Corrected orthogonal ECG leads in the diagnosis of right ventricular hypertrophy

Examined 208 patients with "pure" or predominant mitral stenosis. The diagnosis was confirmed during surgical treatment, in 17 patients - on the section. The high sensitivity of corrected orthogonal leads in the diagnosis of right ventricular hypertrophy at various stages of mitral stenosis was shown. At stage II of mitral stenosis, changes in the QRS complex in orthogonal leads were detected in 60.4%, and in ordinary ones - in 34.8% of patients, in stage III - in 83.8% and 64.5%, respectively. In the IV stage of the disease, right ventricular hypertrophy along orthogonal leads was found in 68.5% of patients, and in normal ones - in 52.7%. In total, using orthogonal leads, right ventricular hypertrophy was determined in 73.1%, and according to 12 conventional leads - in 54.3% of patients.