Clinical Trial

Ultrasonographic Optic Nerve Sheath Diameter in Postdural Puncture Headache Diagnosis

Completed
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Summary
This study aims to investigate the hypothesis that ultrasonographic optic nerve sheath diameter (ONSD) measurement can help predict the development and severity of postdural puncture headache (PDPH) in patients undergoing spinal anesthesia for total knee arthroplasty. PDPH is defined as a headache that worsens in an upright position and improves while lying down.
Protocol Amendment History 6 amendments
This ClinicalTrials.gov record has been amended 6 times since 2025-07-27; most recent amendment 2026-02-07.
Status change: Recruiting → Completed 2026-02-07
Status change: Not Yet Recruiting → Recruiting 2025-08-08
Trial Details
NCT Number NCT07100158
Lead Sponsor Ankara City Hospital Bilkent
Conditions Anesthesia, Local, Headache
Enrollment 176 participants
Start Date 2025-08-08
Primary Completion 2025-12-09 (estimated)
Study Completion 2026-02-07 (estimated)
Updated on ClinicalTrials.gov 2026-02-10