Use of the signal-averaged QRS duration for diagnosing left ventricular hypertrophy in hypertensive patients.

摘要: Abstract We analysed the diagnostic performance of signal-averaged QRS duration for detection left ventricular hypertrophy in 100 consecutive outpatients (62 men and 38 women; mean age, 49.8 ± 11.8 years) with essential hypertension compared results some currently employed electrocardiographic criteria. Forty-eight healthy subjects (24 24 46.4 12.1) normal physical, echocardiographic findings served as a control group to derive reference values duration. Twenty-six (26%) hypertensives (22 4 women) had echocardiographically defined mass ≥ 261 g 172 women or index 125 g/m 2 112 women. The was different patients than those without (102.1 10.8 vs. 95.8 8.4 ms; P n.s.). correlation between weak but statistically significant ( r = 0.34; 0.30; 0.42; 175 mm, > 90 ms. Sensitivities ranged from 4% 58% specificities 74% 99%. To compare criteria we modified, when appropriate, partitions value test positivity reach clinically relevant 95–100% range specificity. use McNemar's did not show differences among sensitivities. Using same procedure, 12% sensitivity sex-specific 15% single criterion both sexes significantly differ each other sensitivities standard Therefore, appears have limitations comparable diagnosis hypertrophy.