Stolt M, Sjönell G, Aström H, Hansson L
Department of Development of Primary Health Care, Stockholm County Council West, Sweden.
Am J Hypertens. 1990 Sep;3(9):697-703. doi: 10.1093/ajh/3.9.697.
In 48 individuals with a wide range of arm circumferences blood pressure measured indirectly with two different cuffs was compared to direct intraarterial measurements. The two cuffs were a standard size cuff (12 X 35 cm) and a newly developed cuff, containing three rubber bags of different sizes, which automatically selects the appropriately sized bag in relation to arm circumference (Tricuff, Pressure Group AB, Sweden). The Tricuff correctly placed 42 of the 43 patients in the "normotensive" range, ie, diastolic blood pressure less than 90 mm Hg, whereas the standard cuff put only 33 of 44 patients in this range (P less than .005). The discrepancy was not only due to the expected better performance in patients with obese arms, but also in the subgroup of patients with arms in the range 22 to 31 cm, in which group both cuffs would measure blood pressure with a 12 cm wide rubber bag. The number of correctly identified "normotensive" patients was noticeably higher with the Tricuff than with the standard cuff (30/31 v 25/32, P = .053). The better specificity of the new cuff thus offers an improvement over the standard cuff. There are several potential clinical advantages of this, mainly that the risk of erroneously labelling normotensive individuals as hypertensive is reduced.
在48名臂围范围广泛的个体中，将使用两种不同袖带间接测量的血压与直接动脉内测量的血压进行了比较。这两种袖带分别是标准尺寸袖带（12×35厘米）和新开发的袖带，后者包含三个不同尺寸的橡胶袋，可根据臂围自动选择尺寸合适的袋子（Tricuff，瑞典压力集团AB公司）。Tricuff将43名患者中的42名正确归类到“血压正常”范围，即舒张压低于90毫米汞柱，而标准袖带仅将44名患者中的33名归为此范围（P<0.005）。这种差异不仅是由于肥胖手臂患者预期表现更好，在臂围22至31厘米的患者亚组中也是如此，在该亚组中两种袖带均使用12厘米宽的橡胶袋测量血压。Tricuff正确识别出的“血压正常”患者数量明显高于标准袖带（30/31对25/32，P = 0.053）。因此，新袖带具有更好的特异性，相比标准袖带有所改进。这具有几个潜在的临床优势，主要是降低了将血压正常个体错误标记为高血压患者的风险。
