Evaluation of the electrocardiographic signs of left ventricular hypertrophy, using the echocardiography in patients with hypertensive cardiopathy.

The electrocardiography (ECG) contribution in the diagnosis of left ventricular hypertrophy (LVH) associated to arterial hypertension was evaluated in 54 hypertensive patients, 39 men and 15 women, with a mean age of 51.6 years, mean systolic and diastolic pressure 186 +/- 46 and 111 +/- 46 mmHg, respectively. The investigations included routine clinical and biologic tests as well as standard ECG in 12 derivations, Frank vectorial ECG and mono and bidimensional echocardiography (ECOCG). A correlative study of the ECG parameters demonstrated that the left ventricular mass index evaluated by ECOCG correlates best with Romhilt ECG index and with an LVH index elaborated by the authors of the present study, based on the Frank vectorial recordings (R wave amplitude in X and Z derivations; QRS duration in Z). These data were used in drawing linear regression equations for evaluation of the left ventricular mass, starting from the above-mentioned parameters. The results are discussed in comparison with those of other authors and their practical value is demonstrated.