Table 1.

Definition of the three forms of acute coronary syndromes (ACS).

STEMI NSTEMI Unstable angina
ACS symptoms + + +
ECG ST-elevation or new LBBB with or without ST-depression with or without ST-depression
Troponin (usually still) negative positive negative
Myocardial infarction yes (based on ST-elevation) yes (based on troponin) no

STEMI, ST-segment elevation myocardial infarction; NSTEMI, non-ST-elevation myocardial infarction; LBBB, left bundle branch block.

RMMJ Rambam Maimonides Medical Journal Rambam Health Care Campus 2011 July; 2(3): e0056. ISSN: 2076-9172
Published online 2011 July 31. doi: 10.5041/RMMJ.10056.