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重症心脏瓣膜病患者术后早期氧代谢动力学变化观察 被引量:2

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摘要 目的探讨重症心脏瓣膜病患者围术期氧代谢动力学变化规律。方法重症瓣膜病手术患者22例,于手术麻醉时经颈内静脉置入4F或5F Swan-Ganz四腔漂浮导管,经桡动脉置入动脉测压管。于术后4、8、12、24、48、72h抽取动、静脉血标本作血气分析并测定动脉血乳酸(LAC)水平,用温度稀释法测定心输出量(CO)并计算心排指数(CI),应用监护仪计算氧供指数(DO2I)、氧耗指数(VO2I)及氧摄取率(ER()2)。结果①术后4h患者VO2I明显增加,ERO2上升,LAC增加,为72h最高峰。而此期间DO2I并未表现明显升高。术后8h VO2I、ERO2及LAC下降,至术后12h趋于平稳。②术后8—12h DO2I明显降低,为72h低谷期,至术后24h渐趋平稳。③本组患者围术期72h氧供、氧耗存在明显直线相关关系。结论重症瓣膜病患者心脏术后4h为偿还氧债高峰期,术后8—12h更易出现氧代谢紊乱,72h内均存在明显病理性氧供依赖关系。
出处 《山东医药》 CAS 北大核心 2010年第6期86-87,共2页 Shandong Medical Journal
关键词 瓣膜病 氧供 氧耗
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