CAUSES
■ Mitral stenosis
■ Pulmonary hypertension
■ Chronic PE
■ Left to right shunts
ECG FINDINGS(SEEFIGURE2.5)
■ Right axis deviation
■ Tall R wave in V 1 (R wave > S wave)
■ Deep S wave in V 6
■ Inverted T waves in R precordial leads (R ventricular strain)
LEFTVENTRICULARHYPERTROPHY(LVH)
Prominent L-sided forces cause characteristic ECG changes.
CAUSES
■ Chronic hyptertension (HTN)
■ Chronic CAD and ischemia
■ Aortic valve disease
■ Congenital heart disease
■ Hypertrophic cardiomyopathy
ECG FINDINGS(SOKOLOW ANDLYONCRITERIA) (SEEFIGURE2.6)
■ S in V 1 + R in V 5 (or V 6 )≥35 mm
■ R in aVL ≥11 mm
■ May see T-wave strain pattern
CARDIOVASCULAR EMERGENCIESIIIIIIPHYTIM 9TRIP: Id
25 mm/sec: 1 cm/mVaVRaVLaVFV1V2V3V4V5V6FIGURE 2.5. Right ventricular hypertrophy.