Effectiveness of Finger and Forehead Plethysmographic Variability Index Monitoring in Pediatric Patients

The Plethysmographic Variability Index (PVI) can be measured with both finger and forehead probes. Vasoconstriction may reduce the reliability of PVI measurements in pediatric surgical patients prone to hypothermia. The vascular structure of the forehead area is resistant to changes in vasomotor tonus. The aim of our study is to compare the efficacy of PVI values measured at the finger and forehead areas to predict fluid responsiveness in these patients.