Effect of mechanical behaviour of the brachial artery on blood pressure measurement during both cuff inflation and cuff deflation
Effect of mechanical behaviour of the brachial artery on blood pressure measurement during both cuff inflation and cuff deflation
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DOI：
10.1097/mbp.0b013e3283651d55
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发表时间：
2013-10-01
影响因子：
1.3
通讯作者：
Murray, Alan
中科院分区：
文献类型：
--
作者：
Zheng, Dingchang;Pan, Fan;Murray, Alan
本研究的目的是调查不同的机械行为的肱动脉血压（BP）测量袖带充气和deflation.MethodsBP测量的影响，从每一个40名参与者，三个重复会议下三个随机袖带放气/充气条件。袖带压力以2-3 mmHg/s的标准速率线性放气和充气，也以5-6 mmHg/s的快速速率线性充气。测量手动听诊收缩压、舒张压和脉压（SBP、DBP、PP）。通过将多项式模型拟合到示波脉搏幅度，根据数字记录的袖带压力确定自动血压。从袖带放气和充气的BP，然后compared.ResultsRepeatable测量会话之间和充气/放气条件（所有P > 0.1）的顺序之间表示动脉机械行为的稳定性与重复测量。比较标准充盈和标准回缩获得的血压，手动SBP低2.6 mmHg手动DBP升高1.5mmHg（P <0.01），手动PP降低4.2mmHg（P <0.001），自动DBP升高6.7mmHg（P <0.001），自动PP降低7.5mmHg（P < 0.001）。快速和标准袖带充气之间的任何自动BP均无统计学显著差异。充气和放气之间的统计学显着的BP差异表明不同的动脉机械行为之间的动脉开放和关闭在BP measurement.ConclusionWe表明，机械行为的肱动脉在BP测量不同的袖带放气和袖带充气。
ObjectiveThe aim of this study was to investigate the effect of different mechanical behaviour of the brachial artery on blood pressure (BP) measurements during cuff inflation and deflation.MethodsBP measurements were taken from each of 40 participants, with three repeat sessions under three randomized cuff deflation/inflation conditions. Cuff pressure was linearly deflated and inflated at a standard rate of 2-3 mmHg/s and also linearly inflated at a fast rate of 5-6 mmHg/s. Manual auscultatory systolic and diastolic BPs, and pulse pressure (SBP, DBP, PP) were measured. Automated BPs were determined from digitally recorded cuff pressures by fitting a polynomial model to the oscillometric pulse amplitudes. The BPs from cuff deflation and inflation were then compared.ResultsRepeatable measurements between sessions and between the sequential order of inflation/deflation conditions (all P > 0.1) indicated stability of arterial mechanical behaviour with repeat measurements. Comparing BPs obtained by standard inflation with those from standard deflation, manual SBP was 2.6 mmHg lower (P < 0.01), manual DBP was 1.5 mmHg higher (P < 0.01), manual PP was 4.2 mmHg lower (P < 0.001), automated DBP was 6.7 mmHg higher (P < 0.001) and automatic PP was 7.5 mmHg lower (P < 0.001). There was no statistically significant difference for any automated BPs between fast and standard cuff inflation. The statistically significant BP differences between inflation and deflation suggest different arterial mechanical behaviour between arterial opening and closing during BP measurement.ConclusionWe have shown that the mechanical behaviour of the brachial artery during BP measurement differs between cuff deflation and cuff inflation.