Changes in body mass index of postural tachycardia syndrome in children and adolescents / 中国实用儿科杂志

ABSTRACT

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 included63 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 of11.60±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 syncopethe 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 comparisoncomparing 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 classificationlow 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.