Clinical trial Recruiting at 1 site Phase 3 Interventional Ages 18 and up

Sphenopalatine ganglion block versus epidural blood patch for post-dural puncture headache

Official title: Efficacy of Sphenopalatine Block Compared to Blood Patch in the Management of Post-dural Puncture Headaches

Run by University Hospital, Clermont-Ferrand · NCT07354464 · Data updated 2026-11-12

This test compares a sphenopalatine ganglion block and an epidural blood patch to see which relieves post-dural puncture headaches better in adults whose pain hasn't improved after 24 hours of usual treatment.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment80 (estimated)
SponsorUniversity Hospital, Clermont-Ferrand
Academic / other
Locations1 site (Clermont-Ferrand)
StatusRecruiting
StartedFebruary 19, 2026
Main results expectedFebruary 2028
Study endsFebruary 2028
Registry record updatedFebruary 27, 2026
Trial IDNCT07354464 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18 years) with post-dural puncture headache meeting ICHD-3 criteria that persists after 24 hours of conservative treatment, who can provide written informed consent and are covered by social health insurance, are eligible.

Probably not a fit

Patients who are pregnant, under legal protection or deprived of liberty, have contraindications to local anesthetics or certain cardiac/neurological conditions, or whose headache resolves with conservative care are unlikely to benefit from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This single-center, randomized phase 3 interventional trial enrolls adults with post-dural puncture headache that persists after 24 hours of conservative care and randomizes them to receive either a sphenopalatine ganglion block or an epidural blood patch. Headache intensity is recorded on a numerical rating scale immediately before the intervention and at 30 minutes, 1 hour, 2 hours, 6 hours, 24 hours, 48 hours and 7 days after treatment, with secondary outcomes collected over 7 days. Outcome assessments are performed by a clinical research associate who is blinded to treatment allocation, and patients are monitored in the post-anesthesia care unit for at least 30 minutes and hospitalized for a minimum of 6 hours. If the assigned treatment is ineffective after 24 hours, a rescue epidural blood patch is permitted regardless of randomization, and follow-up assessments can be completed by telephone if the patient is discharged.

Why it matters

Potential benefit: If successful, the sphenopalatine ganglion block could offer a less invasive, quicker option that reduces the need for epidural blood patches.

How similar studies have gone: Epidural blood patch is the established gold standard and small prior reports of sphenopalatine ganglion block show promising but mixed results, so clear head-to-head randomized evidence is still limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with post-dural puncture headache meeting the criteria of the International Classification of Headache Disorders (ICHD-3) and persisting after 24 hours of conservative treatment,
* Patients aged over 18 years,
* Patients affiliated to a social security health insurance system,
* Patients who have provided written informed consent.

Exclusion Criteria:

* Patients under legal protection (guardianship or curatorship), deprived of liberty (prisoners), or under judicial safeguard,
* Pregnant patients,
* Patients with hypersensitivity to lidocaine, prilocaine, local anesthetics of the amide type, or to any of the excipients listed in the composition of the drugs used in the protocol,
* Patients with acute porphyria, atrioventricular conduction disorders requiring permanent cardiac pacing not yet implemented, or epilepsy not controlled by treatment,
* Patients receiving antiarrhythmic therapy associated with torsades de pointes (amiodarone, disopyramide, quinidine derivatives, sotalol, etc.),
* Patients with atypical post-dural puncture headache suggestive of a post-dural puncture complication (altered consciousness, focal neurological deficit, seizures, visual disturbances, etc.),
* Patients with chronic headaches requiring preventive treatment,
* Patients with a history of spinal surgery precluding the performance of an epidural blood patch,
* Patients with contraindications to epidural blood patch (local or systemic infection, platelet count \< 80 G/L, coagulation disorders, progressive neurological disease),
* Patients with contraindications to sphenopalatine ganglion block (nasal polyposis, rhinopharyngitis, deviated nasal septum).

Where it's running

  • CHU de Clermont-Ferrand
    Clermont-Ferrand, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.