Sphenopalatine Ganglion Blocks RCT (SPGblock)
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ClinicalTrials.gov Identifier: NCT03666663 |
Recruitment Status :
Completed
First Posted : September 12, 2018
Results First Posted : October 11, 2021
Last Update Posted : October 11, 2021
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Migraine | Drug: Lidocaine Drug: Bupivacaine Drug: Ropivacaine Drug: Placebo | Phase 4 |
Chronic Migraine is a brain disorder with high prevalence. It is the 7th leading cause of disability worldwide according the WHO.
SPG block is a treatment for migraine that has been used for two decades. It can be done by needle injection of anesthetic to the region of the SPG. However, there are now multiple catheter devices that can be used to non-invasively administer anesthetic topically through the nasal cavity to the region of the SPG where the anesthetic is then absorbed through thin membranes covering the SPG.
Various anesthetic agents have been studied however currently, to our knowledge, there is no head to head comparison of the various anesthetics used. Studies of SPG blocks in the setting of chronic migraine are few as compared to the use of SPG as acute treatment for migraine.
With the use of an RCT, we aim to determine the overall efficacy of SPG blocks used at longer intervals than have been studied in the past as compared to placebo, as well as to examine the relative efficacy of the anesthetics used most commonly and studied for SPG blocks.
We will be using an FDA cleared device, the Sphenocath which was developed and registered with the FDA for this specific population and purpose. The study intervention is the standard practice in the UCSF Headache Center to perform SPG blocks for our patients with chronic migraine. The frequency we use in clinical practice and that we plan to study is less often than in previous studies of this intervention in this population.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 10 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Intervention Model Description: | Randomized placebo controlled study |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Masking Description: | Double blind study |
Primary Purpose: | Treatment |
Official Title: | UCSF Sphenopalatine Ganglion Block Study- a Randomized Double Blind Placebo Controlled Trial to Compare Nasal Anesthetics for Migraine Prevention in Adults. |
Actual Study Start Date : | February 1, 2019 |
Actual Primary Completion Date : | July 8, 2021 |
Actual Study Completion Date : | July 8, 2021 |

Arm | Intervention/treatment |
---|---|
Experimental: Lidocaine
Participants will receive SPG blocks with lidocaine.
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Drug: Lidocaine
Nasal application using the Sphenocath device- cleared by FDA |
Experimental: Bupivacaine
Participants will receive SPG blocks with bupivacaine
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Drug: Bupivacaine
Nasal application using the Sphenocath device- cleared by FDA |
Experimental: Ropivacaine
Participants will receive SPG blocks with ropivacaine
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Drug: Ropivacaine
Nasal application using the Sphenocath device- cleared by FDA |
Placebo Comparator: Placebo (saline)
Participants will receive SPG blocks with placebo (saline)
|
Drug: Placebo
Placebo Saline using the Sphenocath device- cleared by FDA
Other Name: Placebo Saline |
- Number of Participants With a Reduction in Headache Days From Baseline to Month 8 of Treatment [ Time Frame: 8 months ]Reduction in headache days from baseline to month 8 of treatment as self- reported by the patients (yes/no) and as per headache diary and retrospective charts review documentation

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Age 18 years or more at time of consent
- Current patients in the UCSF Headache Center eligible to receive SPG blocks for migraine and would otherwise receive treatment clinically
- Ability to provide consent for the research study
Exclusion Criteria
- Pregnant or breast feeding within 4 weeks of enrollment
- Inability to communicate with the study team
- Patients who cannot read and understand English
- Deemed unsuitable for enrollment in study by the investigator
- Allergy to local anesthetics or saline

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03666663
United States, California | |
UCSF Headache Center | |
San Francisco, California, United States, 94115 |
Principal Investigator: | Nina Riggins, MD | UCSF Headache Center |
Documents provided by University of California, San Francisco:
Responsible Party: | University of California, San Francisco |
ClinicalTrials.gov Identifier: | NCT03666663 |
Other Study ID Numbers: |
18-25736_SPG_2018.09 |
First Posted: | September 12, 2018 Key Record Dates |
Results First Posted: | October 11, 2021 |
Last Update Posted: | October 11, 2021 |
Last Verified: | September 2021 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
Migraine Disorders Headache Disorders, Primary Headache Disorders Brain Diseases Central Nervous System Diseases Nervous System Diseases Lidocaine Bupivacaine Ropivacaine Anesthetics, Local |
Anesthetics Central Nervous System Depressants Physiological Effects of Drugs Sensory System Agents Peripheral Nervous System Agents Anti-Arrhythmia Agents Voltage-Gated Sodium Channel Blockers Sodium Channel Blockers Membrane Transport Modulators Molecular Mechanisms of Pharmacological Action |