WILLIAM B. KANNEL, M.D., F.A.C.P., M.P.H.; TAVIA GORDON; WILLIAM P. CASTELLI, M.D.; JAMES R. MARGOLIS, M.D.
Risk of clinically overt coronary heart disease in 190 persons with "definite" and 264 with "possible" electrocardiographic left ventricular hypertrophy (ECG-LVH) was compared with that of a total cohort of 5,127 men and women followed over 14 years. Prevalence of both coronary heart disease and ECG-LVH increased in proportion to antecedent blood pressure. Persons who acquired "definite" ECG-LVH had a residual threefold increased risk of clinically overt coronary heart disease after adjustment for the effect of coexisting hypertension. "Possible" ECG-LVH was associated with a twofold increased risk, but this was virtually obliterated on adjustment for hypertension. Risk of every clinical manifestation of coronary heart disease, and of death in particular, was increased, and 40% with prior ECG-LVH died in their initial attack, a fatality rate comparable with that of persons with prior overt coronary heart disease. ECG-LVH is thus a grave prognostic sign and a harbinger of clinically overt coronary heart disease. It is tempting to hypothesize that ECG-LVH without other explanation based mainly on increased voltage (possible LVH) is largely an expression of hypertensive hypertrophy and that with more marked voltage increases accompanied by S-T and T wave abnormality (definite LVH) indicates ischemic myocardial involvement.
KANNEL WB, GORDON T, CASTELLI WP, MARGOLIS JR. Electrocardiographic Left Ventricular Hypertrophy and Risk of Coronary Heart Disease: The Framingham Study. Ann Intern Med. ;72:813–822. doi: 10.7326/0003-4819-72-6-813
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Published: Ann Intern Med. 1970;72(6):813-822.
Cardiology, Coronary Heart Disease.
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