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The Impact of Intraoperative Change in the Body Temperature on the Perfusion Index

NCT06998849 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 50

Last updated 2025-05-31

No results posted yet for this study

Summary

The goal of this observational study is to learn about the impact of intraoperative change in temperature in adult patients undergoing surgeries under general anaesthesia. The main question it aims to answer is:

Is the change in core body temperature reflected by changes in the prfusion index? Patients' core temperature, peripheral temperature and perfusion indices will be recorded throughout the span of the procedure.

Conditions

  • Perfusion Index
  • Hypothermia; Anesthesia

Interventions

DIAGNOSTIC_TEST

Perfusion index

The perfusion index (PI) is defined as the ratio of pulsatile light absorption to continuous light absorption, denoted as AC/DC. Initially used as a quality signal indicator in pulse oximetry, PI has increasingly been recognized for its potential in non-invasive hemodynamic monitoring. Since PI changes with peripheral blood flow, it may reflect peripheral temperature gradients and, consequently, thermoregulatory responses like peripheral vasoconstriction. Studies have reported that the core-to-peripheral temperature difference correlates with peripheral PI. The findings suggest that both peripheral and core temperatures contribute to the threshold for shivering and that PI reflects the vasoconstriction induced by thermoregulatory responses that precede shivering

Sponsors & Collaborators

  • Ain Shams University

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-04-01
Primary Completion
2024-06-30
Completion
2024-08-05

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06998849 on ClinicalTrials.gov