(Circulation. 1995;91:2733-2741.)
© 1995 American Heart Association, Inc.
Articles |
Long-term Outcome of Transient, Uncomplicated In-Laboratory Coronary Artery Closure
From the Department of Cardiology, The Cleveland Clinic Foundation, Cleveland, Ohio.
Correspondence to Eric J. Topol, MD, Department of Cardiology, The Cleveland Clinic Foundation, Desk F-25, 9500 Euclid Ave, Cleveland, OH 44195.
Background Successful reversal of abrupt vessel closure without resultant major ischemic complications (death, Q-wave myocardial infarction, or coronary artery bypass graft surgery) is achieved in nearly half of all cases of abrupt vessel closure. The long-term outcome of these patients has not been previously addressed, and it is not clear whether they have a different prognosis than that of patients who have a successful procedure not associated with transient vessel closure.
Methods and Results We examined 4863 consecutive patients who underwent successful percutaneous transluminal coronary angioplasty (PTCA) or directional coronary atherectomy (DCA). Eighty-eight patients had an uncomplicated, successfully reversed transient in-laboratory vessel closure (group 2) and were compared with 4775 patients who had a successful procedure not associated with transient in-laboratory closure (group 1). Clinical follow-up was available in 4839 patients (99.5%), with a mean duration of 41±23 months (range, 1 to 104 months). Survival analysis showed that successfully treated, uncomplicated transient vessel closure per se does not have an adverse effect on long-term prognosis (death, myocardial infarction, or coronary interventions). However, when the procedure (PTCA or DCA) was associated with an increase in creatine kinase–MB (CK-MB), there was a significant adverse effect on long-term outcome. By multivariate logistic regression, an increase in postprocedure CK-MB was the most significant correlate for cardiac death (risk ratio, 1.25; P<.0001). An increase in CK-MB was also the most important correlate for major ischemic complications (death, infarction, or coronary interventions) on follow-up (risk ratio, 1.08; P=.0005).
Conclusions Transient, uncomplicated in-laboratory vessel closure per se does not have an adverse long-term effect. However, a concomitant elevation of postprocedure cardiac enzymes has an important and significant adverse effect on long-term outcome. This study suggests that periprocedural creatine kinase isoenzyme determination in patients experiencing in-laboratory coronary closure has important prognostic implications.
Key Words: angioplasty • arteries • vessels • morbidity • mortality
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