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CompletedNCT05301387GSP-FOLLOWUpdated Apr 29, 2022

The Effect of Ganglion Sphenopalatine Block (GSP-block) Follow-Up

An observational study in Post-Dural Puncture Headache and Ganglion Sphenopalatine Block, sponsored by University Hospital Bispebjerg and Frederiksberg. Completed at 1 site in Denmark. Per ClinicalTrials.gov, last updated 2022-04-29.

Sponsored by University Hospital Bispebjerg and Frederiksberg · Observational

Study type
Observational
Model
Other
Time perspective
Retrospective
Enrollment
38
Sex
All
01

Study summary

The purpose of this study is to evaluate the long term effects of the ganglion sphenopalatine block (GSP block) on postdural puncture headache.

Read the detailed description

Adult patients with postdural puncture headache was enrolled in main study (NCT03652714). In the main study the patients was randomised to receive a ganglion sphenopalatine block (GSP-block) with either local anesthetic (lidocaine + ropivacaine) or placebo (isotone NaCl).

Following inclusion in the main study all participants are sent a follow-up questionnaire.

Primary outcome is disability due to headache defined as moderate to severe disability measured with Migraine Disability Assessment Test (MIDAS) in the 3 months following initial block and average pain score in the 3 months following the initial block on a 0-10 pain intensity scale.

Secondary outcome is disability due to headache defined as moderate to severe disability measured with Migraine Disability Assessment Test (MIDAS) in the 3 previous months as well as average pain scores in the previous 3 months, days with headache and long and short term side effects of the block.

02

Conditions studied

  • Post-Dural Puncture Headache
  • Ganglion Sphenopalatine Block
03

In context

Ganglion Cysts

136 studies on the registry are indexed under Ganglion Cysts; 28 are open to participants now.

This study's enrollment of 38 is below the median of 44 across 28 observational studies indexed under Ganglion Cysts.

Browse Ganglion Cysts studies →

Lead sponsor

University Hospital Bispebjerg and Frederiksberg is the lead sponsor of 68 studies on the registry; 19 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients who were included in main study NCT03652714

Patients who where included in main study and had the following eligibility criteria:

Inclusion criteria

Inclusion Criteria:

  • Age > 18 years
  • Patients with postdural puncture headache defined as moderate to severe postural headache (VAS >= 30mm) after lumbar puncture or accidental dural puncture during epidural insertion with an onset within 3 days following the puncture.
  • Lack of headache remission within 1 day after dural puncture and after treatment with fluids, caffeine and paracetamol
  • Patients who have given their written informed consent for participation in the study after fully understanding the protocol content and limitations.

Exclusion criteria

Exclusion Criteria:

  • Patients who cannot cooperate to the study
  • Patients who does not understand or speak Danish
  • Allergy to the drugs used in the study
  • Has taken opioids within 12 hours prior to intervention
05

Study design

Observational model
Other
Time perspective
Retrospective
Enrollment
38 participants (actual)
Patient registry
No

Interventions

  • ProcedureGanglion Sphenopalatine Block

    Block performed with bilaterally inserted q-tips with 1:1 mixture of lidocaine 40mg/ml and ropivacaine 5mg/mL or Block performed with bilaterally inserted q-tips with isotone NaCl

06

What researchers measure

Primary outcomes

  1. Migraine Disability Assessment Test score

    Disability due to headache defined as moderate to severe disability measured with Migraine Disability Assessment Test Score (MIDAS) ranging from no disability at a score of 0 to severe disability at a score of 21+

    Time frame: 3 months following initial block

  2. Average pain score

    Average pain score measured on a 0-10 pain rating scale (VAS) with 0 meaning no pain and 10 being the worst pain imaginable.

    Time frame: 3 months following initial block

Secondary outcomes

  1. Migraine Disability Assessment Test score

    Disability due to headache is defined as moderate to severe disability measured with Migraine Disability Assessment Test Score (MIDAS) ranging from no disability at a score of 0 to severe disability at a score of 21+

    Time frame: 3 previous months

  2. Average pain score

    Average pain score measured on a 0-10 pain rating scale (VAS) with 0 meaning no pain and 10 being the worst pain imaginable.

    Time frame: 3 previous months

  3. Days with headache

    Number of days with headache

    Time frame: 3 months following initial block as well as the last 3 months

  4. Short term side effects

    Side effects following the block are defined as side effects with a duration of less than 3 months

    Time frame: From date of initial block application until time of questionaire and inclusion in follow up study, assessed up to 60 months.

  5. Long term side effects

    Side effects following the block defined as side effects with a duration of more than 3 months

    Time frame: From date of initial block application until time of questionaire and inclusion in follow up study, assessed up to 60 months.

07

Study locations

1 site
  • Bispebjerg and Frederiksberg Hospital, University of Copenhagen
    Copenhagen, 2400, Denmark
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 29, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05301387
Lead sponsor
University Hospital Bispebjerg and Frederiksberg
Responsible party
Mads Seit Jespersen (Principal Investigator, University Hospital Bispebjerg and Frederiksberg) — Principal investigator
First posted
Mar 29, 2022
Start date
Nov 26, 2021
Primary completion
Apr 19, 2022
Completion
Apr 19, 2022
Last update
Apr 29, 2022

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2022. You cannot join it, but the record below documents what was studied.

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