Effects of Breast Feeding on Post-Cesarean and Post-Vaginal Delivery Pain

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

130 participants

Study Classification

OBSERVATIONAL

Study Start Date

2011-08-31

Study Completion Date

2014-12-31

Brief Summary

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Oxytocin is a hormone that is released in response to distension of the cervix and uterus during labor, and after breast feeding as a result of nipple stimulation. In addition to oxytocin facilitating birth and breastfeeding, oxytocin has a number of effects on maternal behavior including bonding, social recognition, anxiolysis, sexual arousal.

The role of oxytocin in pain modulation has recently been highlighted. Intranasal or intrathecal (spinal) administration has been found to impact pain modulation. The administration of intravenous oxytocin has not provided effective analgesia because oxytocin is unable to pass to your brain. The role of breastfeeding on analgesia is poorly investigated, which is why we are carrying out this study.

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Detailed Description

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Patients will be recruited by a member of the research team when the patient is admitted to labor or delivery and when they are in the post-natal floor.

Patients will be divided into two groups initially depending on mode of delivery, vaginal vs. cesarean. The vaginal delivery group will be randomized into three groups. One group will be told that we are investigating the effect of oxytocin on pain intensity, the second group will be told that it reduces pain intensity, the third group will be told that it increases pain intensity.

The cesarean group are not going to be randomized, they will be told we are investigating the effect of oxytocin on pain intensity.

Demographic and obstetric will be collected by patient questioning as well as from the medical record on Day 1 post delivery. Analgesia data from the medical record will also be collected on days 1 and 2 post-delivery.

The primary outcome measure will be change in pain scores (0=no pain, 10=worse pain imaginable) during and after breastfeeding compared to pain before. We will examine both vaginal, cramping and surgical pain as appropriate.

The patients will be given a breastfeeding diary to complete, which will record the average pain scores (0-10) before, during and after each breastfeed.

Secondary outcome measure will include: Depression, PTDS, and other outcome measures. Patients will also be asked to complete pain intensity and depression (The Edinburgh Depression Scale) and a PTSD questionnaires. We will also determine pain preferences as relating to pain intensity and duration by another questionnaire.

At 6 weeks post-delivery, a member of the research team will call the participant to ask questions regarding current pain scores, success of breastfeeding and weight of the baby.

The study end-point is 6 weeks post-delivery. We will debrief participants who had deception at completion of the whole study.

Conditions

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Pain

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Nocebo

Told breastfeeding may worsen pain

No interventions assigned to this group

No treatment

Told nothing

No interventions assigned to this group

Placebo

Told will improve pain

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

1. Age 18 - 40 yrs
2. ASA 1 or 2
3. Singleton gestation
4. Greater or equal to 37 weeks gestation
5. Vaginal delivery
6. Scheduled cesarean delivery with a Pfannenstiel incision

Exclusion Criteria

1. Chronic pain
2. Patients prescribed regular analgesia medication ante-natally
3. Substance abuse
4. Classical cesarean incision
5. Emergency cesarean delivery
6. Patients not planning to breastfeed
7. Psychiatric or cognitive disorder, including anxiety or depression
8. Physicians, labor and delivery nurses, midwives

Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No