Real-time, spectral analysis of the arterial pressure waveform using a wirelessly-connected, tablet computer: a pilot study.

ABSTRACT: Spectral analysis of the arterial pressure waveform, using specialized hardware, has been used for the retrospective calculation of the 'Spectral Peak Ratio' (SPeR) of the respiratory and cardiac arterial spectral peaks. The metric can quantify the cardiovascular response to volume loading by analysing the effect of changing tidal volume (indexed to body weight) (V_TI) on pulse pressure variability. In this pilot study, the feasibility of real-time SPeR calculation, using a mobile computer which was wirelessly connected to the patient monitor, was evaluated by examining the determinants of SPeR in 60 cardiac-surgical patients. In 30 patients undergoing aortic valve replacement (AVR), graded cyclical changes in ventricular loading were induced by increasing V_TI over 2 m

SUBMITTER: Pybus DA 

PROVIDER: S-EPMC6314984 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature