PMID: 8447568Jan 1, 1993Paper

Does the photoplethysmographic technique show an improvement in the measurement of the indirect blood pressure in intensive care patients?

Der Anaesthesist
G PapadopoulosStephan Mieke

Abstract

In the present report we investigated whether oscillometric and plethysmographic arterial blood pressure measurement techniques yielded different results compared to invasive blood pressure measurements in 18 mechanically ventilated and 14 spontaneously breathing patients. METHODS. Blood pressure was recorded simultaneously with plethysmographic, oscillometric, and invasive systems (FINAPRES 2300, HP 78352A, and 78534A, respectively). Invasive measurements were obtained in the radial artery. Short tubing was chosen in order to avoid transmission errors. The finger cuff of the FINAPRES 2300 was placed on the ipsilateral middle phalanx of the middle finger. The cuff of the oscillometric system was located on the contralateral arm. Differences in arterial blood pressure had been excluded. RESULTS. Histograms of the differences in the various pressure measurements, linear regression, and correlation coefficients were determined for quantitative comparison. The two non-invasive measurement devices (FINAPRES 2300, HP 78352A) yielded similar results in spontaneously breathing patients. In ventilated patients the reliability of oscillometric measurements was worse than that of the photoplethysmographic, especially for diastolic and mea...Continue Reading

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