Pilot Study of Stellate Ganglion Injection to Provide Relief From Hot Flushes

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
Lee Shulman, Northwestern University
ClinicalTrials.gov Identifier:
First received: October 8, 2009
Last updated: March 30, 2015
Last verified: March 2015

This study is being done to determine whether stellate ganglion injection with local anesthetic (the study procedure) can reduce the number and severity of hot flashes in women who have hot flashes.

Hot flashes can have a significant impact on daily living, disrupt sleep, and lead to fatigue and irritability during the day. Hot flashes are the most common reason that women seek hormonal therapy. However, for many women, including breast cancer survivors, this is rarely an option, and these women seek alternatives to hormonal therapy to treat hot flashes.

The study procedure has been in clinical use for more than fifty years in treating certain disease states and chronic pain. The study procedure has not been used to relieve hot flashes and the use of the study procedure with local anesthetic for the reduction of hot flushes is considered experimental.

Condition Intervention
Hot Flashes
Procedure: Sympathetic nerve block with 1% lidocaine 1-2 ml
Procedure: Superficial subcutaneous injection

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Caregiver)
Primary Purpose: Treatment
Official Title: Pilot Study of Stellate Ganglion Injection With Anesthetic as a Method to Provide Relief From Hot Flushes

Resource links provided by NLM:

Further study details as provided by Northwestern University:

Primary Outcome Measures:
  • Reduction of hot flushes. [ Time Frame: 6 months ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • To investigate the impact of stellate ganglion injection with local anesthetic on cognitive function. [ Time Frame: 3 months ] [ Designated as safety issue: No ]

Estimated Enrollment: 40
Study Start Date: February 2009
Estimated Study Completion Date: December 2016
Estimated Primary Completion Date: December 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Lidocaine injection
Stellate Ganglion Injection with Lidocaine
Procedure: Sympathetic nerve block with 1% lidocaine 1-2 ml
Stellate Ganglion Injection
Placebo Comparator: saline injection
Superficial subcutaneous injection
Procedure: Superficial subcutaneous injection
Superficial subcutaneous injection with saline


Ages Eligible for Study:   30 Years to 65 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Women surgically or naturally menopausal,
  • Experiencing moderate to severe hot flushes, AND
  • Elect to undergo stellate ganglion block procedure.

Exclusion Criteria:

  • Subjects who are currently sick,
  • Subjects have acute infections or cardiac compromise,
  • Subjects who have local infections of the anterior neck region, severe
  • Subjects who have pulmonary disease,
  • Subjects who are anticoagulated,
  • Subjects who are on hormone therapy,
  • Subjects who have a blood clotting disorder,
  • Subjects who have an American Society of Anesthesiologists (ASA) physical status score of 3 or higher (severe systemic disease, not incapacitating),
  • Subjects who have allergic reactions to local anesthetics and/or contrast dyes,
  • Subjects who have past or present diagnosis of psychosis,
  • Subjects who have current diagnosis of depression, OR
  • Subjects who have current substance or alcohol abuse.
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00992914

United States, Illinois
Northwestern University
Chicago, Illinois, United States, 60611
Sponsors and Collaborators
Northwestern University
Principal Investigator: Lee P Shulman, MD Northwestern University
  More Information

Responsible Party: Lee Shulman, Professor, Northwestern University
ClinicalTrials.gov Identifier: NCT00992914     History of Changes
Other Study ID Numbers: STU6644 
Study First Received: October 8, 2009
Last Updated: March 30, 2015
Health Authority: United States: Institutional Review Board

Keywords provided by Northwestern University:
Hot flushes (vasomotor symptoms)

Additional relevant MeSH terms:
Anesthetics, Local
Anti-Arrhythmia Agents
Central Nervous System Depressants
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Peripheral Nervous System Agents
Physiological Effects of Drugs
Sensory System Agents
Sodium Channel Blockers
Voltage-Gated Sodium Channel Blockers

ClinicalTrials.gov processed this record on May 23, 2016