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本文对我院14年来988例法乐氏四联症(TOF)心导管造影术时56例缺氧发作(5.67％)分析发现:年龄越小发生率越高;与动脉血氧饱和度无明显关系;缺氧发作者多为中度及重度右室流出道狭窄和肺动脉发育程度无明显关系;贫血及高血红蛋白血症为诱发因素;心导管操作及造影刺激有直接关系;镇静不足和麻醉过浅使患儿长时间哭吵是促发原因之一。作者认为缺氧发作原理与右室流出道痉挛、系统血管阻力下降及呼吸中枢敏感和右室流出道收缩的协同作用有关。故作者强调术前、术时尽量避免以上促发因素,一旦缺氧发作应快速有效处理包括解除右室流出道痉挛、增加血管阻力和纠正贫血及酸中毒等,必要时外科急诊手术。
In this paper, 98 cases of 988 cases of tetralogy of Fallot (TOF) cardiac catheterization in 56 cases of hypoxic attack (5.67%) analysis found that: the younger the higher the incidence; no significant correlation with arterial oxygen saturation Relationship; hypoxia were mostly moderate and severe right ventricular outflow tract stricture and pulmonary artery development has no significant relationship; anemia and hyperhemoglobin as a predisposing factor; cardiac catheterization and angiography has a direct relationship; lack of sedation and anesthesia Shallow children crying for a long time is one of the causes. The authors believe that the principle of hypoxia attack and right ventricular outflow tract spasm, decreased systemic vascular resistance and respiratory center sensitivity and systolic systolic right ventricular outflow tract related. Therefore, the author emphasizes preoperative and postoperative as much as possible to avoid the above factors, once the hypoxic attack should be quickly and effectively, including the right ventricular outflow tract spasm, increased vascular resistance and correct anemia and acidosis, if necessary, surgical emergency surgery.