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新生儿心力衰竭(简称心衰),其病因与临床表现与年长儿及成人不尽相同,且病情变化快,死亡率可达43.2%,故应予以重视. 一、新生儿处于脐血循环中断并建立正常。体、肺循环的过渡阶段,其心血管解剖生理及血液动力学特点有:(一)卵圆孔和动脉导管解剖上尚末关闭,肺小动泳肌层较厚,当动脉血氧分压降低或氢离子浓度增高时,动脉导管开放而肺小动脉收缩,可重现胎儿期心血管的右向左分流;(二)植物神经对心血管的调节功能差,心率快,
Neonatal heart failure (referred to as heart failure), its etiology and clinical manifestations and older children and adults are not the same, and the condition changes rapidly, the mortality rate of up to 43.2%, it should be taken seriously .A newborns in umbilical cord blood circulation is interrupted And establish normal. Body, the transitional phase of pulmonary circulation, cardiovascular cardiovascular physiology and hemodynamic characteristics are: (a) foramen ovale and ductus arteriosus Shang Shangmo off, pulmonary milky muscle thick, when arterial partial pressure of oxygen decreased Or hydrogen ion concentration increases, the patent ductus arteriosus open and contracting pulmonary arterioles, reproducible right fetal heart during left shunt; (B) autonomic cardiovascular regulatory function is poor, fast heart rate,