NCT01451762

Brief Summary

Pain after ambulatory surgery remains an unsolved problem in The United States and Europe. It is associated with delayed hospital discharge and it can result to an increased opioid consumption with adverse side effects. The concept of multimodal analgesic technique was introduced more than 15 years ago and several techniques have been studied over the years including non steroidal antiinflammatory drugs (NSAIDs), acetaminophen, gabapentoids, ketamine, local and regional anesthetic techniques. Histamine can have effects on polymodal nociceptors and C-fibers, producing pain which is further increased by neurogenically mediated release of substance P from afferent pain fibers. Several non-selective or H1 -selective histamine receptors antagonists have been demonstrated in animal models and clinical pain. Chia et al demonstrated that preoperative promethazine had opioid sparing properties without adverse sedative effects in patients undergoing abdominal hysterectomy. Diphenhydramine is an anti-histamine drug who has been found to be effective in reducing postoperative nausea and vomiting after ambulatory surgery but its effects on postoperative pain and other important outcomes after ambulatory surgery such as time to meet discharge criteria have not being studied. The MQOR 40 is a validated instrument that was specifically design to evaluate patient recovery after anesthesia and surgery. This instrument can be particularly valid to examine interventions which affect different spheres of patient recovery as is the case of diphenhydramine. The objective of this study is to determine a dose response effect of preoperative diphenhydramine on postoperative quality of recovery after ambulatory surgery. The use of preoperative diphenhydramine can improve patient's quality of recovery, decrease postoperative pain, opioid consumption and opioid related side effects after ambulatory surgery. The research question: Does a preoperative dose of diphenhydramine improve postoperative quality of recovery after ambulatory surgery? The hypothesis of this study is that preoperative diphenhydramine will improve postoperative pain, Postoperative nausea and vomiting (PONV), sleep which will translate in a better overall quality of recovery.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
90

participants targeted

Target at P50-P75 for not_applicable surgery

Timeline
Completed

Started Sep 2011

Shorter than P25 for not_applicable surgery

Geographic Reach
1 country

2 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

September 1, 2011

Completed
19 days until next milestone

First Submitted

Initial submission to the registry

September 20, 2011

Completed
24 days until next milestone

First Posted

Study publicly available on registry

October 14, 2011

Completed
11 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2012

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2012

Completed
1.5 years until next milestone

Results Posted

Study results publicly available

March 14, 2014

Completed
Last Updated

March 14, 2014

Status Verified

February 1, 2014

Enrollment Period

1 year

First QC Date

September 20, 2011

Results QC Date

October 28, 2013

Last Update Submit

February 14, 2014

Conditions

Keywords

painanesthesiasurgerypostoperative

Outcome Measures

Primary Outcomes (1)

  • Quality of Recovery 40 at 24 Hours

    Scores on QOR (quality of recovery) 40 questionnaire.The QoR-40 score, which ranges from 40 to 200, representing very poor to outstanding quality of recovery, respectively.

    24 hours post operatively

Study Arms (3)

Placebo

PLACEBO COMPARATOR

.9 normal saline IV

Drug: .9 normal saline

25 mg diphenhydramine IV

ACTIVE COMPARATOR

25 mg diphenhydramine IV administered before surgery

Drug: 25 mg diphenhydramine IV

50 mg diphenhydramine IV

ACTIVE COMPARATOR

50 mg diphenhydramine IV administered before surgery

Drug: 50 mg diphenhydramine IV

Interventions

.9 normal saline administered before surgery.

Placebo

25 mg diphenhydramine IV administered before surgery

25 mg diphenhydramine IV

50 mg diphenhydramine administered IV before surgery

50 mg diphenhydramine IV

Eligibility Criteria

Age18 Years - 64 Years
Sexfemale
Healthy VolunteersNo
Age GroupsAdult (18-64)

You may qualify if:

  • Age 18-64 years
  • Patients undergoing ambulatory surgery
  • ASA PS I, II.

You may not qualify if:

  • Chronic opioid use
  • pregnant patient or lactating patients
  • allergy to diphenhydramine
  • glaucoma
  • uncontrolled hypertension
  • asthma
  • hyperthyroidism
  • cardiovascular disease

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

Prentice Womens HOspital

Chicago, Illinois, 60611, United States

Location

Prentice Womens HOsptial

Chicago, Illinois, 60611, United States

Location

Related Publications (8)

  • Apfelbaum JL, Chen C, Mehta SS, Gan TJ. Postoperative pain experience: results from a national survey suggest postoperative pain continues to be undermanaged. Anesth Analg. 2003 Aug;97(2):534-540. doi: 10.1213/01.ANE.0000068822.10113.9E.

    PMID: 12873949BACKGROUND
  • Benhamou D, Berti M, Brodner G, De Andres J, Draisci G, Moreno-Azcoita M, Neugebauer EA, Schwenk W, Torres LM, Viel E. Postoperative Analgesic THerapy Observational Survey (PATHOS): a practice pattern study in 7 central/southern European countries. Pain. 2008 May;136(1-2):134-41. doi: 10.1016/j.pain.2007.06.028. Epub 2007 Aug 20.

    PMID: 17703887BACKGROUND
  • Kehlet H, Dahl JB. The value of "multimodal" or "balanced analgesia" in postoperative pain treatment. Anesth Analg. 1993 Nov;77(5):1048-56. doi: 10.1213/00000539-199311000-00030. No abstract available.

    PMID: 8105724BACKGROUND
  • White PF, Kehlet H. Improving postoperative pain management: what are the unresolved issues? Anesthesiology. 2010 Jan;112(1):220-5. doi: 10.1097/ALN.0b013e3181c6316e. No abstract available.

    PMID: 20010418BACKGROUND
  • Schmelz M, Schmidt R, Bickel A, Handwerker HO, Torebjork HE. Specific C-receptors for itch in human skin. J Neurosci. 1997 Oct 15;17(20):8003-8. doi: 10.1523/JNEUROSCI.17-20-08003.1997.

    PMID: 9315918BACKGROUND
  • Baird-Lambert J, Jamieson DD. Possible mediators of the writhing response induced by acetic acid or phenylbenzoquinone in mice. Clin Exp Pharmacol Physiol. 1983 Jan-Feb;10(1):15-20. doi: 10.1111/j.1440-1681.1983.tb00166.x.

    PMID: 6188566BACKGROUND
  • Rumore MM, Schlichting DA. Analgesic effects of antihistaminics. Life Sci. 1985 Feb 4;36(5):403-16. doi: 10.1016/0024-3205(85)90252-8.

    PMID: 2578597BACKGROUND
  • Raffa RB. Antihistamines as analgesics. J Clin Pharm Ther. 2001 Apr;26(2):81-5. doi: 10.1046/j.1365-2710.2001.00330.x.

    PMID: 11350529BACKGROUND

MeSH Terms

Conditions

Pain

Condition Hierarchy (Ancestors)

Neurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Limitations and Caveats

We did not obtain preoperative quality of recovery scores of patients therefore we could not examine whether the effect of diphenhydramine was dependent upon patient's baseline characteristics.

Results Point of Contact

Title
Gildasio De Oliveira MD
Organization
Northwestern University

Study Officials

  • Gildasio De Oliveira, MD

    Northwestern University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
No

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Gildasio De Oliveira, M.D. Principal Investigator

Study Record Dates

First Submitted

September 20, 2011

First Posted

October 14, 2011

Study Start

September 1, 2011

Primary Completion

September 1, 2012

Study Completion

September 1, 2012

Last Updated

March 14, 2014

Results First Posted

March 14, 2014

Record last verified: 2014-02

Locations