Continuous, Real-Time, Noninvasive Monitor of Blood Pressure: Peňaz Methodology Applied to the Finger
Continuous, Real-Time, Noninvasive Monitor of Blood Pressure: Peňaz Methodology Applied to the Finger
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连续、实时、无创血压监测：Peňaz 方法应用于手指
DOI：
10.1007/bf03337384
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
R. Boehmer
中科院分区：
文献类型：
--
作者：
R. Boehmer
手指血压监测器通过J. Petencies az.当动脉的内部压力（动脉压）等于外部压力时，测量动脉的大小。(At在这一点上，跨壁压等于零，动脉壁被称为“无负荷”。通过对动脉上的外部压力的连续自动调节来维持这种无负荷状态，所述调节与动脉内压力变化同时且平行地进行。然后，外部压力恒定地等于内部压力（动脉血压），并且由监测器报告为收缩压、平均压和舒张压的值。使用带有内置光源和检测器的指套测量手指动脉大小，并使用可充气气囊向动脉施加外部压力。该监测器基于微处理器;算法大约每分钟确定一次无负荷动脉尺寸，并自动校正可能由平滑肌收缩或松弛引起的变化，高速电动气动伺服控制系统可实现自动校准和调整。
The finger blood pressure monitor measures blood pressure continuously and noninvasively by means of a technique described by J. Peňaz. The size of the artery is measured when its internal pressure (arterial pressure) equals the external pressure. (At this point, transmural pressure equals zero and the arterial wall is said to be “unloaded.”) This unloaded condition is maintained by continuous, automatic adjustments of external pressure on the artery, adjustments that are made simultaneously with and parallel to intraarterial pressure variations. The external pressure then constantly equals internal pressure (arterial blood pressure) and is reported by the monitor as values for systolic, mean, and diastolic pressure. A finger cuff with a built-in light source and detector is used to measure finger artery size, and an inflatable bladder is used to apply the external pressure to the artery. The monitor is microprocessor based; algorithms determine the unloaded artery size approximately every minute and automatically correct for changes possibly induced by smooth muscle contraction or relaxation, and a high-speed electropneumatic servo control system enables automatic calibration and adjustment.