Table 4

Patients with myocardial infarction and non-diagnostic ECGs at the time of presentation (0–24 h)

Time from pain onsetNumber of patientsInitial ECGRaised troponin TRaised myoglobinRaised total CKCKMB activityCKMB mass
*n = indicates where the number of patients with a result available is fewer than the number of patients in that group. C = ST depression, T wave inversion or ST elevation insufficient to be diagnostic. N = normal.
≤2 h44=C10010
>2≤4 h44=C13002
>4≤6 h21=N00001
>6≤24 h44=C43433 *n=3