Lee B Y, Campbell J S, Berkowitz P
Department of Veterans Affairs Medical Center, Castle Point, NY 12511, USA.
J Vasc Surg. 1996 Jan;23(1):116-22. doi: 10.1016/s0741-5214(05)80041-2.
This study was designed to evaluate the accuracy and failure rates of automatically collected oscillometric ankle systolic pressures (Psys) and pulse volumes (Pvol) using a new algorithm as compared with Psys obtained by standard manual Doppler-and-cuff technique.
One hundred ten consecutive patients at a vascular laboratory had brachial and ankle Psys measured with the two methods. Pvol at or near the mean arterial pressure was also obtained automatically by the oscillometric device.
Both methods showed a 6.6% failure rate when measuring Psys at the ankle. Oscillometric Psys measurement was possible when Doppler Psys failed as a result of nonoccluding arteries. No difference was found between the two methods in occluding limbs with ankle-brachial indexes of 1.30 or more. Sequential brachial Psys values had a mean difference (Doppler-oscillometric) or 2 +/- 10.9 mm Hg and a correlation coefficient (r) of 0.92. Measurements at the ankle had a mean difference of -8.4 +/- 16.8 mm Hg and r = 0.90. These differences were not statistically significant. Mean arterial pressure Pvol recorded at the ankle also correlated with ankle Doppler Psys (r = 0.71) and showed a 1.9% failure rate.
Both automatic oscillometric plethysmographic Psys and Pvol at the ankle are shown to correlate well with Doppler-and-cuff Psys in patients with vascular disease. Oscillometric measurements can replace Doppler measurements in most clinical situations.
本研究旨在评估使用一种新算法自动收集的示波法踝部收缩压（Psys）和脉搏容积（Pvol）与通过标准手动多普勒袖带技术获得的Psys相比的准确性和失败率。
血管实验室的110例连续患者用这两种方法测量肱动脉和踝部的Psys。示波装置还自动获取平均动脉压处或其附近的Pvol。
两种方法在测量踝部Psys时失败率均为6.6%。当由于动脉未闭塞导致多普勒Psys测量失败时，示波法Psys测量仍可行。在踝臂指数为1.30或更高的闭塞肢体中，两种方法之间未发现差异。连续的肱动脉Psys值平均差异（多普勒 - 示波法）为2±10.9 mmHg，相关系数（r）为0.92。踝部测量的平均差异为 -8.4±16.8 mmHg，r = 0.90。这些差异无统计学意义。踝部记录的平均动脉压Pvol也与踝部多普勒Psys相关（r = 0.71），失败率为1.9%。
在血管疾病患者中，自动示波体积描记法测量的踝部Psys和Pvol均与多普勒袖带法Psys具有良好的相关性。在大多数临床情况下，示波法测量可替代多普勒测量。
