Patient-Driven Analgesic Protocol Selection for Post-Cesarean Pain Management

NCT02605187 — Not applicable, Completed, 160 participants, Stanford University

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RegistryNCT02605187
StatusCompleted
PhaseNot applicable
Study typeInterventional; randomized, parallel, masking: triple, treatment
Enrollment160 (Actual)
SponsorStanford University (Other)
ConditionsPostoperative Pain
InterventionsNo choice given, Choice given, Ibuprofen, Acetaminophen, Gabapentin, Morphine (low), Morphine (med), Morphine (high) (Other, drug)
Datesstart 2015-11-01, primary completion 2017-05-22, completion 2017-05-22, first posted 2015-11-16, last updated 2018-10-16
Locations1 site in United States

Related Papers Related Patents Related Grants Related Experts
All trials for Postoperative Pain All trials of No choice given All trials of Choice given

-Summary

The ability to predict pain and then apply modified treatment protocols has been limited. Current practice is for physicians to select standard post-operative pain treatment protocols without patient consultation. This study hopes to determine if patient's involvement in analgesic drug/dosage selection can optimize pain relief while minimizing related side effects. This could result in a more patient-centered care model and individualized perioperative analgesic treatment protocols based on patient's preferences, needs and expectations.

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+Detailed description

This randomized, controlled study will include a simple, preoperative questionnaire to obtain baseline demographic and obstetric data; and complete questions (that have previously been shown to be predictive of postoperative pain) from which we will determine their expected and target postoperative pain scores. These questionnaires should take less than 3-4 minutes to complete.

The subject will then be randomized into "choice" and "no choice" groups. The randomization for choice vs. no choice will be at a 1:3 ratio i.e. 1 woman will get no choice and 3 will get a choice for their analgesic protocol. All women will receive the same medications for intraoperative anesthetic management -- only the postoperative pain medications will be altered.

The no choice group will receive the current standard analgesic protocol: medium dose intrathecal morphine, and around the clock acetaminophen po q6h and ibuprofen po q6h.

The group with the choice will be offered 3 different protocols:

1\. low dose intrathecal morphine, and around the clock acetaminophen po q6h and ibuprofen po q6h. 2 medium dose intrathecal morphine, and around the clock acetaminophen po q6h and ibuprofen po q6h. 3. high dose intrathecal morphine, and around the clock acetaminophen po q6h and ibuprofen po q6h, as well as gabapentin po one time within 1 hr of delivery.

Women randomized to the "choice" group will select a protocol after being given a standard script explaining advantages and disadvantages of each protocol.

Drugs and doses utilized in the study are safe for postpartum women and within dose range routinely used at our and other institutions.

All breakthrough pain will be managed the same for all patients, and adequate analgesia will be available to treat post-operative pain.

Primary breakthrough rescue analgesic will be our standard oral opioid oxycodone managed using our current treatment algorithm. If pain 1-4 out of 10, 1 tablet (5 mg) will be offered, if pain >4 out of 10, 2 tablets (10 mg) will be offered PRN. Pain not responding to oral opioids will be offered IV morphine boluses or PCA as per standard treatment protocols. Additional analgesic options (e.g. TAP blocks) will also be available as per standard care.

Following standard Cesarean delivery, postoperative data will be collected (directly from patients and from the electronic medical record) by study investigators blinded to group assignment.

Outcome measures:

1. Pain scores at rest and on to sitting (VPS 0-10) collected at 3, 6, 12, 24, 36, 48 hours post-cesarean
2. Overall daily pain score and its deviation from target and expected pain score will be determined at 0-24 and >24-48 hours study periods.
3. Opioid use (oral and IV morphine) in the 0-24 and >24-48 hour study periods.
4. Time to first analgesic for breakthrough pain (minutes from spinal)
5. Side effect: Pruritus score (0-100), nausea score (0-100) and number of episodes of vomiting for the 0-24 and >24-48 hour post- operative periods
6. Any treatment of pruritus and/or nausea/vomiting
7. Satisfaction with postoperative analgesia score (0-100)
8. Discharge time (hours/minutes from surgery end)

Telephone follow-up for pain score, opioid use, and functional recovery will be performed at 1 week, 1 month, 3 months and 6 months post-Cesarean. The telephonic questions will last 3-4 minutes

+Arms and interventions

ArmTypeInterventionsDescription
No choiceActive comparatorOther: No choice given; Drug: Ibuprofen; Drug: Acetaminophen; Drug: Morphine (med)No choice given medium dose intrathecal morphine acetaminophen po q6h ibuprofen po q6h
Choice: low protocolExperimentalOther: Choice given; Drug: Ibuprofen; Drug: Acetaminophen; Drug: Morphine (low)Choice given low dose intrathecal morphine acetaminophen po q6h ibuprofen po q6h
Choice: medium protocolExperimentalOther: Choice given; Drug: Ibuprofen; Drug: Acetaminophen; Drug: Morphine (med)Choice given medium dose intrathecal morphine acetaminophen po q6h ibuprofen po q6h
Choice: high protocolExperimentalOther: Choice given; Drug: Ibuprofen; Drug: Acetaminophen; Drug: Gabapentin; Drug: Morphine (high)Choice given high dose intrathecal morphine acetaminophen po q6h ibuprofen po q6h gabapentin po one time dose
  • No choice given (Other): Patients are randomized to getting a choice or not getting a choice. If they do not get a choice, they receive standard dose.
  • Choice given (Other): Patients are randomized to getting a choice or not getting a choice. If they do get a choice, they will receive the protocol they select.
  • Ibuprofen (Drug): Ibuprofen 600mg po q6h
  • Acetaminophen (Drug): Acetaminophen 650mg po q6h
  • Gabapentin (Drug): Gabapentin 600mg po one time within 1 hour of delivery
  • Morphine (low) (Drug), also known as Low dose morphine: Intrathecal morphine dose 50mcg
  • Morphine (med) (Drug), also known as Medium dose morphine: Intrathecal morphine dose 150mcg
  • Morphine (high) (Drug), also known as High dose morphine: Intrathecal morphine 300mcg

+Outcome measures

Primary outcomes

  • Opioid Consumption in the 0-48 Hour Study Periods. [0-24 and 24-48 hour postoperative periods]: Opioid consumption was measured in milligram morphine equivalents in the 0-24 and 24-48 hour study periods.
  • Pain Scores [3, 6, 12, 24, 36 and 48 hours after delivery]: Pain scores at rest and at movement post-cesarean delivery. Score was rated on a scale from 0 to 10, where 0=no pain and 10=worst imaginable pain.

Secondary outcomes

  • Count of Participants Who Need Opioid Use [0-24 and 24-48 hours after delivery]: Count of participants who need opioid use through 48 hours after delivery.
  • Count of Participants With Presence of Pruritus [0-24 and 24-48 hours after delivery]: Count of participants with pruritus through 48 hours after delivery.
  • Pruritus Score at 24 and 48 After Delivery [24 and 48 hours following delivery]: Score was rated on a scale from 0 to 10, where 0=no itching and 10=most itching.
  • Count of Participants Who Need Medical Treatment of Pruritus [0-24 and 24-48 hours after delivery]: Count of participants who need medical treatment of pruritus during first 48 hours after delivery.
  • Counts of Participants With Presence of Nausea [0-48 hours after delivery]: Count of participants with nausea through 48 hours after delivery.
  • Nausea Score Score at 24 and 48 After Delivery [0-24 and 24-48 hours after delivery]: Score was rated on a scale from 0 to 10, where 0=no nausea and 10=most nausea.
  • Counts of Participants Who Need Medical Treatment for Nausea [0-24 and 24-48 hours after delivery]: Counts of participants who need medical treatment of nausea through 48 hours after delivery.
  • Average Number of Vomiting Episodes After Delivery [0-24 and 24-48 hours after delivery]
  • Time to Discharge [Delivery through discharge (average 4 days)]: Minutes from delivery until discharge.
  • Patient Overall Satisfaction With Postoperative Analgesia [24 and 48 hours after delivery]: Score was rated on a scale from 0 to 100, where 0=completely unsatisfied and 100=completely satisfied.

+Eligibility

Sex: Female, ages: 18 Years to 50 Years

Inclusion Criteria:

* Women age 18-50
* Singleton gestation
* Not in active labor
* Scheduled for their 1st, 2nd, or 3rd elective Cesarean
* Cesarean deliveries under spinal or combined spinal epidural anesthesia (with no additional epidural doses administered)

Exclusion Criteria:

* History of chronic pain, anxiety, or depression
* Unable to understand the concept of Verbal Numerical Pain Scale at the time of informed consent
* Chronic consumption of opiates, antidepressants or anticonvulsants
* Intake of opioids, NSAIDS or acetaminophen 48hrs prior to the psychophysical test
* Preeclampsia (with any severe features)
* Diabetes (not controlled with diet and needing drugs)
* Preterm delivery (<35 weeks gestation)

+Posted results

Participant flow

MilestoneNo ChoiceChoice: Low ProtocolChoice: Medium ProtocolChoice: High Protocol
Started40218316
Completed32197215
Not completed82111

Outcome results

  • Opioid Consumption in the 0-48 Hour Study Periods. (Primary), Median, milligram morphine equivalents (MMEQ): No Choice 10 (0 to 15); Choice: Low Protocol 5 (0 to 20); Choice: Medium Protocol 10 (0 to 25); Choice: High Protocol 5 (0 to 30)
  • Pain Scores (Primary), Mean, units on a scale: No Choice 1.6 +/- 2.0; Choice: Low Protocol 1.8 +/- 2.0; Choice: Medium Protocol 1.9 +/- 2.1; Choice: High Protocol 2.2 +/- 2.2 (p 0.882)
  • Count of Participants Who Need Opioid Use (Secondary), Count of participants, Participants: No Choice 27; Choice: Low Protocol 14; Choice: Medium Protocol 50; Choice: High Protocol 13 (p 0.311)
  • Count of Participants With Presence of Pruritus (Secondary), Count of participants, Participants: No Choice 27; Choice: Low Protocol 11; Choice: Medium Protocol 63; Choice: High Protocol 13 (p 0.092)
  • Pruritus Score at 24 and 48 After Delivery (Secondary), Mean, units on a scale: No Choice 4.2 +/- 2.7; Choice: Low Protocol 1.7 +/- 2.3; Choice: Medium Protocol 3.7 +/- 2.5; Choice: High Protocol 4.5 +/- 2.7 (p 0.006)
  • Count of Participants Who Need Medical Treatment of Pruritus (Secondary), Count of participants, Participants: No Choice 7; Choice: Low Protocol 2; Choice: Medium Protocol 12; Choice: High Protocol 3 (p 0.759)
  • Counts of Participants With Presence of Nausea (Secondary), Count of participants, Participants: No Choice 11; Choice: Low Protocol 7; Choice: Medium Protocol 33; Choice: High Protocol 10 (p 0.281)
  • Nausea Score Score at 24 and 48 After Delivery (Secondary), Mean, units on a scale: No Choice 1.3 +/- 2.4; Choice: Low Protocol 1.1 +/- 2.0; Choice: Medium Protocol 1.5 +/- 2.4; Choice: High Protocol 1.8 +/- 1.7 (p 0.786)
  • Counts of Participants Who Need Medical Treatment for Nausea (Secondary), Count of participants, Participants: No Choice 8; Choice: Low Protocol 9; Choice: Medium Protocol 20; Choice: High Protocol 9 (p 0.057)
  • Average Number of Vomiting Episodes After Delivery (Secondary), Mean, vomiting episodes: No Choice 0.6 +/- 1.5; Choice: Low Protocol 0.3 +/- 1.0; Choice: Medium Protocol 0.5 +/- 1.4; Choice: High Protocol 1.3 +/- 2.0 (p 0.226)
  • Time to Discharge (Secondary), Mean, minutes: No Choice 4771.9 +/- 1231.2; Choice: Low Protocol 4652.1 +/- 1006.7; Choice: Medium Protocol 5278.9 +/- 1410.3; Choice: High Protocol 5722.3 +/- 1391.9 (p 0.036)
  • Patient Overall Satisfaction With Postoperative Analgesia (Secondary), Mean, units on a scale: No Choice 87.2 +/- 12.7; Choice: Low Protocol 90.3 +/- 10.4; Choice: Medium Protocol 94.1 +/- 9.5; Choice: High Protocol 93.3 +/- 7.7 (p 0.019)

Adverse events

Time frame: Delivery to discharge (average 4 days)

ArmDeathsSerious adverse eventsOther adverse events
No Choice0/32 (0.0%)0/32 (0.0%)3/32 (9.4%)
Choice: Low Protocol0/19 (0.0%)0/19 (0.0%)1/19 (5.3%)
Choice: Medium Protocol0/72 (0.0%)0/72 (0.0%)6/72 (8.3%)
Choice: High Protocol0/15 (0.0%)0/15 (0.0%)3/15 (20.0%)

Other adverse events by term

TermOrgan systemNo ChoiceChoice: Low ProtocolChoice: Medium ProtocolChoice: High Protocol
Pain due to Bakri balloon and vag packSurgical and medical procedures1/320/190/720/15
received methergine for Postpartum hemorrhagePregnancy, puerperium and perinatal conditions1/320/190/721/15
Itching rash on abdomenSkin and subcutaneous tissue disorders1/320/190/720/15
MigrainNervous system disorders0/321/190/720/15
Severe pre E diagnosed postpartumPregnancy, puerperium and perinatal conditions0/320/191/720/15
misoprostol used at deliveryPregnancy, puerperium and perinatal conditions0/320/191/720/15
VomitGeneral disorders0/320/191/720/15
preeclampsiaPregnancy, puerperium and perinatal conditions0/320/191/720/15
SurrogateGeneral disorders0/320/191/720/15
Urinary Tract InfectionsInfections and infestations0/320/191/720/15
Used On Q pumpGeneral disorders0/320/190/721/15
Extended stayGeneral disorders0/320/190/721/15

+Locations (1)

FacilityCityCountryStatus
Lucille Packard Children's HospitalPalo Alto, CaliforniaUnited States

+Publications

  • Eisenach JC, Pan P, Smiley RM, Lavand'homme P, Landau R, Houle TT. Resolution of pain after childbirth. Anesthesiology. 2013 Jan;118(1):143-51. doi: 10.1097/ALN.0b013e318278ccfd. PMID 23249931
  • Eisenach JC, Pan PH, Smiley R, Lavand'homme P, Landau R, Houle TT. Severity of acute pain after childbirth, but not type of delivery, predicts persistent pain and postpartum depression. Pain. 2008 Nov 15;140(1):87-94. doi: 10.1016/j.pain.2008.07.011. Epub 2008 Sep 24. PMID 18818022
  • Kehlet H, Jensen TS, Woolf CJ. Persistent postsurgical pain: risk factors and prevention. Lancet. 2006 May 13;367(9522):1618-25. doi: 10.1016/S0140-6736(06)68700-X. PMID 16698416
  • Lavand'homme P. Perioperative pain. Curr Opin Anaesthesiol. 2006 Oct;19(5):556-61. doi: 10.1097/01.aco.0000245284.53152.1f. PMID 16960491
  • Results publication: Carvalho B, Sutton CD, Kowalczyk JJ, Flood PD. Impact of patient choice for different postcesarean delivery analgesic protocols on opioid consumption: a randomized prospective clinical trial. Reg Anesth Pain Med. 2019 May;44(5):578-585. doi: 10.1136/rapm-2018-100206. Epub 2019 Mar 13. PMID 30867278

+Study documents

+Investigators