直立倾斜试验对不明原因晕厥患儿的诊断价值

Head-up Tilt Table Test in the Diagnosis of Childhood Unexplained Syncope

目的 探讨基础直立倾斜试验对不明原因晕厥 (UPS)患儿的诊断价值。方法 UPS患儿 30例 ,年龄 6～ 18岁 ,平均 (11.74± 2 .82 )岁 ,采用电动倾斜床取头高脚低位直立倾斜 70°后每 5min自动测量血压和心电变化 ,评价倾斜试验结果。结果 30例UPS中倾斜试验阳性 10例 (占 33.3% ) ,反应类型为心脏抑制型及血管抑制型各 5例 ,晕厥发作在倾斜站立 10～ 4 0min ,平均 (2 4 .0± 12 .2 )min。结论 倾斜试验是诊断儿童血管迷走性晕厥 (VVS)的有效方法 ,对临床UPS患儿具有很好地诊断价值。

Objective To study the diagnostic value of head up tilt table test in childhood unexplained syncope. Methods Thirty children with this disorder aged from 6 to 18 years old (mean 11.74 ± 2.82 ) were taken the 70 degrees head up tilt table test. Blood pressure and electrocardiogram were recorded at 5 minute intervals by multifunctional monitor in these subjects. The result of the test was evaluated according to the symptoms of patients during the test. Results Of the 30 subjects, 10 presented positive reaction of head up tilt table test ( 33.3% ), in which 5 showed the reaction type of heart inhibition and 5 of blood vessel inhibition. The syncope episodes occurred after standing time of 10 40 min (mean 24.0 ± 12.2 ). Conclusions The head up tilt table test may be a useful method in the diagnosis of vasovagal syncope, helping to determine the origin of unexplained syncope in children