right-ventricular hypertrophy: S –type
Hypertrophy of auricles is determined by changes of P-wave.
Left atrium hypertrophy is detected by ―P mitrale‖: wide
(>0.1 s),
splitted Р-wave in I, II, AVL, left chest leads (V5-6); flat or negative Р in III,
biphasic or negative (>1 mm)
Р in V1
Left atrium hypertrophy is typical in mitral valves diseases (mitral stenosis and mitral incompetence).
I
III
Left atrium hypertrophy