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ET50 With Fentanyl for Post Caesarean Section Spinal Hypotension (ET-50-Fent)

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified June 2014 by McGill University Health Center.
Recruitment status was:  Recruiting
Information provided by (Responsible Party):
Albert Moore, McGill University Health Center Identifier:
First received: July 2, 2013
Last updated: June 20, 2014
Last verified: June 2014
Hypotension is extremely common after induction of spinal anesthesia for cesarean delivery. Anesthetic blockade of the sympathetic outflow of the spinal cord causes vasodilation, and is one cause of this hypotension. The higher the spread of the blockade will result in a higher incidence of hypotension. Injected hyperbaric medication has about 15 minutes to spread within the intrathecal space before it will be taken up by the nerve roots. The time that a patient remains in one position after medication injection will affect the spread of the resultant anesthetic block. A patient who is left sitting for a longer period of time after injection of hyperbaric medication will have a lower level of block than someone who is placed supine immediately. In this study, the investigators wish to use up down sequential analysis to determine the time period a patient should remain seated after intrathecal injection of hyperbaric bupivacaine and fentanyl that will result in a 50% rate of hypotension.

Condition Intervention Phase
Drug: Bupivacaine with 15 micrograms of fentanyl
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: The Time Required to Remain Sitting After Spinal Anesthesia With Fentanyl for 50% of Patients to Not Experience Hypotension.

Resource links provided by NLM:

Further study details as provided by McGill University Health Center:

Primary Outcome Measures:
  • Sitting time to avoid hypotension [ Time Frame: one hour ]
    Sitting time required to avoid a drop of 20% of patient's baseline blood pressure or symptoms of hypotension in 50% of patients

Secondary Outcome Measures:
  • Pain occurence [ Time Frame: One hour ]

Estimated Enrollment: 40
Study Start Date: July 2013
Estimated Study Completion Date: June 2015
Estimated Primary Completion Date: June 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 2 ml Bupivacaine
2 ml Bupivacaine with 15 micrograms of fentanyl
Drug: Bupivacaine with 15 micrograms of fentanyl
Testing 2 doses of Bupivacaine (12.5 mg and 15 mg) with 15 micrograms fentanyl
Active Comparator: 1.5 ml Bupivacaine
1.5 ml Bupivacaine with 15 micrograms of fentanyl
Drug: Bupivacaine with 15 micrograms of fentanyl
Testing 2 doses of Bupivacaine (12.5 mg and 15 mg) with 15 micrograms fentanyl

  Show Detailed Description


Ages Eligible for Study:   18 Years to 50 Years   (Adult)
Sexes Eligible for Study:   Female
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients 18 years or older, presenting for scheduled cesarean delivery to the C7 birthing centre.

Exclusion Criteria:

  • Unable to communicate in English or French
  • Multiple gestations
  • Patients with hypertension
  • Patients with contraindications to any drug or techniques used in the study
  • BMI > 35
  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 identifier: NCT01896960

Contact: Aly Elbahrawy, MD

Canada, Quebec
Royal Victoria Hospital Recruiting
Montreal, Quebec, Canada
Contact: Albert Moore, MD   
Sponsors and Collaborators
McGill University Health Center
Principal Investigator: Albert Moore, MD McGill
  More Information

Responsible Party: Albert Moore, Assistant Professor, McGill University Health Center Identifier: NCT01896960     History of Changes
Other Study ID Numbers: 12-273-SDR
Study First Received: July 2, 2013
Last Updated: June 20, 2014

Keywords provided by McGill University Health Center:
Post spinal hypotension
Cesarian Section

Additional relevant MeSH terms:
Vascular Diseases
Cardiovascular Diseases
Analgesics, Opioid
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Adjuvants, Anesthesia
Anesthetics, Intravenous
Anesthetics, General
Anesthetics, Local processed this record on May 23, 2017