Tochikubo O, Minamisawa K, Miyajima E, Ishii M, Yanaga A, Yukinari Y
Second Department of Internal Medicine, School of Medicine, Yokohama City University, Japan.
Jpn Heart J. 1988 May;29(3):257-69. doi: 10.1536/ihj.29.257.
A new portable noninvasive recorder (4 X 6.5 X 14 cm in size, 390 g in weight) was developed for monitoring 24-hour blood pressure and its clinical applicability was investigated. Employing an ordinary-size cuff, this is the lightest and the most compact apparatus of its kind ever developed. It is powered by a rechargeable battery. The cuff is pressurized by a miniature, low-noise, rotary micropump. To eliminate noises resulting from body motion, two microphones are used to distinguish Korotkoff sounds. Systolic blood pressure (SBP), diastolic blood pressure (DBP), and heart rate (HR) are measured automatically at intervals of 1 to 60 min throughout 24 hours. These data can be stored as many as 600 times in the recorder's semiconductor memory. After measurement, mean values; standard deviations (SD); and trendograms of SBP, DBP, and HR are printed out by means of an appurtenant, miniature analyzer measuring 5 X 7.5 X 15 cm. A comparison of values obtained with this new instrument and the values obtained with a conventional auscultatory method showed average errors of -1.2 +/- 4.7 (SD)mmHg for SBP and -2.7 +/- 5.0 mmHg for DBP. The correlation coefficient (r) of values obtained by two methods was r = 0.99 for SBP and r = 0.96 for DBP (n = 185). In 38 male and 31 female normotensive subjects (average casual BP: male 126 +/- 11/76 +/- 7 mmHg; female 116 +/- 13/69 +/- 10 mmHg), average 24-hour BP values recorded by the new recorder were 115 +/- 7.5 (SBP)/70 +/- 6 (DBP)mmHg for the males and 106 +/- 6/63 +/- 5 mmHg for the females. The new recorder seems to be convenient, easy to operate, and clinically useful in ambulatory monitoring.
我们研发了一种新型便携式无创记录仪（尺寸为4×6.5×14厘米，重量为390克）用于监测24小时血压，并对其临床适用性进行了研究。该记录仪采用普通尺寸的袖带，是同类产品中最轻、最紧凑的设备。它由可充电电池供电。袖带由一个微型、低噪音的旋转微型泵加压。为了消除身体运动产生的噪音，使用了两个麦克风来辨别柯氏音。收缩压（SBP）、舒张压（DBP）和心率（HR）在24小时内每隔1至60分钟自动测量一次。这些数据可以在记录仪的半导体存储器中存储多达600次。测量后，通过一个尺寸为5×7.5×15厘米的附属微型分析仪打印出SBP、DBP和HR的平均值、标准差（SD）以及趋势图。将用这种新仪器获得的值与用传统听诊法获得的值进行比较，结果显示SBP的平均误差为-1.2±4.7（SD）mmHg，DBP的平均误差为-2.7±5.0 mmHg。两种方法获得的值的相关系数（r），SBP为r = 0.99，DBP为r = 0.96（n = 185）。在38名男性和31名女性血压正常的受试者中（平均随机血压：男性为126±11/76±7 mmHg；女性为116±13/69±10 mmHg），新记录仪记录的24小时平均血压值，男性为115±7.5（SBP）/70±6（DBP）mmHg，女性为106±6/63±5 mmHg。这种新记录仪在动态监测中似乎方便、易于操作且具有临床实用性。
