Intrathecal Opioids for Pain Control after Cesarean Delivery: Determining the Optimal Dose


  • Study type

  • Study IDs

  • Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • Site IRB
    • Rochester, Minnesota: 13-008490
    NCT ID: NCT02009722
    Sponsor Protocol Number: 13-008490

About this study

Both hydromorphone and morphine are administered as part of spinal anesthesia to help improve pain control after cesarean delivery. In this study, the investigators are going to determine the doses of each of those medicines that provides optimal pain control to women undergoing cesarean delivery while limiting side effects related to those medicines. The investigators hypothesize that the doses of hydromorphone and morphine that provide optimal pain control without significant side effects will be 100 micrograms and 150 micrograms, respectively. The investigators further hypothesize that at each respective optimal dose, side effects will be less in the hydromorphone group.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria

Inclusion Criteria:

  • Women presenting for elective cesarean delivery with no major co-morbidities, including pregnancy induced co-morbidities (e.g. pre-eclampsia)
  • Singleton gestation at term (37-42 weeks)
  • Desire to have a spinal anesthesia technique for cesarean delivery

Exclusion Criteria:

  • Current or historical evidence of clinically significant medical disease or condition
  • Any contraindication to the administration of a spinal technique for anesthesia
  • History of hypersensitivity or idiosyncratic reaction to opioid medications
  • Chronic pain syndrome or current regular opioid use
  • Evidence of anticipated fetal anomalies
  • Allergy or intolerance to Tylenol, ketorolac, ibuprofen, or oxycodone
  • BMI > 40

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status

Rochester, Minn.

Mayo Clinic principal investigator

Hans Sviggum, M.D.

Closed for enrollment


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