Information ⬇
- Right atrium: P wave ≥2.5 mm in lead II.
- Left atrium: P biphasic (positive, then negative) in V1, with terminal negative force wider than 0.04 s.
- Right ventricle: R > S in V1 and R in V1 > 5 mm; deep S in V6; right-axis deviation (Fig. 111-3).
- Left ventricle: S in V1 plus R in V5 or V6≥35 mm or R in aVL >11 mm (Fig. 111-3).
Outline ⬆