Clinical and Experimental Pediatrics

The Korean Pediatric Society (대한소아청소년과학회)
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Pulse wave velocity and ankle brachial index in adolescents with essential hypertension

본태성 고혈압 청소년에서 pulse wave velocity와 ankle brachial index에 대한 연구

  • Joo, Sun Young (Department of Pediatrics, College of Medicine, Ewha Womans University) ;
  • Cho, Ki Young (Department of Pediatrics, College of Medicine, Ewha Womans University) ;
  • Cho, Su Jin (Department of Pediatrics, College of Medicine, Ewha Womans University) ;
  • Hong, Young Mi (Department of Pediatrics, College of Medicine, Ewha Womans University)
  • 주선영 (이화여자대학교 의과대학 동대문병원 소아과) ;
  • 조기영 (이화여자대학교 의과대학 동대문병원 소아과) ;
  • 조수진 (이화여자대학교 의과대학 동대문병원 소아과) ;
  • 홍영미 (이화여자대학교 의과대학 동대문병원 소아과)
  • Received : 2006.03.21
  • Accepted : 2006.05.03
  • Published : 2006.07.15
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Abstract

Purpose : Pulse wave velocity(PWV) and ankle brachial index(ABI) are not only noninvasive methods used to assess arterial stiffness in adults, but also useful, simple ways to estimate the severity of hypertension, end stage renal disease and atherosclerosis in adults. But there are few studies on PWV and ABI in adolescents and children. In this study, hypertensive adolescents were compared to normal individuals to find out the usefulness of PWV as the index of progress in the disease. Methods : 413 teenagers were divided into three groups. The first group consisted of adolescents that only had hypertension(Group 1 : 23 teenagers). The second group consisted of the adolescents who had hypertension with obesity(Group 2 : 17 teenagers), and the last group was the normal subjects(Group 3 : 328 teenagers). Weight, height and body mass index were measured. Simultaneous measurements of systolic, diastolic and average blood pressure were obtained from the four extremities. PWV, ABI, ejection time and preejection period were also measured. Results : Right brachial-ankle PWV was significantly higher in both group 1 and group 2 compared with group 3, and significantly higher in group 2 compared with group 1. Likewise, left brachial-ankle PWV also showed significantly higher values in both group 1 and group 2 compared with group 3, and also higher values in group 2 compared with group 1. Positive correlations were found between the systolic, diastolic, average blood pressure and PWV. There were also positive correlations between the blood pressure and weight, body mass index. Conclusion : Higher PWV was demonstrated in adolescents with essential hypertension compared to normal subjects. Follow-up study is needed to evaluate the progress.

목 적 : 성인에서 PWV와 ABI는 동맥 경직을 측정할 수 있는 비침습적 방법으로 성인에서 고혈압, 말기 신장병, 동맥경화증의 정도를 평가할 수 있는 유용하고 간단한 방법으로 알려져 있다. 그러나 소아를 비롯한 청소년에서의 연구는 많지 않은 실정이다. 동맥경화증을 포함한 혈관의 변화가 무증상의 상태로 어린 나이에 시작해서 진행되기 때문에 청소년 고혈압, 비만 환자에서 동맥 경직의 평가가 절실하게 필요하다. 본 연구에서는 고혈압 청소년을 정상 청소년과 비교함으로 청소년에서 PWV의 유용성을 평가하고자 하였다. 방 법 : 15-16세의 청소년 413명을 고혈압군(1군 : 23명), 고혈압과 비만이 같이 있는군(2군 : 17명), 정상 대조군(3군 : 328명) 3개의 군으로 나누었다. 신장, 체중, 체질량지수를 측정하였고, Colin사의 VP-1000을 이용하여 사지의 수축기, 이완기, 평균 혈압과 양측 PWV, ABI, ET, PEP를 측정하여 비교분석 하였다. 결 과 : 우측 상완과 발목 사이의 PWV(RbaPWV)는 1군($1,186.4{\pm}134.9cm/sec$)과 2군($1,214.4{\pm}45.8cm/sec$) 모두에서 3군($939.1{\pm}84.3cm/sec$)에 비해 유의하게 높았으며(P<0.05), 2군에서 1군에 비해 유의하게 높았다(P<0.05). 좌측 상완과 발목사이의 PWV(LbaPWV) 또한 1군($1,198.4{\pm}99.8cm/sec$)과 2군($1,219.7{\pm}43.2cm/sec$) 모두에서 3군($942.1{\pm}75.8cm/sec$)에 비해 유의하게 높았으며(P<0.05), 2군에서 1군에 비해 유의하게 높았다(P<0.05). PEP/ET는 각 군 사이에 유의한 차이가 없었다. 사지의 수축기, 이완기, 평균 혈압과 PWV는 유의한 양의 상관 관계가 있었다. 사지의 수축기, 이완기, 평균 혈압은 모두 체중, 체질량지수와 유의한 양의 상관 관계가 있었으며 ABI는 체중, 체질량지수 어느 것과도 유의한 상관 관계가 없었다. 결 론 : 본태성 고혈압 청소년에서 정상 청소년에 비해 PWV가 높게 측정되었으므로 예후를 평가하기 위해서 추적 관찰이 필요하다.

Keywords

References

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