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目的:探讨直立倾斜试验对儿童不明原因晕厥的诊断价值,为临床诊断提供科学依据。方法:对208例不明原因晕厥的儿童给予进行直立倾料试验检查,持续进行心电监护监测,记录其血压、心率变化,分析试验结果。结果:145例(69.71%)出现阳性的血管迷走神经反应,73例(50.34%)为血管抑制型反应;19例(13.10%)呈心脏抑制型反应;53例(36.55%)为混合型反应型,并且诱发因子多为持久站立。结论:不明原因晕厥患者在直立倾斜试验中以血管迷走反应为主,持久站立是血管迷走神经性晕厥的主要诱因。
Objective: To investigate the diagnostic value of erect tilt test in children with unexplained syncope and provide a scientific basis for clinical diagnosis. Methods: A total of 208 children with unexplained syncope were given an upright dumping test. The monitoring of ECG was continued. The changes of blood pressure and heart rate were recorded and the test results were analyzed. Results: The positive vasovagal responses were found in 145 cases (69.71%), of which 73 (50.34%) were vasoconstrictors, 19 (13.10%) were cardioresistant and 53 (36.55%) were mixed reactive , And most of the inducing factors for the long-standing. CONCLUSIONS: Patients with unexplained syncope are predominantly vasovagal in an upright tilt test. Persistent standing is the major cause of vasovagal syncope.