Continuous non-invasive blood pressure monitoring: reliability of Finapres device during the Valsalva manoeuvre.
Continuous non-invasive blood pressure monitoring: reliability of Finapres device during the Valsalva manoeuvre.
复制标题
连续无创血压监测：Valsalva 动作期间 Finapres 装置的可靠性。
作者：
B. Imholz;G. A. Montfrans;J. Settels;G. Hoeven;J. Karemaker;W. Wieling
由于动脉内血压监测的固有风险，一种新的非侵入性设备Finapres在14名高血压患者和1名正常血压受试者中进行了评估。Finapres可以在手指上连续测量血压。在控制期和随后的Valsalva动作中比较了臂部动脉内压和手指内压。在视觉上，Finapres测量的血压忠实地再现了所有受试者的动脉内记录。从每一次压力信号逐次获得收缩压、舒张压、平均压及其差值，并分析反应的时程及其特征。在控制期内，Finapres测量值低于动脉内收缩压、平均压和舒张压(平均(SD)分别为1(9.6)、9(6.8)和4(6.1)mm Hg)。在对Valsalva动作的反应中，臂指压力差与控制期的偏差很小；中位数差异最多出现在胸腔内张力期晚期的6 mm Hg和释放后血压超调期的7 mm Hg。总体而言，Finapres设备忠实地再现了动脉内的模式。该设备似乎为动脉内血压监测提供了一种可靠的替代方案。
Because of the inherent risks of intra-arterial blood pressure monitoring a new non-invasive device, Finapres, which measures blood pressure continuously in the finger, was evaluated in 14 hypertensive and one normotensive subject. Brachial intra-arterial and finger pressures were compared during a control period and a subsequent Valsalva manoeuvre. Visually, blood pressures measured by Finapres faithfully reproduced the intra-arterial recordings in all subjects. From each pressure signal beat to beat systolic, diastolic, and mean blood pressure values and their differences were obtained and the time course of the response and its characteristic features were analysed. During the control period the Finapres measurements were lower than intra-arterial systolic, mean, and diastolic pressures (mean(SD) 1(9.6), 9(6.8), and 4(6.1) mmHg respectively). During the response to the Valsalva manoeuvre the brachial-finger pressure differences showed limited deviation from those during the control period; median differences were at most 6 mmHg occurring late during the intrathoracic strain period and 7 mmHg during the post-release blood pressure overshoot. In general, the Finapres device reproduced intra-arterial patterns faithfully. This device appears to offer a reliable alternative to intra-arterial blood pressure monitoring.