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目的 探讨病毒性心肌炎对儿童脑血流动力学的影响。方法 彩色多普勒超声心动图测量３０ 例病毒性心肌炎及１０例正常儿大脑前、中、后动脉血流量和心功能。结果 病毒性心肌炎儿大脑前、中、后动脉血流量、舒张末流速下降，血管阻力指数升高，左房室瓣Ｅ－Ｆ斜率及心射血分数下降，频发室早可进一步影响血液动力学，抗心律失常药控制后脑血流改善。结论 抗心律失常药控制频发室早，用血管紧张素酶抑制剂或钙拮抗剂解除脑血管痉挛，降低血管阻力，有助于脑血流及心舒缩功能的改善。
Objective To investigate the effect of viral myocarditis on cerebral hemodynamics in children. Methods Color Doppler echocardiography was used to measure the blood flow and heart function of 30 patients with viral myocarditis and 10 normal children with anterior, middle and posterior cerebral arteries. Results In children with viral myocarditis, the anterior, middle and posterior arterial blood flow, the end-diastolic velocity decreased, the vascular resistance index increased, the left atrioventricular valve E-F slope and the fractional ejection fraction decreased, and the frequent occurrence of ventricular dysfunction could further affect the hemodynamics Learn, anti-arrhythmic drug control cerebral blood flow improved. CONCLUSION: Antiarrhythmic drug control is frequently used in patients with ventricular arrhythmia. With angiotensin-converting enzyme inhibitors or calcium antagonists, cerebral vasospasm can be relieved and vascular resistance can be reduced. It is helpful to improve cerebral blood flow and cardiac function.