儿童直立倾斜试验血流动力学变化与身高、体重及体质量指数的关系

目的 探讨儿童直立倾斜试验（HUTT）血流动力学变化与身高、体重及体质量指数（BMI）的关系.方法 收集2000年1月至2012年8月在中南大学湘雅二医院儿童晕厥专科 门诊就诊或住院的不明原因晕厥、头痛、头晕、胸闷、叹气等儿童1 906例,男964例,女942例,年龄2.00 ～ 17.92岁,平均10.84±2.97）岁.测量身高、体重,计算BMI.在取得受试者或监护人书面知情同意后,进行HUTT.根据HUTT结果及反应类犁分HUTT阴性组、体位性心动过速综合征（POTS）组、血管迷走性晕厥（VVS）血管抑制型组、VVS心脏抑制型组、VVS混合型组.结果 与HUTT阴性组相比,年龄在POTS组、VVS血管抑制型组、VVS混合型组较大（P＜0.05）,身高、体重、体表面积在POTS组、VVS血管抑制型组、VVS混合型组增加（P＜0.01）.与POTS组相比,体重、体表面积在VVS血管抑制型组、VVS混合型组降低（P＜0.05）,VVS心脏抑制型组与其他各组比较差异未见统计学意义（P＞0.05）.结论 儿童HUTT血流动力学变化与身高、体重及BMI存在一定关系.

The relationship between the hemodynamic changes in head-up tilt test and the height,body quality and body mass index in children

Objective To explore the relationship between the hemodynamic changes in head-up tilt test（HUTT） and the height,body quality and body mass index in children.Methods We choosed 1906 cases of unexplained syncope,headache,dizziness in children who came from Children Syncope Outpatient in the Second Xiangya Hospital of Central South University from Jan.2000 to Aug.2012,Male 964 cases and female 942 cases.Their ages were 2 to 17.92 years old.The average age was 10.84 ± 2.97 years old.The height and body mass in children was measured,BMI was calculated.After obtain written informed consent subjects or guardian,the HUTT was carried.According to the result of HUTT and reaction type,the children were divided into HUTT negative group,orthostatic tachycardia syndrome（POTS） group,vasovagal syncope （VVS） vascular inhibitory type group,VVS heart inhibited type group,the VVS mixed group.Results Compared to the HUTT negative group,the age increased in POTS group and VVS vascular inhibitory group and VVS mixed group（P 〈 0.05）,height and body quality and body surface area increased in POTS group and VVS vascular inhibitory group and VVS mixed group（P 〈 0.01）.Compared to POTS group,body quality and body surface area reduced in VVS vascular inhibitory group and VVS mixed group（P 〈 0.05）.VVS heart inhibitory group was no statistically significant difference compared with the other groups （P 〉 0.05）.Conclusion There is a certain relationship between the hemodynamic changes in HUTT and the height,body quality and BMI in children.