儿童青少年体位性心动过速综合征体质量指数变化

Changes in body mass index of postural tachycardia syndrome in children and adolescents

目的目的探讨儿童青少年体位性心动过速综合征(POTS)体质量指数(BMI)的变化。方法回顾性分析2009年8月至2018年6月因不明原因晕厥或晕厥先兆在中南大学湘雅二医院儿童晕厥专科门诊就诊、并诊断为POTS的4~17岁儿童青少年的临床资料。POTS组127例,男63例,女64例,平均年龄(11.31±2.53)岁。将同期在该院儿童保健专科门诊进行健康检查的127例7~17岁儿童青少年作为对照组,男64例,女63例,平均年龄(11.60±3.27)岁。测量两组儿童身长、体质量,计算BMI。采用SPSS22.0软件进行数据统计分析。结果(1)病程和晕厥频次:POTS组病程为(8.13±13.76)个月,晕厥频次为(1.45±4.43)次。(2)BMI组间比较:POTS组与对照组比较,年龄、身长、体质量差异无统计学意义(P>0.05),BMI明显降低[(17.32±2.65)kg/m^2vs.(18.17±2.42)kg/m^2,t=2.655,P<0.01]。(3)BMI分类:体质量过低在POTS组(69.29%,88/127)高于对照组(56.69%,72/127),体质量正常在POTS组(29.13%,37/127)低于对照组(41.73%,53/127),组间比较χ^2=4.444,P<0.05。结论儿童青少年POTS组BMI明显降低,且女性低于男性。

Objective To discuss the relationship between body mass index and postural tachycardia syndrome in children and adolescents.Methods The clinical data of 127 children and adolescents were retrospectively analyzed,who were diagnosed with postural tachycardia syndrome(POTS)in the Department of Pediatric Cardiovasology,Children’s Medical Center,the Second Xiangya Hospital,Central South University,from August 2009 to June 2018,which included 63 males and 64 females and their ages were from 4 to 17 years old(mean age 11.31±2.53)(POTS group).A total of 107 healthy children and adolescents including 64 males and 63 females were included as the control group,who had a health examination in the health care clinic in the hospital during the same period(aged 7 to 17,with a mean age of 11.60±3.27).Body length and body mass were measured and body mass index(BMI)calculated.Statistical analysis was conducted with SPSS 22.0 software.Results (1)Duration and frequency of syncope:the duration of syncope was(8.13± 13.76)months in POTS group and the frequency of syncope was(1.45±4.43)times.(2)BMI intergroup comparison: comparing POTS group with control group,there was no difference in age,length or body mass(P>0.05),and BMI was significantly lower[(17.32 ± 2.65)kg/m^2 vs.(18.17 ± 2.42)kg/m^2,t=2.655,P<0.01]in POTS group.(3)BMI classification:low body mass was higher in POTS group(69.29%,88/127)than in control group(56.69%,72/127);normal body mass was lower in POTS group(29.13%,37/127)than in control group(41.73%,53/127),χ^2=4.444,P< 0.05.Conclusion BMI of POTS group decreases significantly in children and adolescents,and it is lower in girls than in boys.