Studies on deflection area vectors of QRS and T and ventricular gradient in right ventricular hypertrophy.

Role of the vectorcardiogram-derived spatial QRS-T angle and ventricular gradient in diagnosing left ventricular hypertrophy

Polycythemia and Right Ventricular Hypertrophy.

• The chronic hypoxia of high altitude produces an elevated pulmonary arterial pressure" resulting in right ventricular hypertrophy.' Cournand has proposed that the pulmonary hypertension and subsequent right ventricular hypertrophy found in patients with chronic pulmonary disease are associated with polycythemia, hypervolemia, and increased cardiac output secondary to the hypoxemia present in ...

Right ventricular hypertrophy.

The electrocardiograms of 22 cases showing isolated right ventricular hypertrophy at autopsy were examined for changes suggestive of right ventricular hypertrophy. Only 5 of 22 cases fulfilled at least one of the criteria of Sokolow and Lyon and only three could be diagnosed as having right ventricular hypertrophy by the criteria of Myers, Klein and Stofer. Factors contributing to the developme...

Effect of Carvacrol on Catalase Activity and mRNA Expression Following Left Ventricular Hypertrophy in Rats

Background and Aims: Cardiac hypertrophy is a compensatory augmentation response of the heart due to pressure overload that can lead to heart failure. Carvacrol is considered as the major compound of many plants, that possesses strong antioxidant properties. The present study aimed to evaluate effect of carvacrol on catalase activity and mRNA expression following left ventricular hypertrop...

Epicardial excitation studies in dogs with congenital right ventricular hypertrophy.

The time and sequence of epicardial activation was determined by measuring the onset of activation at 26 to 47 representative epicardial sites on each ventricle. Normal dogs and dogs with right ventricular hypertrophy resulting from various congenital heart lesions were studied. The total right ventricular epicardial activation time was slightly prolonged (10 msec) in some dogs with right ventr...