Investigating the Relationship Between Central and Peripheral Venous Pressure in Neurosurgical Patients Undergoing Craniotomy

Abstract

Monitoring venous pressure is critical in neurosurgical patients undergoing craniotomy, as it provides valuable hemodynamic information that can influence intraoperative management and postoperative outcomes. This study aims to investigate the relationship between central venous pressure (CVP) and peripheral venous pressure (PVP) in neurosurgical patients undergoing craniotomy to assess whether PVP can serve as a reliable surrogate for CVP monitoring. A prospective observational study was conducted on 150 patients scheduled for elective craniotomy, where simultaneous CVP and PVP measurements were recorded at multiple intraoperative time points. The correlation between the two parameters was analyzed, and the predictive accuracy of PVP in estimating CVP was evaluated. The findings demonstrated a significant correlation between CVP and PVP, with PVP showing potential as a non-invasive and easily accessible alternative for intraoperative hemodynamic assessment. However, variability in PVP-CVP differences was observed in patients with altered intracranial pressure or hemodynamic instability. The study concludes that while PVP may serve as a supplementary indicator for venous pressure monitoring, direct CVP measurement remains essential in high-risk neurosurgical cases. Further research is needed to refine predictive models and determine the clinical scenarios where PVP can effectively replace CVP monitoring.