NCT07747441 Perfusion Index and Spinal Hypotension in Day-Case Knee Arthroscopy
| NCT ID | NCT07747441 |
| Status | Recruiting |
| Phase | — |
| Sponsor | Ankara Etlik City Hospital |
| Condition | Hypotension |
| Study Type | OBSERVATIONAL |
| Enrollment | 150 participants |
| Start Date | 2026-08-06 |
| Primary Completion | 2026-12-14 |
Eligibility & Interventions
Eligibility Fast-Check
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What to Expect as a Participant
This is an observational study. You will not receive an experimental treatment; researchers will collect data based on your existing condition or standard treatment.
This trial targets 150 participants in total. It began in 2026-08-06 with a primary completion date of 2026-12-14.
⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.
Brief Summary
This prospective observational study aims to investigate the role of the baseline perfusion index (PI) in predicting spinal anesthesia-induced hypotension (SAIH) in ASA I-II patients undergoing day-case knee arthroscopy. Spinal anesthesia is a widely preferred technique for lower extremity surgeries, including knee arthroscopy. However, sympathetic blockade during spinal anesthesia frequently leads to significant hemodynamic instability, particularly hypotension, which can result in adverse perioperative outcomes. While age and baseline blood pressure are traditional risk factors, they often fail to accurately predict the onset of hypotension in healthy populations. The perfusion index (PI), a non-invasive parameter measured via pulse oximetry, reflects peripheral vascular tone and baseline sympathetic activity. An elevated baseline PI indicates baseline vasodilation and a higher susceptibility to sympathectomy, potentially offering an early and non-invasive prediction of SAIH before the hemodynamic collapse occurs. The primary outcome of the study is the incidence of spinal anesthesia-induced hypotension (defined as a mean arterial pressure \< 65 mmHg or a decrease in systolic blood pressure \> 25% from baseline). Secondary outcomes include the onset time of sensory block, and intraoperative ephedrine and fluid requirements.
Eligibility 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
Contact & Investigator
Frequently Asked Questions
Who can join the NCT07747441 clinical trial?
This trial is open to participants of all sexes, aged 18 Years or older, up to 65 Years, studying Hypotension. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.
Is NCT07747441 currently recruiting?
Yes, NCT07747441 is actively recruiting participants. Contact the research team at ibrahimtpc78@gmail.com for enrollment information.
Where is the NCT07747441 trial being conducted?
This trial is being conducted at Ankara, Turkey (Türkiye).
Who is sponsoring the NCT07747441 clinical trial?
NCT07747441 is sponsored by Ankara Etlik City Hospital. The trial plans to enroll 150 participants.