论文部分内容阅读
近年来对未成熟儿的成活率有明显的提高,除机械通气的不断改善,以弥补肺发育的不成熟;静脉高营养以暂代胃肠道的功能外,及时关闭未成熟儿的动脉导管亦为成活率提高的重要关键。动脉导管在胎内为肺动脉与主动脉之间的一条重要通道;胎儿因肺无呼吸作用,右室入肺动脉的血流大多通过动脉导管的短路直接入降主动脉,经脐动脉在胎盘进行气体交换。出生后经肺呼吸血氧提高,动脉导管
In recent years, immature children have significantly improved the survival rate, in addition to continuous improvement of mechanical ventilation to make up for the immaturity of lung development; intravenous nutrition to temporarily transit gastrointestinal function, the timely closure of the patent ductus arteriosus It is also an important key to improving the survival rate. Artery duct in the tire for the pulmonary artery and the aorta between the aorta; fetus due to lung no respiration, most of the right ventricular pulmonary artery blood flow through the ductus arteriosus directly into the aorta, the umbilical artery in the placenta for gas exchange . Breathing by breathing through the lungs after birth is increased. Artery catheters