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Optic Nerve Sheath Diameter in Postspinal Headache

Impact of Spinal Needle Gauge on Optic Nerve Sheath Diameter in Patients With Post-Dural Puncture Headache

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06957899
Acronym
PDPHPatients
Enrollment
40
Registered
2025-05-06
Start date
2025-07-01
Completion date
2025-12-05
Last updated
2025-12-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Post-Dural Puncture Headache

Keywords

Post-Dural Puncture Headache (PDPH), Intracranial Hypotension, Spinal Anesthesia Complication, Optic Nerve Sheath Diameter, Spinal Needle Gauge

Brief summary

This study aims to investigate the relationship between spinal needle size and optic nerve sheath diameter (ONSD) in patients who develop post-dural puncture headache (PDPH) after spinal anesthesia. ONSD is measured using ultrasound, which helps estimate changes in brain pressure. The study also examines whether the severity of headache is related to ONSD. Adult patients aged 18 to 75 years who develop PDPH will be included. This research will be conducted at Konya City Hospital and is expected to last for approximately six months.

Detailed description

This prospective observational study investigates the relationship between spinal needle gauge and optic nerve sheath diameter (ONSD) in patients who develop post-dural puncture headache (PDPH) following spinal anesthesia. ONSD is measured using ultrasound as a non-invasive marker of intracranial pressure. The study also aims to evaluate the association between headache severity, assessed by the Visual Analog Scale (VAS), and ONSD values. Patients aged 18-75 years with PDPH will be included, and data on spinal needle gauge, ONSD, and VAS scores will be analyzed. The study is being conducted at a single tertiary care center and aims to contribute to understanding the physiopathology of PDPH and its relation to procedural factors.

Interventions

None listed

Sponsors

Konya City Hospital
Lead SponsorOTHER

Study design

Observational model
CASE_ONLY
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* Patients diagnosed with postdural puncture headache (PDPH) * Male and female patients aged 18-75 years * Patients classified as American Society of Anesthesiologists (ASA) physical status I-III

Exclusion criteria

* Presence of neurological or ophthalmological disorders * History of head trauma within the past 6 months * Hypertension * Hepatic encephalopathy * Renal failure * Pregnancy * History of chronic headache or migraine * Refusal to participate * Inability to obtain reliable optic nerve sheath diameter (ONSD) measurements * Communication difficulties preventing assessment * Incomplete or inaccessible medical records

Design outcomes

Primary

MeasureTime frameDescription
Optic nerve sheath diameter (ONSD)Within 4 hours of anesthesia consultation for postoperative headacheThe primary outcome is the measurement of optic nerve sheath diameter (ONSD) via ocular ultrasound in patients who develop postoperative headache attributed to dural puncture. This non-invasive assessment is used to estimate intracranial pressure. The aim is to evaluate whether different spinal needle gauges affect ONSD measurements.

Secondary

MeasureTime frameDescription
Pain severity assessed by Visual Analog Scale (VAS)Within 4 hours of anesthesia consultation for postoperative headachePain severity will be scored using the Visual Analog Scale (VAS), ranging from 0 (no pain) to 10 (worst imaginable pain), during the anesthesia consultation conducted for postoperative headache. This measure will be compared with ONSD values.

Other

MeasureTime frameDescription
Spinal Needle GaugeRetrieved from procedure documentation at the time of spinal anesthesiaThe gauge (diameter in G) of the spinal needle used for the neuraxial procedure will be extracted from anesthesia records. The goal is to assess whether the spinal needle size is associated with ONSD measurements in patients with postoperative headache.

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026