Correlation between pleth variability index and ultrasonic inferior vena cava-collapsibility index in parturients with twin pregnancies undergoing cesarean section under spinal anesthesia

Abstract

Keypoints The combination of pleth variability index (PVI) and inferior vena cava-collapsibility index (IVC-CI) has correlation and consistency in cesarean delivery in twin pregnancies. The distribution intervals of IVC-CI% and PVI were relatively widely distributed after anesthesia when the blocking plane was in the T5 stratum, narrower at T6, and intermediate at T7. PVI is a valuable predictor of cesarean delivery volume in twin pregnancies in clinical practice.

Keywords

• Pleth variability index
• Twin pregnancies
• Inferior vena cava-collapsibility index
• Spinal anesthesia