by a tendency of the patients to overreport their usual annual frequency. This would lead to a slight underestimation of the relative risk with this method. Alternatively, the patients may have underreported exposure on the day before their infarction. It is also possible that this difference occurred due to random sampling variability because estimators of relative risk are much more efficient when usual annual frequency control data are used.13 This is reflected in the narrower width of the 95% confidence intervals obtained using the usual annual frequency control data.
There is a possibility of bias caused by differential survival of cases who had myocardial infarction triggered by different mechanisms. For example, if patients whose infarctions were triggered by episodes of anger were more likely to survive than those whose infarctions were unrelated to anger, then the apparent relative risk may be overestimated. This scenario, although possible, seems unlikely.
Previous reports have shown that heavy physical exertion can trigger the onset of acute myocardial infarction.11 21 32 In this report, we provide data indicating that episodes of anger, which produce similar physiological responses,22 23 24 25 are also triggers. The finding in the present study that aspirin appears to eliminate the risk caused by discrete episodes of anger and that in our prior study that regular exertion greatly decreases the risk posed by heavy physical exertion11 are examples of the manner in which triggering research may contribute to prevention of cardiovascular disease. The goal would not be to prevent potential triggering activities but to sever the link between a potential trigger and its pathological consequences.
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Acknowledgments |
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We are grateful to the Onset Study interviewers for their dedication. This study was supported by a grant (HL-41016) from the National Heart, Lung, and Blood Institute. Dr Mittleman was supported by a Bourse de formation en recherche from the Fonds de la Recherche en Santé du Québec.
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Appendix 1 |
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TopAbstractIntroductionMethodsResultsDiscussionAppendix 1References |
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Hospitals and Sponsors
South Shore Hospital, South Weymouth, Mass; Charles Gaughan, MD.
New England Deaconess Hospital, Boston; Stuart Zarich, MD.
Carney Hospital, Boston; Robert Rimmer, MD.
St Vincent Hospital, Worcester, Mass; Richard Bishop, MD.
Carle Heart Center, Urbana, Ill; Bruce Handler, MD.
Burbank Hospital, Fitchburg, Mass; Paul Block, MD.
Hahneman Hospital, the Medical Center of Central Massachusetts, Worcester; John A. Ferrullo, MD; Daniel Miller, MD.
Beth Israel Hospital, Boston; Richard Pasternak, MD; Anthony Ware, MD.
Brigham and Women's Hospital, Boston; Elliott Antman, MD.
Newton Wellesley Hospital, Newton, Mass; James Sidd, MD.
St Luke's/Roosevelt Hospital Center, New York, NY; Judith Hochman, MD.
Memorial Hospital, the Medical Center of Central Massachusetts, Worcester; Joshua Greenberg, MD.
Norwood Hospital, Norwood, Mass; George Bero, MD.
Faulkner Hospital, Jamaica Plain, Mass; Alberto Ramirez, MD.
Washington Hospital Center, Washington, DC; Lucy Van Voorhees, MD.
New England Medical Center, Boston; Shapur Naimi, MD.
Massachusetts General Hospital, Boston; Patrick O'Gara, MD.
University of Massachusetts Medical Center, Worcester; Joel Gore, MD.
Leominster Hospital, Leominster, Mass; Nicholas Mercadante, MD.
Overlook Hospital, Summit, NJ; John Gregory, MD.
Tampa General Hospital, James A. Haley Tampa Veterans Hospital, Tampa, FL; Robert Zobel, MD, PhD.
Boston University Medical Center, Boston; Michael Klein, MD.
Rush Presbyterian/St Luke's Medical Center, Chicago; Philip R. Liebson, MD.
Stony Brook Health Sciences Center, Stony Brook, NY; Peter Cohn, MD; Richard Friedman, PhD.
Memorial Hospital of Rhode Island, Pawtucket; Abdul Khan, MD.
Flushing Hospital Medical Center, Flushing, NY; Samuel Zoneraich, MD.
West Virginia VA Medical Center, Huntington; Robert Touchon, MD.
Milford Whitensville Regional Hospital, Milford, Mass; Arthur Sgalia, MD.
Quincy Hospital, Quincy, Mass; Alan Berrick, MD.
Montefiore Medical Center, Bronx, NY; Mark Goldberger, MD.
VA Medical Center, Long Beach, Calif; Amer Alzarka, MD.
Denver General Hospital, Denver, Colo; Koonlawee Nademanee, MD.
Concord Hospital, Concord, NH; Carl Levick, MD.
St Elizabeth's Hospital, Brighton, Mass; Bernard Kosowsky, MD.
Danbury Hospital, Danbury, Conn; David L. Copen, MD.
Harlem Hospital Center, New York, NY; Jay Brown, MD (deceased).
Boston City Hospital; Sheilah Bernard, MD.
Metro West Medical Center—Framingham Union Hospital, Framingham, Mass; Harton S. Smith, MD.
Goddard Memorial Hospital, Stoughton, Mass; Myron Mazur, MD.
Illinois Heart Institute, Peoria; Paul Schmidt, MD.
New Britain General Hospital, New Britain, Conn; Milton Sands, MD.
New York Hospital/Cornell Medical Center, New York, NY; Robert Allan, PhD; Stephen Scheidt, MD.
Received March 1, 1995; revision received April 11, 1995; accepted April 16, 1995.
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  A. T. Tiel Groenestege, G. J.E. Rinkel, J. G. van der Bom, A. Algra, and C. J.M. Klijn The Risk of Aneurysmal Subarachnoid Hemorrhage During Pregnancy, Delivery, and the Puerperium in the Utrecht Population: Case-Crossover Study and Standardized Incidence Ratio Estimation Stroke, April 1, 2009; 40(4): 1148 - 1151. [Abstract] [Full Text] [PDF]
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 M. Hassan, K. M. York, H. Li, Q. Li, Y. Gong, T. Y. Langaee, R. B. Fillingim, J. A. Johnson, and D. S. Sheps Association of {beta}1-Adrenergic Receptor Genetic Polymorphism With Mental Stress-Induced Myocardial Ischemia in Patients With Coronary Artery Disease Arch Intern Med, April 14, 2008; 168(7): 763 - 770. [Abstract] [Full Text] [PDF]
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 S. H. Golden, S. Malhotra, G. S. Wand, F. L. Brancati, D. Ford, and K. Horton Adrenal Gland Volume and Dexamethasone-Suppressed Cortisol Correlate with Total Daily Salivary Cortisol in African-American Women J. Clin. Endocrinol. Metab., April 1, 2007; 92(4): 1358 - 1363. [Abstract] [Full Text] [PDF]
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J. C. Stewart, D. L. Janicki, M. F. Muldoon, K. Sutton-Tyrrell, and T. W. Kamarck Negative Emotions and 3-Year Progression of Subclinical Atherosclerosis Arch Gen Psychiatry, February 1, 2007; 64(2): 225 - 233. [Abstract] [Full Text] [PDF]
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 K. W. Davidson, K. J. Trudeau, E. van Roosmalen, M. Stewart, and S. Kirkland Perspective: Gender as a Health Determinant and Implications for Health Education Health Educ Behav, December 1, 2006; 33(6): 731 - 743. [Abstract] [PDF]
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G. H. Tofler and J. E. Muller Triggering of Acute Cardiovascular Disease and Potential Preventive Strategies Circulation, October 24, 2006; 114(17): 1863 - 1872. [Full Text] [PDF]
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 D Q Rich, M H Kim, J R Turner, M A Mittleman, J Schwartz, P J Catalano, and D W Dockery Association of ventricular arrhythmias detected by implantable cardioverter defibrillator and ambient air pollutants in the St Louis, Missouri metropolitan area Occup. Environ. Med., September 1, 2006; 63(9): 591 - 596. [Abstract] [Full Text] [PDF]
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 P C Strike, L Perkins-Porras, D L Whitehead, J McEwan, and A Steptoe Triggering of acute coronary syndromes by physical exertion and anger: clinical and sociodemographic characteristics Heart, August 1, 2006; 92(8): 1035 - 1040. [Abstract] [Full Text] [PDF]
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 A. V. Diez Roux, N. Ranjit, L. Powell, S. Jackson, T. T. Lewis, S. Shea, and C. Wu Psychosocial factors and coronary calcium in adults without clinical cardiovascular disease. Ann Intern Med, June 6, 2006; 144(11): 822 - 831. [Abstract] [Full Text] [PDF]
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 D. C. Vinson and V. Arelli State Anger and the Risk of Injury: A Case-Control and Case-Crossover Study Ann. Fam. Med, January 1, 2006; 4(1): 63 - 68. [Abstract] [Full Text] [PDF]
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 D. Q. Rich, J. Schwartz, M. A. Mittleman, M. Link, H. Luttmann-Gibson, P. J. Catalano, F. E. Speizer, and D. W. Dockery Association of Short-term Ambient Air Pollution Concentrations and Ventricular Arrhythmias Am. J. Epidemiol., June 15, 2005; 161(12): 1123 - 1132. [Abstract] [Full Text] [PDF]
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R. D. Lane, C. Laukes, F. I. Marcus, M. A. Chesney, L. Sechrest, K. Gear, C. L. Fort, S. G. Priori, P. J. Schwartz, and A. Steptoe Psychological Stress Preceding Idiopathic Ventricular Fibrillation Psychosom Med, May 1, 2005; 67(3): 359 - 365. [Abstract] [Full Text] [PDF]
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P. C. Strike and A. Steptoe Behavioral and Emotional Triggers of Acute Coronary Syndromes: A Systematic Review and Critique Psychosom Med, March 1, 2005; 67(2): 179 - 186. [Abstract] [Full Text] [PDF]
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 C. J. Lavie and R. V. Milani Prevalence of Hostility in Young Coronary Artery Disease Patients and Effects of Cardiac Rehabilitation and Exercise Training Mayo Clin. Proc., March 1, 2005; 80(3): 335 - 342. [Abstract] [PDF]
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S. Koton, D. Tanne, N. M. Bornstein, and M. S. Green Triggering risk factors for ischemic stroke: A case-crossover study Neurology, December 14, 2004; 63(11): 2006 - 2010. [Abstract] [Full Text] [PDF]
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V. Puli, D. Eterovi, D. Miri, L. Giunio, A. Lukin, and D. Fabijani Triggering of Ventricular Tachycardia by Meteorologic and Emotional Stress: Protective Effect of {beta}-Blockers and Anxiolytics in Men and Elderly Am. J. Epidemiol., December 1, 2004; 160(11): 1047 - 1058. [Abstract] [Full Text] [PDF]
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M. M. Burg, R. Lampert, T. Joska, W. Batsford, and D. Jain Psychological Traits and Emotion-Triggering of ICD Shock-Terminated Arrhythmias Psychosom Med, November 1, 2004; 66(6): 898 - 902. [Abstract] [Full Text] [PDF]
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S. H. Boyle, R. B. Williams, D. B. Mark, B. H. Brummett, I. C. Siegler, M. J. Helms, and J. C. Barefoot Hostility as a Predictor of Survival in Patients With Coronary Artery Disease Psychosom Med, September 1, 2004; 66(5): 629 - 632. [Abstract] [Full Text] [PDF]
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P. C. Strike, K. Magid, L. Brydon, S. Edwards, J. R. McEwan, and A. Steptoe Exaggerated Platelet and Hemodynamic Reactivity to Mental Stress in Men With Coronary Artery Disease Psychosom Med, July 1, 2004; 66(4): 492 - 500. [Abstract] [Full Text] [PDF]
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E. D. Eaker, L. M. Sullivan, M. Kelly-Hayes, R. B. D'Agostino Sr, and E. J. Benjamin Anger and Hostility Predict the Development of Atrial Fibrillation in Men in the Framingham Offspring Study Circulation, March 16, 2004; 109(10): 1267 - 1271. [Abstract] [Full Text] [PDF]
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K. A. Matthews, B. B. Gump, K. F. Harris, T. L. Haney, and J. C. Barefoot Hostile Behaviors Predict Cardiovascular Mortality Among Men Enrolled in the Multiple Risk Factor Intervention Trial Circulation, January 6, 2004; 109(1): 66 - 70. [Abstract] [Full Text] [PDF]
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R. F. DeBusk Sexual Activity in Patients With Angina JAMA, December 17, 2003; 290(23): 3129 - 3132. [Full Text] [PDF]
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R. S. Wilson, J. L. Bienias, C. F. Mendes de Leon, D. A. Evans, and D. A. Bennett Negative Affect and Mortality in Older Persons Am. J. Epidemiol., November 1, 2003; 158(9): 827 - 835. [Abstract] [Full Text] [PDF]
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J. W. Smoller, M. H. Pollack, S. Wassertheil-Smoller, B. Barton, S. L. Hendrix, R. D. Jackson, T. Dicken, A. Oberman, and D. S. Sheps Prevalence and Correlates of Panic Attacks in Postmenopausal Women: Results From an Ancillary Study to the Women's Health Initiative Arch Intern Med, September 22, 2003; 163(17): 2041 - 2050. [Abstract] [Full Text] [PDF]
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W Kirkup and D W Merrick A matter of life and death: population mortality and football results J Epidemiol Community Health, June 1, 2003; 57(6): 429 - 432. [Abstract] [Full Text]
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J S Chi and R A Kloner Stress and myocardial infarction Heart, May 1, 2003; 89(5): 475 - 476. [Full Text] [PDF]
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J. E. J. Gallacher, P. M. Sweetnam, J. W. G. Yarnell, P. C. Elwood, and S. A. Stansfeld Is Type A Behavior Really a Trigger for Coronary Heart Disease Events? Psychosom Med, May 1, 2003; 65(3): 339 - 346. [Abstract] [Full Text] [PDF]
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H Kuper and M Marmot Job strain, job demands, decision latitude, and risk of coronary heart disease within the Whitehall II study J Epidemiol Community Health, February 1, 2003; 57(2): 147 - 153. [Abstract] [Full Text] [PDF]
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 I Etienney, L Beaugerie, C Viboud, and A Flahault Non-steroidal anti-inflammatory drugs as a risk factor for acute diarrhoea: a case crossover study Gut, February 1, 2003; 52(2): 260 - 263. [Abstract] [Full Text] [PDF]
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L. A. Chaput, S. H. Adams, J. A. Simon, R. S. Blumenthal, E. Vittinghoff, F. Lin, E. Loh, and K. A. Matthews Hostility Predicts Recurrent Events among Postmenopausal Women with Coronary Heart Disease Am. J. Epidemiol., December 15, 2002; 156(12): 1092 - 1099. [Abstract] [Full Text] [PDF]
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R. Lampert, T. Joska, M. M. Burg, W. P. Batsford, C. A. McPherson, and D. Jain Emotional and Physical Precipitants of Ventricular Arrhythmia Circulation, October 1, 2002; 106(14): 1800 - 1805. [Abstract] [Full Text] [PDF]
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L. E. Spieker, D. Hurlimann, F. Ruschitzka, R. Corti, F. Enseleit, S. Shaw, D. Hayoz, J. E. Deanfield, T. F. Luscher, and G. Noll Mental Stress Induces Prolonged Endothelial Dysfunction via Endothelin-A Receptors Circulation, June 18, 2002; 105(24): 2817 - 2820. [Abstract] [Full Text] [PDF]
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P. P. Chang, D. E. Ford, L. A. Meoni, N.-Y. Wang, and M. J. Klag Anger in Young Men and Subsequent Premature Cardiovascular Disease: The Precursors Study Arch Intern Med, April 22, 2002; 162(8): 901 - 906. [Abstract] [Full Text] [PDF]
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K. A. Matthews and B. B. Gump Chronic Work Stress and Marital Dissolution Increase Risk of Posttrial Mortality in Men From the Multiple Risk Factor Intervention Trial Arch Intern Med, February 11, 2002; 162(3): 309 - 315. [Abstract] [Full Text] [PDF]
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J. E. Williams, F. J. Nieto, C. P. Sanford, D. J. Couper, H. A. Tyroler, and A. Algra The Association Between Trait Anger and Incident Stroke Risk: The Atherosclerosis Risk in Communities (ARIC) Study * Editorial Comment: The Atherosclerosis Risk in Communities (ARIC) Study Stroke, January 1, 2002; 33(1): 13 - 20. [Abstract] [Full Text] [PDF]
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B. M. Curtis and J. H. O'Keefe Jr Autonomic Tone as a Cardiovascular Risk Factor: The Dangers of Chronic Fight or Flight Mayo Clin. Proc., January 1, 2002; 77(1): 45 - 54. [Abstract] [PDF]
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D. Lucini, G. Norbiato, M. Clerici, and M. Pagani Hemodynamic and Autonomic Adjustments to Real Life Stress Conditions in Humans Hypertension, January 1, 2002; 39(1): 184 - 188. [Abstract] [Full Text] [PDF]
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J. E. Williams, F. J. Nieto, C. P. Sanford, and H. A. Tyroler Effects of an Angry Temperament on Coronary Heart Disease Risk : The Atherosclerosis Risk in Communities Study Am. J. Epidemiol., August 1, 2001; 154(3): 230 - 235. [Abstract] [Full Text] [PDF]
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K. Tsuchihashi, K. Ueshima, T. Uchida, N. Oh-mura, K. Kimura, M. Owa, M. Yoshiyama, S. Miyazaki, K. Haze, H. Ogawa, et al. Transient left ventricular apical ballooning without coronary artery stenosis: a novel heart syndrome mimicking acute myocardial infarction J. Am. Coll. Cardiol., July 1, 2001; 38(1): 11 - 18. [Abstract] [Full Text] [PDF]
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M. A. Mittleman, R. A. Lewis, M. Maclure, J. B. Sherwood, and J. E. Muller Triggering Myocardial Infarction by Marijuana Circulation, June 12, 2001; 103(23): 2805 - 2809. [Abstract] [Full Text] [PDF]
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A. Peters, D. W. Dockery, J. E. Muller, and M. A. Mittleman Increased Particulate Air Pollution and the Triggering of Myocardial Infarction Circulation, June 12, 2001; 103(23): 2810 - 2815. [Abstract] [Full Text] [PDF]
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J. A. Kovach, B. D. Nearing, and R. L. Verrier Angerlike behavioral state potentiates myocardial ischemia-induced T-wave alternans in canines J. Am. Coll. Cardiol., May 1, 2001; 37(6): 1719 - 1725. [Abstract] [Full Text] [PDF]
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R. P. Sloan, E. Bagiella, P. A. Shapiro, J. P. Kuhl, D. Chernikhova, J. Berg, and M. M. Myers Hostility, Gender, and Cardiac Autonomic Control Psychosom Med, May 1, 2001; 63(3): 434 - 440. [Abstract] [Full Text] [PDF]
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D. R Witte, M. L Bots, A. W Hoes, and D. E Grobbee Cardiovascular mortality in Dutch men during 1996 European football championship: longitudinal population study BMJ, December 23, 2000; 321(7276): 1552 - 1554. [Abstract] [Full Text]
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K. Orth-Gomer, S. P. Wamala, M. Horsten, K. Schenck-Gustafsson, N. Schneiderman, and M. A. Mittleman Marital Stress Worsens Prognosis in Women With Coronary Heart Disease: The Stockholm Female Coronary Risk Study JAMA, December 20, 2000; 284(23): 3008 - 3014. [Abstract] [Full Text] [PDF]
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A. B. Araujo, C. B. Johannes, H. A. Feldman, C. A. Derby, and J. B. McKinlay Relation between Psychosocial Risk Factors and Incident Erectile Dysfunction: Prospective Results from the Massachusetts Male Aging Study Am. J. Epidemiol., September 15, 2000; 152(6): 533 - 541. [Abstract] [Full Text] [PDF]
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J. Denollet, J. Vaes, and D. L. Brutsaert Inadequate Response to Treatment in Coronary Heart Disease : Adverse Effects of Type D Personality and Younger Age on 5-Year Prognosis and Quality of Life Circulation, August 8, 2000; 102(6): 630 - 635. [Abstract] [Full Text] [PDF]
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J. L. Januzzi Jr, T. A. Stern, R. C. Pasternak, and R. W. DeSanctis The Influence of Anxiety and Depression on Outcomes of Patients With Coronary Artery Disease Arch Intern Med, July 10, 2000; 160(13): 1913 - 1921. [Full Text] [PDF]
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J. E. Williams, C. C. Paton, I. C. Siegler, M. L. Eigenbrodt, F. J. Nieto, and H. A. Tyroler Anger Proneness Predicts Coronary Heart Disease Risk : Prospective Analysis From the Atherosclerosis Risk In Communities (ARIC) Study Circulation, May 2, 2000; 101(17): 2034 - 2039. [Abstract] [Full Text] [PDF]
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D. S. Krantz, D. S. Sheps, R. M. Carney, and B. H. Natelson Effects of Mental Stress in Patients With Coronary Artery Disease: Evidence and Clinical Implications JAMA, April 12, 2000; 283(14): 1800 - 1802. [Full Text] [PDF]
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A. W. Siegman, S. T. Townsend, A. C. Civelek, and R. S. Blumenthal Antagonistic Behavior, Dominance, Hostility, and Coronary Heart Disease Psychosom Med, March 1, 2000; 62(2): 248 - 257. [Abstract] [Full Text] [PDF]
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H.-R Arntz, S.N Willich, C Schreiber, T Bruggemann, R Stern, and H.-P Schultheiss Diurnal, weekly and seasonal variation of sudden death. Population-based analysis of 24061 consecutive cases Eur. Heart J., February 2, 2000; 21(4): 315 - 320. [Abstract] [PDF]
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R. Lampert, D. Jain, M. M. Burg, W. P. Batsford, and C. A. McPherson Destabilizing Effects of Mental Stress on Ventricular Arrhythmias in Patients With Implantable Cardioverter-Defibrillators Circulation, January 18, 2000; 101(2): 158 - 164. [Abstract] [Full Text] [PDF]
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N. Christenfeld, L. M. Glynn, D. P. Phillips, and I. Shrira Exposure to New York City as a Risk Factor for Heart Attack Mortality Psychosom Med, November 1, 1999; 61(6): 740 - 743. [Abstract] [Full Text] [PDF]
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J. Moller, J. Hallqvist, F. Diderichsen, T. Theorell, C. Reuterwall, and A. Ahlbom Do Episodes of Anger Trigger Myocardial Infarction? A Case-Crossover Analysis in the Stockholm Heart Epidemiology Program (SHEEP) Psychosom Med, November 1, 1999; 61(6): 842 - 849. [Abstract] [Full Text] [PDF]
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A STEPTOE Psychosocial factors in the aetiology of coronary heart disease Heart, September 1, 1999; 82(3): 258 - 259. [Full Text] [PDF]
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R. B. Williams A 69-Year-Old Man With Anger and Angina JAMA, August 25, 1999; 282(8): 763 - 770. [Full Text] [PDF]
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G. Piccirillo, E. Viola, M. Nocco, E. Santagada, M. Durante, C. Bucca, and V. Marigliano Autonomic Modulation and QT Interval Dispersion in Hypertensive Subjects With Anxiety Hypertension, August 1, 1999; 34(2): 242 - 246. [Abstract] [Full Text] [PDF]
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J. E. J. Gallacher, J. W. G. Yarnell, P. M. Sweetnam, P. C. Elwood, and S. A. Stansfeld Anger and Incident Heart Disease in the Caerphilly Study Psychosom Med, July 1, 1999; 61(4): 446 - 453. [Abstract] [Full Text] [PDF]
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W. J. Kop Chronic and Acute Psychological Risk Factors for Clinical Manifestations of Coronary Artery Disease Psychosom Med, July 1, 1999; 61(4): 476 - 487. [Abstract] [Full Text] [PDF]
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M. A. Mittleman, D. Mintzer, M. Maclure, G. H. Tofler, J. B. Sherwood, and J. E. Muller Triggering of Myocardial Infarction by Cocaine Circulation, June 1, 1999; 99(21): 2737 - 2741. [Abstract] [Full Text] [PDF]
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P. H. Stone, D. S. Krantz, R. P. McMahon, A. D. Goldberg, L. C. Becker, B. R. Chaitman, H. A. Taylor, J. D. Cohen, K. E. Freedland, B. D. Bertolet, et al. Relationship among mental stress-induced ischemia and ischemia during daily life and during exercise: the Psychophysiologic Investigations of Myocardial Ischemia (PIMI) Study J. Am. Coll. Cardiol., May 1, 1999; 33(6): 1476 - 1484. [Abstract] [Full Text] [PDF]
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A. Rozanski, J. A. Blumenthal, and J. Kaplan Impact of Psychological Factors on the Pathogenesis of Cardiovascular Disease and Implications for Therapy Circulation, April 27, 1999; 99(16): 2192 - 2217. [Abstract] [Full Text] [PDF]
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S. A. Everson, G. A. Kaplan, D. E. Goldberg, T. A. Lakka, J. Sivenius, and J. T. Salonen Anger Expression and Incident Stroke : Prospective Evidence From the Kuopio Ischemic Heart Disease Study Stroke, March 1, 1999; 30(3): 523 - 528. [Abstract] [Full Text] [PDF]
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 S. N Willich Circadian variation and triggering of cardiovascular events Vascular Medicine, February 1, 1999; 4(1): 41 - 49. [Abstract] [PDF]
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J. D. Folts, A. I. Schafer, J. Loscalzo, J. T. Willerson, and J. E. Muller A perspective on the potential problems with aspirin as an antithrombotic agent: a comparison of studies in an animal model with clinical trials J. Am. Coll. Cardiol., February 1, 1999; 33(2): 295 - 303. [Abstract] [Full Text] [PDF]
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T. C. Andrews, J. D. Parker, S. Jacobs, R. Friedman, N. Cummings, G. MacCallum, F. Mannting, G. H. Tofler, W. Carlson, J. E. Muller, et al. Effects of therapy with nifedipine GITS or atenolol on mental stress-induced ischemic left ventricular dysfunction J. Am. Coll. Cardiol., November 15, 1998; 32(6): 1680 - 1686. [Abstract] [Full Text] [PDF]
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I. Kawachi, D. Sparrow, L. D. Kubzansky, A. Spiro, P. S. Vokonas, and S. T. Weiss Prospective Study of a Self-Report Type A Scale and Risk of Coronary Heart Disease : Test of the MMPI-2 Type A Scale Circulation, August 4, 1998; 98(5): 405 - 412. [Abstract] [Full Text]
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J. Denollet and D. L. Brutsaert Personality, Disease Severity, and the Risk of Long-term Cardiac Events in Patients With a Decreased Ejection Fraction After Myocardial Infarction Circulation, January 20, 1998; 97(2): 167 - 173. [Abstract] [Full Text] [PDF]
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 G. J. Ter Horst and F. Postema Forebrain parasympathetic control of heart activity: retrograde transneuronal viral labeling in rats Am J Physiol Heart Circ Physiol, December 1, 1997; 273(6): H2926 - H2930. [Abstract] [Full Text] [PDF]
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C. E. Lavery, M. A. Mittleman, M. C. Cohen, J. E. Muller, and R. L. Verrier Nonuniform Nighttime Distribution of Acute Cardiac Events : A Possible Effect of Sleep States Circulation, November 18, 1997; 96(10): 3321 - 3327. [Abstract] [Full Text]
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J. E. Muller, P. G. Kaufmann, R. V. Luepker, M. L. Weisfeldt, P. C. Deedwania, and J. T. Willerson Mechanisms Precipitating Acute Cardiac Events : Review and Recommendations of an NHLBI Workshop Circulation, November 4, 1997; 96(9): 3233 - 3239. [Full Text]
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J. A. Blumenthal, W. Jiang, M. A. Babyak, D. S. Krantz, D. J. Frid, R. E. Coleman, R. Waugh, M. Hanson, M. Appelbaum, C. O'Connor, et al. Stress Management and Exercise Training in Cardiac Patients With Myocardial Ischemia: Effects on Prognosis and Evaluation of Mechanisms Arch Intern Med, October 27, 1997; 157(19): 2213 - 2223. [Abstract] [PDF]
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H. R. Middlekauff, A. H. Nguyen, C. E. Negrao, E. U. Nitzsche, C. K. Hoh, B. A. Natterson, M. A. Hamilton, G. C. Fonarow, A. Hage, and J. D. Moriguchi Impact of Acute Mental Stress on Sympathetic Nerve Activity and Regional Blood Flow in Advanced Heart Failure : Implications for `Triggering' Adverse Cardiac Events Circulation, September 16, 1997; 96(6): 1835 - 1842. [Abstract] [Full Text]
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