Effects of Oxygen Inhalation on Cardiac Function of Patients with Chronic Mountain Sickness / 第三军医大学学报

ABSTRACT

The left and right cardiac function of 11 patients with chronic mountain sickness was studied before and after oxygen administration. It was found that after pure oxygen was inhaled, the internal diameter of the right ventricle, the ratio between right and left ventrcular diameters, and the heart rate were decreased significantly, while the ?-wave excursion of the pulmonary valve and the EF slope of the mitral valve were increased obviously. However there was no change of the systolic time interval of both the ventricles and of the left ventricular systolic function. The results suggest that oxygen inhalation could relieve hypoxic pulmonary hypertension and improve left ventricular diastolic function.