自1979年Shimada等倡用静脉注射气体二氧化碳施行超声心腔造影以来,由于效果优良,药源充分,价格低廉,使用方便而得到临床的好评和广泛应用。在我国,徐智章等于1980年开始将此法应用于临床,他们用5％维生素C(pH2.0)与5％碳酸氢钠(pH8.4)按2:1比例混合后静脉注射,我们参考有关资料配制成上述两种注射液,不仅效 Since 1979, Shimada and other advocates of intravenous injection of carbon dioxide gas to perform echocardiography, due to good results, adequate source, low cost, easy to use and received clinical praise and widely used. In our country, Xu Zhizhang equaled the clinical application of this method in 1980. After they were mixed with 5% vitamin C (pH2.0) and 5% sodium bicarbonate (pH8.4) in a ratio of 2: 1, The information prepared into the above two injection, not only effective