Rapid declines in systolic blood pressure are associated with an increase in pulse transit time.

ABSTRACT:

Background

The correlation between pulse transit time and blood pressure has been proposed as a route to measure continuous non-invasive blood pressure. We investigated whether pulse transit time trends could model blood pressure trends during episodes of rapid declines in blood pressure.

Methods

From the Medical Information Mart for Intensive Care waveform database we identified substantial blood pressure reductions. Pulse transit time was calculated from the R-peak of the electrocardiogram to the peak of the arterial pulse waveform. The time-series were processed with a moving average filter before comparison. Averaged, continuous heart rate was also analysed as a control. The intra-individual association between variables was assessed per subject using linear regression.<

SUBMITTER: Schaanning SG 

PROVIDER: S-EPMC7544103 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature