Liebl Max, Holzgreve Heinrich, Schulz Mathias, Crispin Alexander, Bogner Johannes
Medizinische Poliklinik-Innenstadt, Klinikum der Ludwig-Maximilians-Universität, Munich, Germany.
Blood Press. 2004;13(5):279-82. doi: 10.1080/08037050410016465.
We determined the effect of wearing clothes under the manometer's cuff on blood pressure in manual auscultatory sphygmomanometric and automatic oscillometric blood pressure measurement.
Two hundred and one subjects were examined with the auscultatory sphygmomanometric and the automatic oscillometric method, each with and without sleeved arm in random order. The auscultatory readings were blinded for the subjects' state of clothing. Common shirts and sweaters (thinner than 2 mm) were used.
Based on confidence intervals of the differences between sleeved and non-sleeved arm measurements and equivalence test, sleeves did not lead to statistically significant effects. Measurements with and without sleeve can be accepted equal within an a priori defined interval of equivalence of +/-4 mmHg.
This study shows that measuring blood pressure with the manometer's cuff over the subject's sleeve does not differ significantly from non-sleeved arm measurements. This is true for a sample that includes normotensive as well as hypertensive persons with a wide age range. For clinical practice, the not significant mean differences of 0.5-1.1 mmHg are interpreted as not relevant. In this study with a statistical power to find a difference of 4 mmHg, blood pressure measurements were found to be equivalent with and without clothes thinner than 2 mm.
我们确定了在手动听诊式血压计和自动振荡式血压测量中，在血压计袖带下穿着衣服对血压的影响。
对201名受试者分别采用听诊式血压计和自动振荡式血压测量方法进行检查，每种方法均在有袖带和无袖带的情况下随机进行。听诊读数对受试者的着装状态是盲态的。使用的是普通衬衫和毛衣（厚度小于2毫米）。
根据有袖带和无袖带测量之间差异的置信区间以及等效性检验，袖带并未产生统计学上的显著影响。在预先定义的等效区间±4 mmHg内，可以认为有袖带和无袖带的测量结果相等。
本研究表明，在受试者袖子上方使用血压计袖带测量血压与无袖带测量并无显著差异。对于包括不同年龄段的血压正常者和高血压患者的样本来说都是如此。在临床实践中，0.5 - 1.1 mmHg的不显著平均差异被认为是无关紧要的。在本研究中，具有发现4 mmHg差异的统计效力，发现穿着厚度小于2毫米的衣服时和不穿衣服时的血压测量结果是等效的。
