ABSTRACT
Objective To observe through Color Doppler cordis Ultrasonographic image screening the characteristic changes on Chronic High Altitude Heart Diseases among Tibetans based on the data stand -ard set up by Qing Hai researchers .Methods Ninety-five subjects suffering from chronic high altitude diseases were checked by Color Doppler Ultrasonographic image devise .Datum were collected on the flowing rang measurement of the left ventricular ( LV) diameter, right ventricular diameter , left atrial ( LA) diame-ter, right atrial (RA), pulmonary aortic (PA) diameter.Index of the RV systolic and diastolic function were measured .The control group was fifth health subjects .Results There was transverse diameter of the RA and RV and also the diameter of the aotic and PA , showed highly significance in differences ( P 0.05 ) .The study group subjects LV systolic and diastolic function were declined , showed significant differences (0.01