常見例句Results After pneumomediastinum(PM),as compared with the baseline measurements,the venacaval pressure raised and the cardiac output decreased significantly. 觀察治療前后的血流動力學和血氣變化。結果縱隔氣腫使上、下腔靜脈壓升高,回心血量減少,心排量下降。venacaval clamp 腔靜脈夾 返回 venacaval