Using tricuspid valve echocardiogram, the right ventricular time intervals and relevant parameters of the normal persons were studied and compared with those of the patients with chronic cor pulmonale. Six parameters related to time intervals in a cardiac cycle for the early diagnosis of cor pulmonale were proposed, i.e., RIRT≥37 ms, RIRT/C-D≥0.076, RIRT/REML≥0.613, REML≤53 ms, RSTI≤420 ms and RMST≤356 ms. The use of these parameters for the early diagnosis of cor polmonale is more significant than conventional criteria. A combined use of these parameters with the conventional criteria may improve further the use of echocardiogram for the early diagnosis of cor pulmonale.

Peripheral erythrocyte rosette-forming cells (ERFC), Tγ cell and Tμ cell counts were studied in 141 children with different types of viral hepatitis and in 65 healthy children as control. The results showed variations not only in total number of ERFC, but also in Tγ cells and Tμ cells in different types of viral hepatitis. It was also found that determination of Tγ cell percentage may be of value in diagnosing the condition of the diseases, and determination of Tγ cell and Tγ/Tμ ratio may be of value in estimating the prognosis. The possible mechanism of variations in ERFC, Tγ cells and Tμ cells is discussed.