Ischemia · Critical
Anterior STEMI
● Live · lead II25 mm/s · 10 mm/mV
V3
10-second rhythm strip · count the boxes
RateVariable
RegularityUsually regular
P wavesNormal
PR intervalNormal
QRSQ waves may develop in V1–V4
Key features
- ST elevation in V1–V4 (septal + anterior)
- Reciprocal ST depression in II, III, aVF
- STE ≥ 2 mm (men ≥ 40 y) / ≥ 1.5 mm (women) in V2–V3 meets criteria