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Abstract

German

French

Compared to ECG, peripheral volume pulse (PVP) is both far more sensitive and provides more important information as to circulation. In addition it is free of electrical hazards and disturbances, being both noninvasive and atraumatic. It can be applied either with conventional leads or by telemetry, and is useful in all operative positions and sites. The only possible danger is pressure necrosis and burns of the ear lobe due to overextended use of transmission type photoelectric plethysmographic monitoring with a too tightly screwed photocell. For routine patient monitoring during anaesthesia, PVP together with BP and CVP provide all the necessary information. The photoelectric, plethysmographic and piezoelectric transducers all monitor alpha-receptor activity but only the last-mentioned, when placed on striated muscle, will show changes in beta-activity. The plethysmographic method gives detailed information on volume/pressure changes in the periphery, also is useful in analyzing circulation time and left ventricular performance. Moreover PVP is extremely sensitive to changes in depth of anaesthesia.

Keywords

peripheral volume pulse anaesthesia monitoring arrhythmia sympathetic activity transducers pain volume replacement

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The Role of Peripheral Volume Pulse in Cardiovascular Monitoring during Anaesthesia

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