Effect of respiration on Korotkoff sounds and oscillometric cuff pressure pulses during blood pressure measurement.
Effect of respiration on Korotkoff sounds and oscillometric cuff pressure pulses during blood pressure measurement.
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DOI：
10.1007/s11517-014-1150-1
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发表时间：
2014-05
影响因子：
3.2
通讯作者：
Murray, Alan
中科院分区：
文献类型：
--
作者：
Zheng, Dingchang;Di Marco, Luigi Yuri;Murray, Alan
血压（BP）测量精度取决于用于手动测量的柯氏音（KorS）和用于自动测量的血压计脉冲的一致变化，然而关于呼吸对这些生理信号的直接影响知之甚少。本研究的目的是定量评估呼吸对柯氏音和脉搏波的调制作用。手动测量30名健康受试者（年龄41 ± 12岁）的收缩压和舒张压。研究了两种呼吸频率下的三种静态袖带压力条件。记录袖带压力[使用心率计脉冲（OscP）]、ECG、胸部运动呼吸[呼吸信号（Resp），来自磁力计]和柯氏音（KorS，来自数字听诊器）两次，持续20 s。生理数据被均匀地重新采样。根据峰谱频率的Resp（fR）、OscP（fO）和KorS（fK）计算呼吸频率。fR与fO或fK之间无统计学显著差异。在所有受试者中观察到呼吸调节。OscP幅度调制在两种呼吸频率之间（p < 0.05）和三种袖带压力之间（p < 0.0001）有显著变化，并且随着袖带压力的降低而显著降低（p < 0.05）。Resp和OscP调制之间的相移在呼吸频率方面具有统计学显著性（p < 0.05），但在袖带压力方面不具有统计学显著性。人们普遍认为，BP在个人是可变的，这与呼吸，我们现在表明，这种呼吸调制血压计脉冲和Korotkoff声音的幅度从BP测量。
Blood pressure (BP) measurement accuracy depends on consistent changes in Korotkoff sounds (KorS) for manual measurement and oscillometric pulses for automated measurement, yet little is known about the direct effect of respiration on these physiological signals. The aim of this research was to quantitatively assess the modulation effect of respiration on Korotkoff sounds and oscillometric pulses. Systolic and diastolic blood pressures were measured manually from 30 healthy subjects (age 41 ± 12 years). Three static cuff pressure conditions were studied for two respiratory rates. Cuff pressure [with oscillometric pulses (OscP)], ECG, chest motion respiration [respiration signal (Resp), from magnetometer] and Korotkoff sounds (KorS, from digital stethoscope) were recorded twice for 20 s. The physiological data were evenly resampled. Respiratory frequency was calculated from Resp (fR), OscP (fO) and KorS (fK) from peak spectral frequency. There was no statistically significant difference between fR and fO or fK. Respiratory modulation was observed in all subjects. OscP amplitude modulation changed significantly between the two respiratory rates (p < 0.05) and between the three cuff pressures (p < 0.0001), and decreased significantly with decreasing cuff pressure (p < 0.05). The phase shift between Resp and modulation of OscP was statistically significant with respiratory rates (p < 0.05), but not with cuff pressures. It is accepted that BP in individuals is variable and that this relates to respiration; we now show that this respiration modulates oscillometric pulse and Korotkoff sound amplitudes from which BP is measured.
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影响因子：
--
作者：
CHUNGCHAROEN, D
通讯作者：
CHUNGCHAROEN, D
DOI：
10.1152/ajpheart.1995.268.4.h1688
发表时间：
1995-04-01
影响因子：
4.8
作者：
BLABER, AP;YAMAMOTO, Y;HUGHSON, RL
通讯作者：
HUGHSON, RL
影响因子：
6
作者：
WEISE, F;LONDON, GM;ELGHOZI, JL
通讯作者：
ELGHOZI, JL
影响因子：
4.6
作者：
PAN, J;TOMPKINS, WJ
通讯作者：
TOMPKINS, WJ
影响因子：
5.8
作者：
Bowers, EJ;Murray, A
通讯作者：
Murray, A