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改良超滤技术对先天性心脏病患儿体外循环术后血流动力学的影响 被引量:8

Influence of modified ultrafiltration on hemodynamic after extracorporeal circulation operation in children with congential heart disease
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摘要 目的 探讨改良超滤技术对先天性心脏病患儿体外循环术后血流动力学的影响.方法 选择2014年2-8月于首都医科大学附属北京安贞医院就诊的先天性心脏病患儿48例,采用改良超滤技术进行体外循环术.改良超滤采取动脉-静脉方式,流速控制在10 ~15 ml/(kg·min),至血细胞比容达0.30 ~0.35或体外循环管道剩余机血基本用完后停止超滤,改良超滤时间10~15 min.记录手术时间、体外循环时间、升主动脉阻断时间、改良超滤滤出液体量、血细胞比容.分别在体外循环停机时(T0)、改良超滤后1 min(T1)、2 min(T2)、5 min(T3)、10 min(T4),使用压力记录分析仪采集并记录各项血流动力学参数,包括心指数、每搏量指数(SVI)、体循环血管阻力指数(SVRI)、压力升支最大速率(dp/dt)、心率、收缩压、舒张压和重脉压.结果 手术时间95 ~ 165 min,体外循环时间20 ~55 min,升主动脉阻断时间12 ~ 34 min,改良超滤滤出液体150~300 ml,所有患儿体外循环中血细胞比容维持0.20 ~0.25,改良超滤结束后血细胞比容为0.30 ~0.35.T0~T4时点,患儿心率无明显变化.T1、T2、T3、T4时点心指数、SVI、dp/dt、收缩压、舒张压、重脉压明显高于T0时点[(3.1±0.7)、(3.3±0.7)、(3.4±0.9)、(3.4±0.9) L/m^2比(2.4 ±0.5)L/m^2;(22±6)、(24±6)、(25±8)、(25±8) ml/m^2比(18 ±6) ml/m^2;(1.15 ±0.23)、(1.20 ±0.26)、(1.23±0.28)、(1.21±0.27)mmHg/ms(1 mmHg =0.133 kPa)比(1.03±0.29) mmHg/ms;(103±12)、(108 ±13)、(110±15)、(109±13) mmHg比(87±14)mmHg;(54±10)、(56±10)、(57±10)、(58±11) mmHg比(44 ±9)mmHg;(66±13)、(68±13)、(71±16)、(71±15)mmHg比(53±11) mmHg],SVRI明显低于T0时点[(1 728±373)、(1 677±354)、(1 658±317)、(1 683±381)dyne· s· m^2/cm^5比(1 805 ±317)dyne·s·m^2/cm^5],差异均有统计学意义(均P <0.05);T2、T3、T4时点,心指数、SVI、dp/dt、收缩压、舒张压、重脉压明显高于T1时点,差异均有统计学意义(均P <0.05).结论 改良超滤技术能明显改善先天性心脏病患儿体外循环术后血流动力学情况. Objective To explore the influence of modified ultrafiltration on hemodynamic after extracorporeal circulation operation in children with congential heart disease.Methods Totally 48 children with congential heart disease from February to August 2014 undergoing extracorporeal circulation operation were enrolled.The modified ultrafiltration was used during operation with velocity of 10-15 ml/(kg · min);when the hematocrit reached 0.30-0.35 or the residual blood in extracorporeal circulation pipeline was used up,the ultrafiltration was stopped,with duration of 10-15 min.The durations of operation,extracorporeal circulation and ascending aorta blocking,the liquid volume of ultrafiltration filter,the hematocrit were recorded.The hemodynamic parameters,including cardic index,stroke volume index (SVI),systemic vascular resistance index (SVRI),maximum pressure rise rate (dp/dt),heart rate,systolic pressure,diastolic blood pressure,DicP were recorded when extracorporeal circulation was stopped (T0),1 min (T1),2 min (T2),5 min (T3),10 min (T4) after modified ultrafiltration.Results The durations of operation,extracorporeal circulation and ascending aorta blocking were respectively 95-165 min,20-55 min and 12-34 min;the liquid volume of ultrafiltration filter was 150-300 ml;the hematocrit in extracorporeal circulation was 0.20-0.25,and was 0.30-0.35 after modified ultrafiltration.At T0-T4,no significant changes of heart rate were observed;the cardic index,SVI,dp/dt,systolic blood pressure,diastolic blood pressure,DicP at T1,T2,T3,T4 were significantly higher than those at T0[(3.1±0.7),(3.3±0.7),(3.4±0.9),(3.4±0.9)L/m^2 vs (2.4±0.5)L/m^2;(22±6),(24±6),(25±8),(25±8)ml/m^2 vs (18 ±6)ml/m^2;(1.15±0.23),(1.20±0.26),(1.23±0.28),(1.21 ± 0.27) mmHg/msvs (1.03±0.29) mmHg/ms;(103 ±12),(108±13),(110±15),(109±13) mmHg vs (87±14) mmHg;(54±10),(56±10),(57±10),(58±11) mmHg vs (44±9) mmHg;(66±13),(68± 13),(71 ± 16),(71 ± 15) mmHg vs (53 ± 11) mmHg],the SVRI was significantly lower than that at T0 [(1 728 ±373),(1 677 ±354),(1 658 ±317),(1 683 ±381)dyne · s · m^2/crn5 vs (1 805 ±317)dyne · s · m^2/cm^5] (P 〈0.05);the cardic index,SVI,dp/dt,diastolic blood pressure,systolic blood pressure,DicP at T2,T3,T4 were significantly higher than those at T1 (all P 〈 0.05).Conclusion Modified ultrafiltration can significantly improve the hemodynamics after extracorporeal circulation operation in children with congential heart disease.
出处 《中国医药》 2016年第3期347-349,共3页 China Medicine
关键词 先天性心脏病 体外循环 改良超滤 血流动力学 Congenital heart disease Cardiopulmonary bypass Modified ultrafiltration Hemodynamics
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