Variability and concordance of Cornell and Sokolow-Lyon electrocardiographic criteria in hypertensive patients

Blood Pressure
Ernest VinyolesJosep Agudo

Abstract

To assess the variability and concordance of left ventricular hypertrophy electrocardiographic (LVH-ECG) criteria. Convenience sampling of hypertensive subjects without coronary disease or bundle branch blocks. Two electrocardiograms (ECGs) were performed on each patient. Two investigators carried out two blind-readings of each ECG (Cornell and Sokolow-Lyon criteria). The between-rater and within-rater reliability were assessed (intraclass correlation coefficient, ICC). Poor concordance was defined: mean voltage difference between both ECGs >2 mm; 824 ECG readings were performed in 103 subjects (58.3% females), aged 66.8±8.8 years, mean blood pressure 141±15.10/78±9.0 mmHg. The between-rater ICCs of the baseline ECG were 0.97(95% CI 0.96-0.98) and 0.98 (95% CI 0.97-0.99) for Cornell and Sokolow-Lyon criteria, respectively. Poor concordance was found in 39.8% and in 41.7% of the cases for Cornell and Sokolow-Lyon criteria, respectively. Systolic blood pressure was found to be significant and positively associated with both criteria. Elderly hypertensive subjects, with higher ECG voltages and lower pulse pressure presented poor concordance of Cornell criteria. The between-rater and within-rater reliability of Cornell and Sokolow-...Continue Reading

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