摘要
为探讨基础直立倾斜试验对不明原因的晕厥患儿的诊断价值，应用直立倾斜试验（倾斜角度６０度，试验持续时间４５分钟）对４２例不明原因的晕厥患儿进行诊断研究，并以１３名正常小儿作对照。结果：基础直立倾斜试验在不明原因晕厥患儿的阳性率为６７％，对照组阳性率为０。诊断敏感度、特异度及诊断价值分别为６７％、１００％及７４％。阳性反应诱发时间为２２±１２分钟。在２８例阳性反应患儿中，１５例为血管抑制型反应，表现为血压明显下降，心率增快；３例为心脏抑制型反应，表现为心率明显下降，血压不变；１０例为混合型反应，其血压、心率均明显下降。提示：基础直立倾斜试验可较好地、客观地对血管迷走性晕厥进行诊断。
To investigate the efficacy of the head up tilt test in the workup of syncope of unknown origin, we studied 42 patients with unexplained syncope and 13 healthy children by the head up tilt to 60° for 45 minutes. The results showed that the head up tilt test was positive in 67% of patients with unexplained syncope, but none in control subjects. The sensitivity, specificity and diagnostic value of the tilt test were 67%, 100% and 75%, respectively. The average time to the onset of symptoms was 22±12 minutes during the tilt test. Three patterns of response to head up tilt test were observed in positive responders: vasodepressor pattern with an abrupt fall in blood pressure in 15/28; cardioinhibitory pattern with profound bradycardia in 3/28, and mixed pattern with both blood pressure and heart rate decrease in 10/28. The result of this study suggests that the head up tilt test is an useful and an objective diagnostic tool for evaluating vasovagal syncope in children.
出处
《中华儿科杂志》
CAS
CSCD
北大核心
1997年第6期309-312,共4页
Chinese Journal of Pediatrics
