Intra-arterial blood pressure was compared with simultaneous auscultatory measurements in 37 subjects with a wide range of blood pressures and arm circumferences; six cuffs of various lengths and widths were used. Nineteen subjects had an arm circumference of 34 cm or more (mean 40 cm) and the other 18 were considered to be non-obese and had a mean arm circumference of 30 cm. With each larger cuff, in terms of bladder surface area, auscultatory blood pressure decreased a few mm relative to intra-arterial pressure both for systolic and for diastolic measurements. Apart from diastolic pressure measured with the two 12 cm wide cuffs (12 X 23 cm, 12 X 30 cm) in the obese group all other auscultatory measurements differed less than 5% from intra-arterial pressure, albeit with considerable variability among the subjects. The differences in error among measurements with the four largest cuffs in the obese group (13 X 30 cm, 14 X 30 cm, 14 X 38 cm, and a conical cuff) were clinically irrelevant, and there was even less to choose among all six cuffs in the non-obese subjects. These results suggest that auscultatory blood pressure may be measured with acceptable accuracy with a single long bladdered cuff both in subjects with large arms and in subjects with normal sized arms.
展开▼
机译:在37位血压和臂围范围较大的受试者中,将动脉内血压与同时进行的听诊测量进行了比较;使用了六个不同长度和宽度的袖口。 19名受试者的手臂周长为34厘米或以上(平均40厘米),其他18名被认为是非肥胖的,平均手臂周长为30厘米。对于每个较大的袖带,就收缩压和舒张压而言,相对于动脉内压而言,听诊血压均降低了几毫米。除了在肥胖组中用两个12 cm宽的袖带(12 X 23 cm,12 X 30 cm)测量舒张压外,所有其他听诊测量值与动脉内压的差异均小于5%,尽管受试者之间差异很大。肥胖组中四个最大袖带(13 X 30 cm,14 X 30 cm,14 X 38 cm和一个圆锥形袖带)的测量值之间的误差差异在临床上无关紧要,在这六个袖带中选择的更少非肥胖受试者的袖口。这些结果表明,在双臂较大的受试者和双臂正常大小的受试者中,可以用单个长囊袖带以一个可接受的精度测量听诊血压。
展开▼