Recent advances in the diagnosis and treatment of acute myocardial infarction

Table 2 Electrocardiogram manifestations of acute myocardial ischemia (in absence of left ventricular hypertrophy and left bundle branch block)

ST elevation

New ST elevation at the J point in two contiguous leads with the cut-points:

≥ 0.1 mV in all leads other than leads V2–V3 where the following cut points apply: ≥ 0.2 mV in men ≥ 40 yr; ≥ 0.25 mV in men < 40 yr, or ≥ 0.15 mV in women

ST depression and T wave changes

New horizontal or down-sloping ST depression ≥ 0.05 mV in two contiguous

leads and/or T inversion ≥ 0.1 mV in two contiguous leads with prominent R wave or R/S ratio > 1