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Evaluation of Cerebral Oxygenation During Orthopedic Surgeries Performed in the Beach Chair Position Under General Anesthesia

NCT07270341 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 40

Last updated 2025-12-08

No results posted yet for this study

Summary

The goal of this observational study is to determine the correlation between cerebral oxygenation values measured by near-infrared spectroscopy (NIRS) and other routine monitoring parameters in patients placed in the semi-sitting position.

The primary questions investigated are :

Do NIRS values correlate with heart rate, invasive mean arterial pressure, and end-tidal carbon dioxide?

Do NIRS values reflect changes observed in arterial blood gas analysis?

Are cerebral perfusion-related parameters associated with patients' comorbidities such as diabetes, obesity, and hypertension?

Researchers will compare routine noninvasive monitoring (heart rate, blood pressure, peripheral oxygen saturation) with invasive arterial monitoring and NIRS to assess whether NIRS provides additional information for evaluating cerebral perfusion.

Participants will be monitored for:

Heart rate

Invasive mean arterial pressure

End-tidal carbon dioxide

Arterial blood gas changes

Cerebral oxygenation with NIRS

Patients' comorbidities (e.g., diabetes, obesity, hypertension) will also be recorded, and their association with perfusion-related parameters will be analyzed.

Conditions

  • Cerebral Perfusion
  • Cerebral Oxygenation
  • Hemodynamic Monitoring
  • Semi-sitting Position
  • Orthopedic Surgical Procedures

Interventions

DIAGNOSTIC_TEST

Near-Infrared Spectroscopy (NIRS) Monitoring

Cerebral oxygenation will be monitored using NIRS in addition to standard intraoperative monitoring (heart rate, invasive arterial pressure, end-tidal CO₂, and blood gas analysis).

Sponsors & Collaborators

  • Akdeniz University

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-10-01
Primary Completion
2026-05-30
Completion
2026-05-30

Countries

  • Turkey (Türkiye)

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 NCT07270341 on ClinicalTrials.gov