EBMcalc Medical Calculator

Romhilt-Estes Criteria for Left Ventricular Hypertrophy

The EBMcalc module Romhilt-Estes Criteria for Left Ventricular Hypertrophy is available in EBMcalc Complete Edition.

This calculator evaluates the following Clinical Criteria:

Biggest R or S wave in the limb leads greater than or equal to 20 mm; or S wave in V1 or V2 greater than or equal to 30 mm; or R wave in V5 or V6 greater than or equal to 30 mm
Left atrial involvement - terminal deflection of P wave in V1 is 1 box wide, and 1 box deep or more
Left axis deviation - QRS axis is -30 degrees or more negative
QRS duration greater than or equal to 0.09 second
Intrinsicoid deflection in V5 and V6 greater than or equal to 0.05 second
ST-T segment changes ("LV strain" = ST-T vector shifted opposite to QRS vector)

References

Romhilt, DW, Bove KE, et al. A critical appraisal of the electrocardiographic criteria for the diagnosis of left ventricular hypertrophy. Circulation. 40:185, 1969. PubMed ID: 4240354

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