The Efficacy of Inferior Vena Cava Diameter, Perfusion Index and Pleth Variability Index on Predicting Hypotension in Spinal Anesthesia

Objective: One of the most common side effects spinal anesthesia (SA) is hypotension. The aim study was to evaluate efficacay inferior vena cava (IVC) diameter measurements, perfusion index (PI) and pleth variability (PVI) values in determining risk developing hypotension after SA. Materials Methods: This conducted on 81 patients who underwent transurethral prostatectomy. Before administration SA, PI PVI values, IVC diameters (IVCmin: during inspiration IVCmax: expiration) collapsibility (IVCCI) non-invasive blood pressure were recorded. Patients with a baseline systolic arterial reduction rate ≥25% determined as group measurements measured immediately SA then 5 min, at end operation. heart rate, mean pressure, recorded regular intervals. Results: Hypotension occured 32 (39.5%). In hypotensive group, IVCmax IVCmin observed lower IVCCI higher. optimal threshold value ≤0.99 >%44.5 for predicting Conclusion: While effective not. To predict by will allow more intervention avoid