In a series of 131 consecutive patients with unstable angina presentin
g to the emergency department, 27 (21%) had elevated levels of serum c
ardiac troponin T. During a 3-week follow-up period, 8 of these patien
ts (30%) had a myocardial infarction, 17 (63%) underwent coronary reva
scularization, and 5 (19%) had refractory angina; thus, major complica
tions occurred significantly more often in patients with elevated trop
onin T levels on admission, indicating that this test is of prognostic
value.