Assessment of Ultrasonographic Measurement of Inferior Vena Cava Collapsibility Index in The Prediction of Hypotension Associated with Tourniquet Release in Total Knee Replacement Surgeries under Spinal Anesthesia

In total knee replacement (TKR) surgery, a pneumatic tourniquet is used to limit blood loss and secure a clean operating field, might increase the risk of complications like hypotension thus, meticulous care is important in anesthesia.