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Prediction of Post-Induction Hypotension Using Plethysmographic Variability Index During Diagnostic Laryngoscopy
Sponsor: University of Gaziantep
Summary
This prospective observational study aims to evaluate whether non-invasive hemodynamic parameters, including the plethysmographic variability index (PVI) and perfusion index (PI), can predict post-induction hypotension in patients undergoing diagnostic direct laryngoscopy under general anesthesia. Patients aged 18-75 years with ASA physical status I-III scheduled for elective direct laryngoscopy will be included. PVI and PI values will be recorded before anesthesia induction and in the early post-induction period. The relationship between these indices and the decrease in mean arterial pressure after induction will be analyzed to determine their predictive value for hypotension.
Official title: Prediction of Post-Induction Hypotension Using the Plethysmographic Variability Index in Patients Undergoing Diagnostic Laryngoscopy Under General Anesthesia
Key Details
Gender
All
Age Range
18 Years - 75 Years
Study Type
OBSERVATIONAL
Enrollment
110
Start Date
2026-03-09
Completion Date
2027-02-10
Last Updated
2026-03-09
Healthy Volunteers
No
Conditions
Interventions
Plethysmographic Variability Index (PVI) and Perfusion Index (PI) Monitoring
Non-invasive monitoring of plethysmographic variability index (PVI) and perfusion index (PI) will be performed using pulse oximetry during the peri-induction period in patients undergoing diagnostic direct laryngoscopy under general anesthesia. These parameters will be recorded before anesthesia induction and during the early post-induction phase to evaluate their association with changes in mean arterial pressure and their predictive value for post-induction hypotension.