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Journal of the Korean Academy of Family Medicine 2003;24(2):166-171.
Published online February 10, 2003.
Blood Pressure Difference between Right and Left Arms of Some College Freshmen.
Ha Jin Kim, Chang Won Won, Eun Suk Ann, Jung Ju Jung, Byung Sung Kim, Hyun Rim Choi
Department of Family Medicine, Kyung Hee University Medical College Hospital, Korea. chunwon@khmc.or.kr
일부 대학 신입생을 대상으로 양팔에서 측정한 혈압의 차이
김하진,원장원,안은숙,정정주,김병성,최현림
경희의료원 가정의학과
Abstract
Background
: Hypertension is a main cause of heart blood vessel disease. To diagnose and treat hypertension, it is necessary to measure blood pressure accurately. There are various factors that influence blood pressure. According to real clinical demonstrators and some recent studies, blood pressure differences between right and left arms are often observed. This study was intended to know whether the differences are really found and wheather the correlation exists between mid-arm circumferences and the blood pressure differences according to right-handed or left-handed which were considered as an important factor in affecting blood pressures.

Methods : One hundred sixty nine college freshmen of year 2001 were chosen. Among them, 103 were right- handed and 66 left-handed. Which arms to be checked first were determined randomly. This sequence was repeated two times on each person. Their mid-arm circumferences were measured, also.

Results : For right-handed persons, systolic blood pressure in right arm (119.2±12.3 mmHg) was significantly higher than in left arm (118.0±12.0 mmHg) (P<0.005). But diastolic blood pressure differences between right arm (75.3±10.0 mmHg) and left arm (75.0±9.5 mmHg) was not significant statistically. For left-handed persons, systolic blood pressure was 120.3±9.9 mmHg in right arm and 120.0±10.3 mmHg in left arm. However, diastolic blood pressure in right arm (76.7±9.4 mmHg) was significantly higher than in left arm (75.0±8.6 mmHg) (P<0.005). For right handed persons, their arm circumferences (26.2±2.8 cm) were significantly thicker than left ones (25.9±2.9 cm). For left-handed, left arm circumference (25.9±2.7 cm) was significantly thicker than right one (25.5±2.6 cm). As for the blood pressure difference in arm tested order, the first measured systolic blood pressure (right arm; 120.9±11.7 mmHg, left arm; 120.0±11.9 mmHg) was significantly higher than the second measured one (right arm; 118.3±11.8 mmHg, left arm; 117.8±11.6 mmHg) (P<0.005). However, the first measured diastolic blood pressure (right arm; 76.3±10.5 mmHg, left arm; 75.5±9.4 mmHg) did not have more significance than the second measured one (right arm; 75.4±9.9 mmHg, left arm; 74.6±10.8 mmHg).

Conclusion : The right-handed person's blood pressure was higher in the right arm, but for the left-handed persons it was not significantly different in both arms. The second measurement of blood pressure was lower than the first measurement in both arms. The arm circumference depending on the right/left-handedness influenced the blood pressure, but clear correlation between them was not observed. Therefore, if possible, when the blood pressure is measured, it is advised to check blood pressure in both arms before diagnosing hypertension.
Key Words: blood pressure difference, right/left-handedness, arm circumference
초록
연구배경 : 고혈압은 심혈관 질환의 주요 위험인자로서 고혈압의 진단 및 치료를 위해서 정확한 혈압의 측정이 필요하다. 혈압에 영향을 미치는 요소는 다양하며 실제의 임상과 최근의 연구에서 보면 양쪽팔의 혈압 차이가 있는 경우가 많아, 차이가 존재하는지 여부와 영향을 미치는 요소 중 중요하다고 생각되는 왼손/오른손잡이 여부에 따른 혈압의 차이와 팔의 둘레 간의 상관관계가 있는지를 알아보고자 하였다.

방법 : 2001년 2월 대학신입생 신체검사 중 169명을 대상으로 오른손잡이 103명, 왼손잡이 66명의 혈압을 왼쪽/오른쪽 순서를 무작위로 각각 2회씩 측정하였고 각각의 팔둘레도 함께 측정하였다.

결과 : 오른손잡이의 수축기 혈압은 오른팔이 119.2±12.3 mmHg으로, 왼팔의 118.0±12.0 mmHg보다 통계적으로 유의하게 높게 측정되었으며(P<0.005) 이완기 혈압은 오른팔이 75.3±10.0 mmHg, 왼팔이 75.0±9.5 mmHg으로 통계적으로 유의하지는 않았다. 왼손잡이에서는 수축기 혈압이 오른팔 120.3±9.9 mmHg, 왼팔 120.0±10.3 mmHg이었고, 이완기 혈압이 오른팔에서 76.7±9.4 mmHg, 왼팔에서 75.0±8.6 mmHg으로 오히려 오른팔에서 유의하게 높게 측정되었다(P<0.005). 팔둘레는 오른손잡이에서 오른팔이 26.2±2.8 cm, 왼팔이 25.9±2.9 cm로 오른팔이 유의하게 두꺼웠으며 왼손잡이에서도 오른팔이 25.5±2.6 cm, 왼팔이 25.9±2.7 cm로 유의하게 왼팔이 두꺼웠다. 순서측정에 따른 혈압의 차이는 수축기 혈압에서 첫 번째 측정한 혈압이(오른팔: 120,9±11.7 mmHg, 왼팔; 120.0±11.9 mmHg) 두 번째 측정한 혈압(오른팔: 118.3±11.8 mmHg 왼팔이 117.8±11.6 mmHg)보다 유의하게 높았다(P<0.005). 이완기 혈압은 첫 번째 측정한 혈압(오른팔: 76.3±10.5 mmHg, 왼팔: 75.5±9.4 mmHg)이 두 번째 측정한 혈압(오른팔: 75.4±9.9 mmHg, 왼팔: 74.6±10.8 mmHg)보다 유의하지 않았다.

결론 : 손잡이에 따른 혈압의 차이는 오른손잡이에서 오른손이 더 높게 측정되었고 왼손잡이에서는 차이를 보이지 않았다. 양팔 모두 처음 측정한 혈압보다는 두 번째 측정한 혈압이 낮았다. 손잡이에 따른 팔둘레가 혈압에 영향을 미치는 것으로 생각되나 뚜렷한 연관성은 알 수 없다. 따라서 혈압의 측정 시 가능하면 양쪽팔의 혈압을 모두 측정하는 것이 고혈압의 진단과 평가에 도움이 되리라 생각된다.
중심 단어: 혈압차이, 왼손/오른손잡이, 팔둘레


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