Clinical trial No longer in our active list Observational Ages 19 to 85

Investigating intravascular injection during trigeminal nerve blocks

Official title: Incidence of Intravascular (IV) Injection During Trigeminal Nerve Blocks and Impact of Needle Types to the IV Uptake: A Prospective Cohort Study

Run by Seoul National University · NCT04467398 · Data updated 2026-05-14

This study is no longer in our active list. It may have stopped recruiting or finished. The details below are as of 2026-05-14 and are kept for reference. Check ClinicalTrials.gov for its current status, or see similar studies below.

This study is testing if using different types of needles during trigeminal nerve blocks affects how often doctors accidentally inject into a blood vessel in patients with facial pain.

Quick facts

Study typeObservational
Ages19 Years to 85 Years
SexAll
Enrollment200 (estimated)
SponsorSeoul National University
Academic / other
Locations1 site (Seoul)
Trial IDNCT04467398 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are patients scheduled to undergo trigeminal nerve blocks due to facial pain.

Probably not a fit

Patients who may not benefit from this study include those who refuse participation, are pregnant, have coagulopathy, have local or systemic infections, have allergies to the injectate, or have anatomical deformations of the skull.

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

What this trial studies

This observational study aims to assess the incidence of intravascular injection that occurs during trigeminal nerve blocks. Patients scheduled for these procedures will be randomized into two groups based on the type of needle used: the tuohy needle group and the quincke needle group. The study will monitor and record any instances of intravascular injection during the nerve block procedures. This research could provide valuable insights into the safety and efficacy of different needle techniques in managing facial pain.

Why it matters

Potential benefit: If successful, this study could enhance the safety of trigeminal nerve block procedures for patients suffering from facial pain.

How similar studies have gone: While this study focuses on a specific aspect of nerve blocks, similar studies have shown varying success in improving procedural safety and outcomes.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* The patients who scheduled to undergo trigeminal nerve block due to the facial pain

Exclusion Criteria:

* Refusal of the patient
* Pregnancy
* Coagulopathy
* Local or systemic infection
* Allergy to injectate
* Anatomical deformation of the skull

Where it's running

  • Seoul National University Hospital
    Seoul, Korea, Republic of
    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.