【摘要】 <正> 随着复杂心内手术的开展,血气监测已成为确保病人安全的一种重要手段。正确评价血气分析结果,不仅需了解病人病理生理改变,还应熟悉麻醉方法、手术操作以及体外循环方法等的影响,否则就难以维持好病更多还原

【Abstract】 The results of blood gas monitoring during cardiopulmonary bypass and intra-cardiac operations on 87 patients were analyzed.1.All patients ventilated with mechanical respirators,the PaO₂ rised distinctly,but no accumulation of CO₂ was seen.2.The Zhong Hun Model Anaesthesia Apparatus did raise d the PaO₂ conspicuously,but,owing to the relatively small volume of soda lime canister on the one hand and thepartial re-inhalation on the other,it has often caused varying degrees of accumulationof CO₂. 3.The raising of HCO₃^- of extracellular fluid through the intravenous instillationof NaHCO₃ solutions at a dosage of 10mEq/1 after induction of anaesthesia couldprevent metabolic acidosis during the period prior to extracorporeal circulation.4.The maintenance of intra-arterial perfusion at a flow rate of more than 80ml/kg/min,and at an average perfusion pressure or blood pressure of no less than80mmHg,would always keep the BE value at a near normal level after the terminat-ion of extracorporeal circulation.更多还原