Perfusion Index as a Predictor of Spinal Anesthesia–Induced Hypotension in Day-Case Knee Arthroscopy
Official title: Predictive Value of Baseline Perfusion Index for Spinal Anesthesia-Induced Hypotension in Healthy Patients Undergoing Knee Arthroscopy: A Prospective Observational Trial
Run by Ankara Etlik City Hospital · NCT07747441 · Data updated 2026-11-12
This study looks to see if a baseline perfusion index can predict low blood pressure after spinal anesthesia in healthy adults having knee arthroscopy.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 150 (estimated) |
| Sponsor | Ankara Etlik City Hospital Government |
| Locations | 1 site (Ankara, Yenimahalle\Ankara) |
| Status | Recruiting |
| Started | August 6, 2026 |
| Main results expected | December 14, 2026 |
| Study ends | December 28, 2026 |
| Registry record updated | August 10, 2026 |
| Trial ID | NCT07747441 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18–65 with ASA I–II status undergoing knee arthroscopy with spinal anesthesia.
✕Probably not a fit
Patients outside the 18–65 age range or with ASA III–IV, or those not undergoing knee arthroscopy with spinal anesthesia, may not benefit from this predictive approach.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This prospective observational study will measure baseline perfusion index (PI) in ASA I–II adults scheduled for day-case knee arthroscopy under spinal anesthesia. The goal is to determine whether higher PI, reflecting vasodilation and sympathetic activity, is associated with an increased risk of spinal anesthesia–induced hypotension (SAIH). Data collection will capture PI values and intraoperative blood pressure to identify potential predictive relationships. The study does not assign interventions but aims to improve risk stratification and perioperative management for patients undergoing this procedure.
Why it matters
Potential benefit: If successful, clinicians may better predict which patients are at risk for SAIH and tailor monitoring or fluid/vasopressor strategies accordingly.
How similar studies have gone: Previous research supports the idea that noninvasive perfusion metrics can relate to hemodynamic responses, though specific predictive value for SAIH in this setting is limited and exploratory.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Between the ages of 18-65 * Having an ASA Score of I-II * Including data collection of parts that underwent knee arthroscopy Exclusion Criteria: * Patients under 18 and over 65 years of age * Patients with ASA Score III and above
Where it's running
-
Ankara Etlik City Hospital
Ankara, Yenimahalle\Ankara, Turkey (Türkiye) Recruiting
Study contacts
- Study coordinator: İbrahim MD Topcu, MD
- Email: ibrahimtpc78@gmail.com
- Phone: 05437860316
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.