Computational protocol: The photoplethysmographic amplitude to pulse pressure ratio can track sudden changes in vascular compliance and resistance during liver graft reperfusion

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Protocol publication

[…] Demographic and hemodynamic data are presented as median with interquartile range (IQR). Appropriate changes in hemodynamic variables between those before and after graft reperfusion were tested using a paired t test. For intraindividual data, we performed linear and curvilinear regression between PPGamp/PP and TPR or Cwk, and the best fit was retained. Correlation coefficients were shown as median with 95% confidence intervals (CIs). To analyze data points of all patients, we calculated percent changes from baseline value in PPGamp/PP, TPR, and Cwk. Relationships between percent changes in variables were also examined using linear and curvilinear regression. SPSS software version 21.0 (IBM SPSS Inc., Chicago, IL) and SigmaPlot (version 12.0; Systat Inc., San Jose, CA) were used for statistical analysis. […]

Pipeline specifications

Software tools SPSS, SigmaPlot
Application Miscellaneous
Diseases Hypotension