(Circulation. 1997;96:1761-1769.)
© 1997 American Heart Association, Inc.
Articles |
From the NHLBI, Bethesda, Md; the Graduate School of Public Health, University of Pittsburgh (Pa); and the BARI Investigative Sites.
Correspondence to Robert L. Frye, MD, University of Pittsburgh, 127 Parran Hall, 130 DeSoto St, Pittsburgh, PA 15261.
| Abstract |
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Methods and Results Eighteen clinical centers randomly assigned 1829 patients with multivessel coronary disease to undergo initial CABG or PTCA. Patients were followed an average of 5.4 years. TDM was defined as a history of diabetes with use of oral hypoglycemic agents or insulin at study entry. Nineteen percent of the randomized population (353 patients) met these criteria. TDM patients had more unfavorable baseline characteristics than other patients, but among TDM patients, these characteristics were similar between the CABG and PTCA groups. Better average 5.4-year survival with CABG was due to reduced cardiac mortality (5.8% versus 20.6%, P=.0003), which was confined to those receiving at least one internal mammary artery graft.
Conclusions Patients with TDM assigned to an initial strategy of CABG have a striking reduction in cardiac mortality compared with PTCA. Long-term internal mammary artery graft patency may contribute to this improved outcome by reducing the fatality of follow-up myocardial infarction.
Key Words: angioplasty bypass coronary disease diabetes mellitus trials
| Introduction |
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In 1987, the NHLBI initiated the BARI, a randomized trial to compare the efficacy of CABG and PTCA in patients with multivessel disease.16 17 18 19 20 The primary hypothesis was that an initial revascularization strategy of PTCA did not compromise clinical outcome over a 5-year period compared with an initial strategy of CABG. BARI recently reported no significant difference in survival over a 5-year period between the two strategies.21 Four baseline patient characteristics (clinical presentation, number of coronary vessels diseased, left ventricular function, and American College of Cardiology/American Heart Association lesion type) were prespecified for subgroup analysis. On the basis of findings of an earlier trial,22 the Safety and Data Monitoring Board recommended that diabetes also be monitored. Among patients with TDM, defined as diabetes mellitus treated with oral hypoglycemic agents or insulin at study entry, all-cause mortality was significantly lower in those assigned to CABG than in those assigned to PTCA (19% versus 35%, P=.003).21 The present report extends this comparison to cause-specific mortality and examines CABG efficacy by use of IMA grafts versus SVGs only.
| Methods |
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Cause of Death
Cause of death was classified by an independent Mortality and
Morbidity Classification Committee as cardiac, noncardiac but related
to atherosclerotic disease, other noncardiac medical causes (eg,
cancer, pulmonary disease), trauma, suicide, and other or
unknown causes.16 Cardiac death was defined as death <1
hour after onset of cardiac symptoms, within 30 days after documented
or probable MI, or due to intractable CHF, cardiogenic shock, or other
documented cardiac causes. A cardiac cause was defined as contributory
when cardiac malfunction was involved but other direct causes of death
could not be ruled out (eg, chronic CHF with pulmonary
embolism). Documents used for classification included death
certificate; coroner's report if available; report from the clinical
center's principal investigator; surgical and
catheterization laboratory reports if death occurred
within 30 days of a procedure; ECG and enzyme data if measured within
24 hours of death; and the patient's baseline, procedure, and hospital
study data. Each case was reviewed independently by two committee
members, with disagreements resolved by full committee consensus.
Myocardial Infarction
Q-wave MI was determined by central laboratory analysis
of ECGs requiring a two-step worsening of the Minnesota Q-wave
code23 24 or a new left bundle-branch block associated
with a twofold increase in total creatine phosphokinase with a positive
MB fraction. NonQ-wave MI was diagnosed when cardiac enzymes were
elevated with chest pain for >20 minutes or with the appearance of new
ECG changes. Cardiac enzymes were not used to define an MI within 96
hours after coronary revascularization.
Initial Revascularization Procedures
Left ventricular and coronary arteriographic
findings were analyzed by a central laboratory using a
quantitative arteriographic coding system.25 A successful
dilatation was defined as (1) reduction in luminal diameter narrowing
of
20%, (2) final lumen diameter narrowing of <50%, and (3) TIMI
grade 3 flow. The details of surgical
revascularization were collected prospectively.
Statistical Methods
Patient group differences were evaluated with the
2 test (or Fisher's exact test) for categorical
data and the Wilcoxon test for continuous or count data. Crude
cause-specific mortality rates for an average 5.4 years of follow-up
were computed as a percentage of the number of patients at baseline.
The Kaplan-Meier estimate26 was used to calculate cardiac
survival (freedom from cardiac mortality) under the assumption that
censoring for incomplete follow-up or noncardiac death was
noninformative. The log-rank statistic, stratified according to
clinical center, was used to compare cardiac survival curves between
treatment groups. A Cox regression model27 was used to
compare cardiac mortality rates, adjusted for baseline differences, in
patients with TDM after PTCA, after CABG with an IMA graft, and after
all other CABG procedures (SVG only). In the Cox model, baseline
differences between the three treatment groups were summarized by a
score that estimated each patient's likelihood of receiving an IMA
graft. The score function was obtained from a logistic regression model
using symptomatic and ischemic status, race, sex,
age
65 years, right-dominant coronary artery system, four or
more significant lesions, significant lesion in the left anterior
descending coronary artery, CHF, and body mass index to predict
which CABG patients received an IMA graft. To assess the influence of
MI on mortality, cardiac mortality rates were computed for patients
with a diagnosed MI and for those without a diagnosed MI in each of
three groups (PTCA, CABG with IMA, and CABG with SVG only).
| Results |
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Baseline Characteristics
BARI patients with and without TDM differed substantially (Table 1
). Patients with TDM were more often
women and blacks and had a lower formal educational level than other
patients. A higher proportion of those with TDM had a history of CHF,
hypertension, chronic renal failure, and peripheral
vascular disease. In addition, TDM patients had higher
triglyceride levels and body mass indexes. The severity of
angina at the time of randomization was similar, but TDM patients were
more likely to report an inactive lifestyle and a lower quality of
life. The extent of coronary disease was also greater in the
TDM group, as reflected by the presence of three-vessel disease and
more distal lesions. Left ventricular ejection fraction was
lower among treated diabetics.
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Among TDM patients, baseline characteristics were equally distributed between treatment arms, with the exception that PTCA patients had higher mean LDL cholesterol.
Initial Revascularization Procedure
Table 2
presents
characteristics of the initial intervention for patients receiving
their assigned treatment. For patients assigned to CABG with and
without TDM, 96% and 98%, respectively, received their assigned
procedures. TDM patients had a higher mean number of significant
lesions and distal sites and a lower proportion with all intended
vessels grafted. IMA grafting, whose use (81% to 82% of all CABGs)
did not differ by TDM status, was usually performed in conjunction with
SVGs. There was a greater use of sequential grafts in the TDM
patients.
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For patients assigned to PTCA, 98% with TDM and 95% without TDM underwent their assigned procedure. TDM patients had more significant stenoses and more distal lesions but a similar number of attempted lesions (2.4 versus 2.3). Among significant attempted lesions, TDM patients had a lower mean reference diameter before and after PTCA, as well as lower mean minimum lumen diameter after PTCA (P<.01 for each comparison).
In-Hospital Events
Within each treatment arm, in-hospital event rates were similar
among patients with and without TDM (Table 3
). Among those with TDM, the in-hospital
mortality was 1.2% for CABG and 0.6% for PTCA, and the incidence of
Q-wave MI was threefold greater after CABG compared with PTCA. Among
the TDM patients receiving PTCA, 7.1% required emergency CABG and
2.9% underwent nonemergency CABG during the initial hospitalization,
and 2.4% required emergency PTCA. Other minor complications were
similar between the CABG and PTCA groups.
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All-Cause Mortality During Follow-up
The 5-year survival of TDM patients was significantly worse than
for other patients (73.1% versus 91.3%, P<.0001 for the
log-rank test). For the 94 patients with untreated diabetes at
baseline, the 5-year survival was 93.3% compared with 91.1% for the
1382 patients without a history of diabetes. When the patients with TDM
were analyzed by treatment assignment, the cumulative survival
rates were significantly higher for patients assigned to CABG on the
basis of a stringent prespecified .005 level of significance (80.6 for
CABG, 65.5 for PTCA, P=.003 for the log-rank test). This
treatment difference did not vary significantly by clinical centers
(P=.90).
Cause-Specific Mortality
Cause-specific mortality after an average of 5.4 years of
follow-up is shown in Table 4
for
patients who underwent their assigned
revascularization procedure. Cardiac mortality
rates were 20.6% and 5.8% for PTCA and CABG, respectively, among
patients with TDM, compared with 4.8% and 4.7%, respectively, for
other BARI patients. Rates of noncardiac death related to
atherosclerosis and of death attributed to other
medical causes, while considerably higher for patients with TDM, were
comparable by assigned treatment within both TDM and non-TDM patients.
Thus, among patients with TDM, the excess mortality observed in the
PTCA group in comparison with the CABG group was cardiac and not due to
other causes (P<.01 by Fisher's exact test). As seen in
the Figure
, the cardiac survival curves
between TDM and non-TDM patients diverge steadily beginning in the
first year of follow-up, as do the survival curves within the TDM group
by assigned treatment.
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Impact of IMA Use on Cardiac Events
The relation of the presence of an IMA graft to cardiac mortality
was particularly striking (Table 5
).
Cardiac mortality with TDM was 2.9% when at least one IMA was used and
18.2% when only SVG conduits were used. The latter rate was similar to
that of patients receiving PTCA (20.6%). Because patients were not
assigned at random to use of IMA graft, this survival advantage could
potentially be due to factors related to patient suitability for IMA
grafts rather than the conduit itself. However, after adjustment for
the selection factors (likelihood of receiving IMA grafts), cardiac
mortality in TDM patients not treated with IMA grafts remained
excessive, with an 8.1 risk ratio for cardiac death with PTCA and a 7.4
risk ratio for SVG alone compared with patients receiving at least one
IMA graft (P<.005 for each comparison). Among patients
without TDM, cardiac mortality rates were similar across the three
treatment groups.
|
Postrandomization MI rates were also analyzed among TDM
patients. Although the cardiac death rate in those receiving IMA grafts
was substantially reduced compared with the other two groups,
postrandomization MI rates were comparable for all three groups.
However, when cardiac mortality and MI are cross-classified in the
final two columns of Table 5
, however, it is apparent that IMA use in
diabetic patients was associated with sharply decreased cardiac
mortality with or without MI.
Patients without TDM had nearly identical cardiac mortality and MI rates regardless of treatment or conduit. However, IMA use was once again associated with lower post-MI cardiac mortality. This finding in both nondiabetics and TDM patients suggests that an IMA graft protected patients from high cardiac mortality when an intervening MI was sustained. In the large majority of patients without TDM and without intercurrent MI, cardiac mortality was remarkably similar between CABG and PTCA.
| Discussion |
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The hazards of subgroup analysis without a priori defined hypotheses and sufficient sample size to achieve the desired power are well recognized, as is the influence of multiple analyses of the data. We established wide, 99.5% CIs for within-subgroup treatment comparisons, corresponding to a stringent .005 level of significance. Additional support for our findings comes from a recent report from another large multicenter randomized trial, the Coronary Angioplasty versus Bypass Revascularization Investigation (CABRI).28 In contrast, the Emory Angioplasty versus Surgery Trial (EAST) failed to show a survival advantage for CABG.29 The survival rate in the small group of diabetic patients in that study, however, was uncharacteristically similar to the nondiabetic patients.
Investigation of cause-specific mortality rates was critical to our understanding of the significant mortality difference observed between treatment groups in TDM patients. Cardiac mortality was more than three times higher in TDM patients initially revascularized with PTCA, whereas other cause-specific noncardiac death rates, although higher in TDM patients, remained remarkably similar by treatment group. Although patients with TDM are known to have a significantly higher incidence of restenosis and progression of coronary artery disease,1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 we hypothesize that PTCA, rather than leading to increased mortality, may simply fail to alter the natural clinical course in TDM patients with coronary artery disease.
The survival benefit of CABG was limited to use of IMA grafts, and it was particularly striking after postrandomization MI in patients with and without TDM. Although postrandomization MI rates were comparable by assigned treatment and conduit type, the subsequent cardiac mortality was lowest with the placement of IMA grafts. This observation was similar to the substantially lower postinfarction mortality rates reported by Peduzzi et al30 and Alderman31 in the VA study for patients initially randomized to CABG instead of medical treatment. We hypothesize that IMA grafts, being less susceptible to disease progression (accelerated in TDM), may provide better alternative sources of perfusion to maintain ventricular function in regions of hypoperfusion resulting from coronary occlusion.
It is well documented that diabetic patients have a greater incidence of mortality post-MI than nondiabetic patients.32 33 34 35 36 37 38 Among diabetic patients, MIs can more often be painless or atypical, manifesting and diagnosed as sudden CHF, cardiac shock, arrhythmia, or sudden death.39 40 Several basic mechanisms might explain the increased mortality of acute MI in diabetics. The benefits of preconditioning of the myocardium may be inhibited by the influence of hypoglycemic drugs that inhibit the ATPase-sensitive potassium channels.41 A hyperpolarizing mechanism present in endothelial cells of normal arteries may be impaired in diabetics, which may compromise endothelial cell function.42 Insulin resistance may contribute to abnormalities in coronary flow.43 Microvascular abnormalities may lead to myocardial ischemia in diabetics even without epicardial coronary artery disease.44 A higher incidence of silent ischemia, plaque disruption, and thrombosis in diabetic patients may help explain the increased rate of acute coronary syndromes and MI observed in diabetics.35 36 37 38 39 40 41 42 43 44 45 Diabetics have a higher incidence of lipid abnormalities and hypertension, which further increases their risk for coronary artery disease.1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
The results of two recent prospective studies have clearly documented the importance of glycemic control in reducing cardiovascular mortality and morbidity in diabetics.46 47 One-year mortality was also reduced in a randomized trial of diabetics with aggressive insulin and glucose therapy early after MI.48 It has been estimated that in diabetic men, aggressive medical therapy and risk factor modification could reduce mortality from coronary artery disease, which is between three and five times greater than among nondiabetics.49 The importance of control of diabetes cannot be overemphasized.
Limitations and Clinical Implications of the Study
The number of BARI patients with TDM was relatively small (353),
although larger than in other recently reported trials comparing CABG
and PTCA.28 29 Because diabetes was not the original focus
of the BARI trial, we collected no detailed information as to the type,
degree, and duration of diabetes. The BARI diabetic classification,
also used in the diabetes substudy of the MRFIT trial and the Joslin
Clinic follow-up study,6 32 was based on patient history,
strengthened by the objective evidence of insulin or oral hypoglycemic
use. Because BARI was not specifically designed to evaluate TDM, the
adequacy of glucose control is unknown, and differential adherence to
medical therapy cannot be ruled out.
The results for diabetic patients in BARI do not necessarily apply to all patients with diabetes. Treated diabetics in the BARI Registry who refused randomization were selected for treatment with PTCA without apparent compromise in survival compared with CABG.50 These patients, however, do not share the adverse baseline characteristics of those in the randomized trial. This observation suggests that in certain diabetic patients, angioplasty may be a suitable alternative to bypass surgery. In addition, we did not enroll patients with single-vessel disease, and use of the IMA graft was left to the discretion of the operator rather than assigned at random. Interpretation of BARI results must also take into account the fact that the initial procedure was standard balloon angioplasty. The impact on outcomes among treated diabetics is not known for the new revascularization technologies, including the frequent use of stents.51 52 53
The clinical implications of our observations are several. Among TDM patients with the characteristics of those randomized in BARI, CABG with IMA grafts appears to be the preferred initial treatment strategy. However, if only SVGs are used, cardiac mortality is similar to that with PTCA. The advances in catheter-based techniques, surgery, and medical therapy call for further properly controlled randomized clinical trials to determine the best treatment strategy for patients with diabetes mellitus.
| Selected Abbreviations and Acronyms |
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| Acknowledgments |
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| Footnotes |
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| Appendix 1 |
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Participants in the BARI Trial
University of Alabama
Principal Investigator: W.J. Rogers. W.A. Baxley, L.S. Dean, G.S. Roubin, J.K. Kirklin, J.W. Kirklin, A. Pacifico, G.L. Zorn, E. Charles, T.D. Paine, S. Brewer, L.C. Carr, G. Duke, L.E. Maske, T.E. Morgan, K. Doss, J.A. Trobaugh, K.W. Anderson, M. Brunner-Scott, D. Bunn, F. Harris. Former participants: T. Bulle, J.B. Cavender, P.J. Garrahy.
Brown University: Rhode Island Hospital
Principal Investigator: D.O. Williams. T.M. Drew, A.K. Singh, G.N. Cooper, B.L. Sharaf, J.L. Wheeler. Former participants: M.E. Grogan, M. Macedo, J. Moran, E.S. Thomas, H. White.
Bellevue Hospital (Satellite to Brown)
Principal Investigators: F. Feit, M.J. Attubato. S.B. Colvin, A.C. Galloway, G. Ribakove, P.F. Pasternack, M. Rey, S. Shapiro.
Boston University
Principal Investigators: A.K. Jacobs, D.P. Faxon. G.R. Garber, N.A. Ruocco, R.S. Shemin, G.S. Aldea, T.J. Ryan, D.A. Weiner, B.R. Hankin, M.E. Mazur. Former participants: J.W. Currier, R.M. Mills, G. Paone, J.E. Brush, J.D. Fonger, M.A. Bettmann, J.A. Rothendler.
Cleveland Clinic Foundation
Principal Investigator: P.L. Whitlow. S. Ellis, I. Franco, R. Raymond, E. Topol, D. Cosgrove, F. Loop, B. Lytle, R. Stewart, P.C. Taylor, A.P. Dimas, A.M. Lincoff, W. Proudfit, G. Williams, M. Lowrie, K. Comella. Former participants: J. Frierson, F. Grigera, B. Healy, J. Hollman, L. Korcuska, B. Robalino, A. Rogers, S. Senick, J. Tedrick, K. Vaska.
Duke University
Principal Investigator: R.M. Califf. R.P. Bauman, V.S. Behar, Y. Kong, M.W. Krucoff, K.G. Morris, R.H. Peter, H.R. Phillips, R. Stack, J.E. Tcheng, R.H. Jones, H.N. Oldham, P. Van Tright, W.A. Baker, T. Bashore, D.F. Fortin, K. Lee, E.M. Ohman, L.A. Drew, M.A. Sellers, V.C. Bass. Former participants: B. Bacon, S.G. Burks, S. Caminiti, T. Daniels, D.J. Frid, H. Gessner, E. Hampton, M.J. Miller, D.B. Pryor, P.J. Quigley, J.S. Rankin, J. Richard, L. Santoro, A. N. Tenaglia.
Harvard University: Beth Israel Hospital
Principal Investigator: D. S. Baim. J. Aroesty, B. Lorell, R. Johnson, R. Thurer, R. Weintraub, M. Flatley. Former participants: M. Cunnion, T. DeFeo-Fraulini, D. Diver, R. McKay, C. McCabe, K. Miller, R. Safian, A. Slater.
Maine Medical Center (Satellite to Harvard)
Principal Investigator: M.A. Kellett Jr. W.D. Alpern, R.A. Anderson, D.J. Cutler, P.W. Sweeney, D.J. Donegan, S. Katz, R.S. Kramer, C.A. Lutes, J.R. Morton, E.R. Nowicki, J.F. Tryzelaar, R.L. White, C.T. Lambrew, S. Bosworth-Farrell, J.C. Kane, N. Tooker.
University of Massachusetts
Principal Investigator: B.H. Weiner. J. Moran, O.N. Okike, A. Pezzella, T.J. VanderSalm, M. Borbone, K. Quist. Former participants: J. Benotti, D. Bitran, J. Dalen, J. Gaca, J. Leppo, M. Pasque, M. Shay, P. Wanta, T. Wisnewski.
Mayo Clinic
Principal Investigator: M. Mock. J. Bresnahan, D. Holmes, G.S. Reeder, C. Mullany, T.A. Orszulak, H. Schaff, P.B. Berger, R. Gibbons, S.L. Kopecky, R.S. Schwartz, H.C. Smith, S. Matheson, L. Kelly, L.A. Pierre. Former participants: D. Bresnahan, B. Gersh, F. Nobrega, M. Peterson, R. Vlietstra.
Medical College of Virginia
Principal Investigator: M.J. Cowley. G. Vetrovec, A. Guerraty, D. Salter, A. Wechsler, K. Kelly Hall. Former participants: C.W. Crandall, D. DeBottis, G. DiSciascio, R.R. Lower, A. Maziarz, A. Nath, B. Sechrist, S. Szentpetery.
University of Michigan
Principal Investigator: B. Pitt. E. Bates, D. Muller, S. Bolling, M. Deeb, M. Kirsh, M.M. Stock, J. Corbett, P. Fox, T. Johnson, K. McNeely, S. Pitt. Former participants: L. Belzowski, D. Bondie, K. Burek, S. Ellis, L. Lee, D. Scarpace, M. Schwaiger, H. Shu, M. Stirling, P. Thomasma, E.J. Topol, J. Walton, S. Werns.
Montreal Heart Institute
Principal Investigator: M.G. Bourassa. R. Bonan, G. Cote, J. Crepeau, P. DeGuise, Y. Leclerc, C. Pelletier, J. Gregoire, G. Hudon, J. Lesperance, J. Trudel, C. Faille. Former participants: A. Arseneault, Y. Castonguay, H. Flageol, D.D. Waters, L. Whittom.
Toronto Hospital (Satellite to Montreal)
Principal Investigator: L. Schwartz. H. Aldridge, D. Uden, T. David, C. Feindel, B. Goldman, I. Lipton, L. Mickleborough, R. Weisel, D. Almond, C. Lazzam, M. McLoughlin, L. Zelovitsky, P. Liu, L. Lazzam, K. Mackie.
New York Medical College
Principal Investigator: M.B. Weiss. R. Moggio, R. Pooley, G. Reed, M. Sarabu, R. Steinberg. Former participants: D. Efstathakis, P. Praeger, M.V. Herman, K. Ryman, Y. Sait, E. Somberg, J.H. Stein.
St Louis University
Principal Investigator: B.R. Chaitman. F.V. Aguirre, M.J. Kern, G. Kaiser, V. Willman, R. Wiens, C. Huffman, T. Stonner, S. Aubuchon, M. Kramer. Former participants: H. Barner, U. Deligonul, J.Fehl, K. Galan, B. Poole, M.G. Vandormael.
Jewish Hospital (Satellite to St Louis)
Principal Investigators: R.J. Krone, N. Kouchoukos. A. Salimi, T.H. Wareing, P. Cole, K. Fischer, R. Kleiger, S. Kovacs, M. Rich, A. Shah, J. Humphrey, C. Benson, D. Bowen, G. Eisenkramer, T. Jones, E. Kelly, L. Kendricks, J. Moore, P. Rice, R. Umstead, J. Waldschmidt, B. Walker, J. Weaver. Former participants: M. Caruso, L. Coulter, L. Spinner.
Parallel Study
Institute of Clinical and Experimental Medicine, Prague, Czech Republic
Principal Investigator: V. Stan
k. A. Belán, J.
Ková
, P. Firt, J. Pirk, V. Ko
andrle, M.
elízko, R. Jandová, E. Tchernoster.
Former Site
Georgetown University
Principal Investigator: K. Kent. N.M. Katz, R. Wallace, L. Elliott, C. Green, J. Lavelle, C. Rackely, K. Kelly Hall. Former participant: B. Shriver.
Central ECG and Myocardial Infarction Classification Laboratory
St Louis University Medical Center
Principal Investigator: B.R. Chaitman. P. Bjerregaard, I. Gussak, R.D. Wiens, L.T. Younis, K. Stocke, K. Russell, S. Cannon, C. Homeyer, M. Miller. Former participants: D. Kargl, L. Maitus, L. Shaw, B. Takase, A. Terry, S. Zhou.
Central Radiographic Laboratory
Stanford University Medical Center
Principal Investigator: E.L. Alderman. B. Brown, W. Sanders, L. Wexler, B. Hollak. Former participants: T. Beam, R. Moore, G. Shao-Zhou, M. Stadius.
Ancillary Study
Study of Economics and Quality of Life
Stanford University School of Medicine (SEQOL)
Principal Investigator: M. Hlatky. C. Winston, D. Boothroyd, I. Johnstone. Former participants: C. Bacon, K. Cavanaugh, N. Clapp-Channing.
Coordinating Center
University of Pittsburgh (Pa)
Principal Investigators: K.M. Detre, S.F. Kelsey. K. Sutton-Tyrrell, A.D. Rosen, S.W. Crow, K.H. Andrews, M.M. Brooks, R.M. Hardison, G.F. Harger, R. Holubkov, A.E. Siewers, J.P. Martin, J. Greenhouse, A. Sampson, C. Ravotti. Former participants: W.P. Amoroso, L.M. Anderson, H.X. Barnhart, D. Borrebach, J.E. Bost, D.W. Burry, M.A. Carr, M. Cooper, R.L. Hardesty, D.F. Hursh, L. Kamons, J.F. Killinger, T.E. Kuntz, E.A. Maurer, J.E. Melvin, J.A. Metzler, B.L. Naydeck, N.H. Remaley, A. Spadaro, A.R. Steenkiste, B.F. Uretsky, J. Wilson.
Program Office
Cardiac Diseases Branch, Division of Heart and Vascular Diseases, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Md
Program Administrator: G. Sopko. D. Follmann, M. Horan. Former participants: M.J. Domanski, L. Offen, T. Robertson, R. Solomon, J. Verter, D. Zucker.
Safety and Data Monitoring Board
Chair: J.D. Bristow. J. Childress, T. Gardner, C. Grines, J.W. Kennedy, G. Knatterud, J. Waldhausen, C. White. Former participants: H. Gold, R. Roberts.
Morbidity and Mortality Classification Committee
Chair: R. Prineas. C. Fisch, H.L. Greene, R.B. Karp, S.B. King III, J. Mason, J.L. Titus.
Office of Study Chair
Mayo Clinic Foundation, Rochester, Minn
R.L. Frye, MD
Received February 3, 1997; revision received May 5, 1997; accepted May 15, 1997.
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D. M. Bravata, A. L. Gienger, K. M. McDonald, V. Sundaram, M. V. Perez, R. Varghese, J. R. Kapoor, R. Ardehali, D. K. Owens, and M. A. Hlatky Systematic Review: The Comparative Effectiveness of Percutaneous Coronary Interventions and Coronary Artery Bypass Graft Surgery Ann Intern Med, November 20, 2007; 147(10): 703 - 716. [Abstract] [Full Text] [PDF] |
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C.-C. Fang, Yeun Tarl Fresner Ng Jao, Yi-Chen, C.-L. Yu, C.-L. Chen, and S.-P. Wang Angiographic and Clinical Outcomes of Rosiglitazone in Patients With Type 2 Diabetes Mellitus After Percutaneous Coronary Interventions: A Single Center Experience Angiology, November 1, 2007; 58(5): 523 - 534. [Abstract] [PDF] |
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A. Avignon, A. Sultan, C. Piot, D. Mariano-Goulart, J.-F. Thuan dit Dieudonne, J. P. Cristol, and A. M. Dupuy Osteoprotegerin: A Novel Independent Marker for Silent Myocardial Ischemia in Asymptomatic Diabetic Patients Diabetes Care, November 1, 2007; 30(11): 2934 - 2939. [Abstract] [Full Text] [PDF] |
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A. Javaid, D. H. Steinberg, A. N. Buch, P. J. Corso, S. W. Boyce, T. L. Pinto Slottow, P. K. Roy, P. Hill, T. Okabe, R. Torguson, et al. Outcomes of Coronary Artery Bypass Grafting Versus Percutaneous Coronary Intervention With Drug-Eluting Stents for Patients With Multivessel Coronary Artery Disease Circulation, September 11, 2007; 116(11_suppl): I-200 - I-206. [Abstract] [Full Text] [PDF] |
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J. L. Anderson, C. D. Adams, E. M. Antman, C. R. Bridges, R. M. Califf, D. E. Casey Jr, W. E. Chavey II, F. M. Fesmire, J. S. Hochman, T. N. Levin, et al. ACC/AHA 2007 Guidelines for the Management of Patients With Unstable Angina/Non-ST-Elevation Myocardial Infarction: A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the 2002 Guidelines for the Management of Patients With Unstable Angina/Non-ST-Elevation Myocardial Infarction) Developed in Collaboration with the American College of Emergency Physicians, the Society for Cardiovascular Angiography and Interventions, and the Society of Thoracic Surgeons Endorsed by the American Association of Cardiovascular and Pulmonary Rehabilitation and the Society for Academic Emergency Medicine J. Am. Coll. Cardiol., August 14, 2007; 50(7): e1 - e157. [Full Text] [PDF] |
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J. L. Anderson, C. D. Adams, E. M. Antman, C. R. Bridges, R. M. Califf, D. E. Casey Jr, W. E. Chavey II, F. M. Fesmire, J. S. Hochman, T. N. Levin, et al. ACC/AHA 2007 Guidelines for the Management of Patients With Unstable Angina/Non ST-Elevation Myocardial Infarction Executive Summary: A Report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Writing Committee to Revise the 2002 Guidelines for the Management of Patients With Unstable Angina/Non ST-Elevation Myocardial Infarction) Developed in Collaboration with the American College of Emergency Physicians, the Society for Cardiovascular Angiography and Interventions, and the Society of Thoracic Surgeons Endorsed by the American Association of Cardiovascular and Pulmonary Rehabilitation and the Society for Academic Emergency Medicine J. Am. Coll. Cardiol., August 14, 2007; 50(7): 652 - 726. [Full Text] [PDF] |
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P. Jimenez-Quevedo, M. Sabate, D. J. Angiolillo, F. Alfonso, R. Hernandez-Antolin, M. SanMartin, J. A. Gomez-Hospital, C. Banuelos, J. Escaned, R. Moreno, et al. Long-term clinical benefit of sirolimus-eluting stent implantation in diabetic patients with de novo coronary stenoses: long-term results of the DIABETES trial Eur. Heart J., August 2, 2007; 28(16): 1946 - 1952. [Abstract] [Full Text] [PDF] |
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