目的观察先天性心脏病儿童行体外循环术中凝血功能的变化，并分析其监测的应用价值。方法选取2012年1月至2013年12月间30例先天性心脏病体外循环术患儿为研究组，并且选取同期15例先天性心脏病非外循环术患儿为对照组。观察两组患儿手术前后的凝血功能变化。结果研究组患儿手术前后凝血指标比较差异无统计学意义（ P >0.05）；研究组患儿术后24 h 凝血指标显著低于对照组，差异有统计学意义（ P 0. 05). The changes in blood coagula-tion parameters in patients of study group in 24 h after surgery were significantly lower than those of control group,and the difference was statisti-cally significant( P < 0. 05). The difference in PLT counts in 3 h after surgery in patients with Fallot′s tetralogy and ventricular septal defect im-mediately after surgery and 3 h after surgery was statistically significant( P < 0. 05). The difference in levels of FIB in patients with Fallot′s tetral-ogy and patients with ventricular septal defect at immediately and 24 h after surgery was statistically significant( P < 0. 05). Conclusion The application of bypass circulation is better than traditional non - cardiopulmonary bypass in surgical treatment of patients with Fallot′s tetralogy and ventricular septal defect in pediatric patients with congenital heart disease,it had certain impact on coagulation parameters,but they return to nor-mal in 24 h after surgery. It is important to strengthen the monitoring of clinical coagulation parameters,hence it can better guide surgeons in oper-ations,thereby it may reduce the risk of surgery,and it is important to apply in clinical practice.
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