ABSTRACT
AIM: To study efficacy of different ECG criteria of hypertrophy of left ventricular myocardium (LVH) in hypertensive patients with reference to overweight and obesity. MATERIAL AND METHODS: The authors analyse data on 100 patients (42 males and 58 females) aged 19-79 with diagnosis of arterial hypertension stage I-II. ECG was conducted in 12 leads. LVH by ECG was determined according to the following criteria: Sokolov-Lyon (S-L): Sv1+Rv5(v6) > 35 mm; Cornell voltage (Crn V): R avL +Sv3 > 28 mm (> 20 mm for females; Cornell product (Crn P): (RavL+Sv3)xQRSduration > 2440 mm x ms (for females RavL+Sv3 amplitudes + 0.6 mm). To verify L VH by echoCG, the authors used threshold values of left ventricular myocardium mass index (LVMMI) 125 g/m(2) for males and 110 g/m(2) for females. LVMMI was calculated by two methods: LVMM to body surface area (BSA) 2) LVMM to BSA of an ideal figure of a relevant height. Depending on the BMI all the patients were divided into 3 groups: with normal weight (BMI under 25 kg/m2), with overweight (BMI between 25 and 30 kg/m(2)), with obesity (BMI over 30 kg/m(2)). RESULTS: Sensitivity of the criterion Crn-P was the highest. The S-L criterion had the least sensitivity (under 10%) in groups with overweight by more than 25 kg/m(2). In these groups sensitivity of all ECG criteria of L VH depends on some factors: on indexation of LVH by body size, gender and overweight. S-L criterion sensitivity is higher in subgroups of males irrespective of overweight and obesity. CONCLUSION: Informative value of LVH ECG criteria depends on the method of LVMM indexation by body size, overweight and gender of the patients.
