Outcome of emergency percutaneous coronary intervention for acute ST-elevation myocardial infarction complicated by cardiac arrest.
BACKGROUND
The poor prognosis of primary percutaneous coronary intervention (PCI) in patients resuscitated from cardiac arrest complicating acute ST-segment elevation myocardial infarction (STEMI) may at least partly be explained by the common presence of cardiogenic shock. This study examined the impact of emergency primary PCI on outcome in patients with STEMI not complicated by cardiogenic shock who were resuscitated from cardiac arrest.


RESULTS
The study group included 948 consecutive patients without cardiogenic shock who underwent emergency primary PCI from 2001 to 2006 for STEMI. Twenty-one of them were resuscitated from cardiac arrest before the intervention. Data on background, clinical characteristics, and outcome were prospectively collected. There were no differences between the resuscitated and nonresuscitated patients in age, sex, infarct location, or left ventricular function. The total one-month mortality rate was higher in the resuscitated patients (14.3 vs. 3.4%, P=0.033), but noncardiac mortality accounted for the entire difference (14.3 vs. 1.2%, P=0.001), whereas cardiac mortality was similarly low in the two groups (0 vs. 2.0%, P=NS). Predictors of poor outcome in the resuscitated patients were older age (r=0.47, P=0.032), unwitnessed sudden death (r=0.44, P=0.04), longer interval between onset of cardiac arrest and arrival of a mobile unit (r=0.67, P=0.001) or to spontaneous circulation (r=0.65, P=0.001), low glomerular filtration rate (r=-0.50, P=0.02), and the initial thrombolysis in myocardial infarction grade of flow (r=-0.51, P=0.017).


CONCLUSIONS
Emergency PCI for STEMI not associated with cardiogenic shock exerts a similar effect on cardiac mortality in patients who were resuscitated from cardiac arrest and in those without this complication. The higher all-cause mortality rate among resuscitated patients is explained by noncardiac complications.
Mager
Aviv
A
Cardiac Catheterization Laboratories, Department of Cardiology, Rabin Medical Center, Petach Tikva, Israel. avivm@clalit.org.il
Kornowski
Ran
R
Murninkas
Daniel
D
Vaknin-Assa
Hana
H
Ukabi
Shimrit
S
Brosh
David
D
Battler
Alexander
A
Assali
Abid
A
D000367:Age Factors; D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000401:mortality; D016887:Cardiopulmonary Resuscitation / Q000401:mortality; D003326:Coronary Circulation; D004638:Emergency Treatment; D005260:Female; D005919:Glomerular Filtration Rate; D006323:Heart Arrest / Q000209:etiology / Q000401:mortality / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications / Q000401:mortality / Q000503:physiopathology / Q000628:therapy*; D011446:Prospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome