Kiran S. Merchant

Diagnostic Performance of Pulse Pressure Variation for Predicting Fluid Responsiveness During Spine Surgery in the Prone Position: A Systematic Review and Meta-Analysis.

BACKGROUND Pulse pressure variation (PPV) is widely used to guide fluid responsiveness in mechanically ventilated patients, but its accuracy in the prone position remains uncertain. Prone positioning alters respiratory mechanics and venous return, potentially diminishing the respiratory variation in stroke volume that...