NCT04256928

Brief Summary

A prospective, non-blinded, randomized controlled trial with the purpose of investigating, whether preoperative electrical clipping of body hair affects the risk of intraoperative contamination. The primary investigators hypothesis is this: Preoperative electrical clipping of body hair in the operative field lowers the risk of intraoperative contamination. 200 male participants, 18 years or older, with a planned primary knee replacement surgery, will be enrolled. During surgery, four microbiological samples will be taken from each participant. The primary outcome is whether there is intraoperative contamination of the surgical site or not, determined by identification of any grown bacteria from the samples. If this study finds, that the contamination rate is lowered by preoperative electrical clipping of body hair, it will provide a cost-effective method of reducing the risk of intraoperative contamination and consequent postoperative infection, a solid argument for a change of current guidelines for preoperative hair removal, and provide additional information pointing towards body hair as a possible explanation for the increased infection rate in men.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
200

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Feb 2020

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
unknown

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

First Submitted

Initial submission to the registry

January 31, 2020

Completed
5 days until next milestone

First Posted

Study publicly available on registry

February 5, 2020

Completed
10 days until next milestone

Study Start

First participant enrolled

February 15, 2020

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 30, 2020

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

July 30, 2020

Completed
Last Updated

February 10, 2020

Status Verified

February 1, 2020

Enrollment Period

5 months

First QC Date

January 31, 2020

Last Update Submit

February 6, 2020

Conditions

Outcome Measures

Primary Outcomes (1)

  • Intraoperative contamination rate

    Rate of contamination as amount of indentified bacteria cultured.

    1 year

Study Arms (2)

Intervention group

EXPERIMENTAL

This group of participants will have any body hair in the operative field clipped with an electrical clipper by hospital personnel, during preparation for planned surgery. 4 microbiological samples will be taken from all participants in this group.

Procedure: Preoperative electrical clipping

Control group

NO INTERVENTION

This group of participants serve as the control group. Any body hair in the operative field is left intact. 4 microbiological samples will be taken from all participants in this group.

Interventions

Body hair in the operative field will be clipped with an electrical clipper by hospital personnel during preparation to planned surgery.

Intervention group

Eligibility Criteria

Age18 Years+
Sexmale(Gender-based eligibility)
Gender Eligibility DetailsThe study population consists of only males, since males generally have denser body hair and a higher contamination rate than females.
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Planned primary knee replacement surgery

You may not qualify if:

  • Known skin disease
  • Use of antibiotics 4 weeks prior to surgery
  • If patients due to mental reasons, a language barrier or other reasons are unable to participate in the study
  • No body hair in the surgical field

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Ortopædkirurgisk Afdeling T, Herlev og Gentofte Hospital

Hellerup, 2900, Denmark

Location

Related Publications (20)

  • Hesselvig AB, Bjarnsholt T, Arpi M, Madsen F, Odgaard A, group ObotIs. The use of iodine impregnated incision drape in knee arthroplasty surgery - a prospective, randomized trial.

    BACKGROUND
  • Gallo J, Kolar M, Novotny R, Rihakova P, Ticha V. Pathogenesis of prosthesis-related infection. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub. 2003 Nov;147(1):27-35. doi: 10.5507/bp.2003.004.

    PMID: 15034602BACKGROUND
  • Byrne AM, Morris S, McCarthy T, Quinlan W, O'byrne JM. Outcome following deep wound contamination in cemented arthroplasty. Int Orthop. 2007 Feb;31(1):27-31. doi: 10.1007/s00264-006-0121-z. Epub 2006 Apr 4.

    PMID: 16586132BACKGROUND
  • Jonsson EO, Johannesdottir H, Robertsson O, Mogensen B. Bacterial contamination of the wound during primary total hip and knee replacement. Median 13 years of follow-up of 90 replacements. Acta Orthop. 2014 Apr;85(2):159-64. doi: 10.3109/17453674.2014.899848.

    PMID: 24650025BACKGROUND
  • Al-Maiyah M, Hill D, Bajwa A, Slater S, Patil P, Port A, Gregg PJ. Bacterial contaminants and antibiotic prophylaxis in total hip arthroplasty. J Bone Joint Surg Br. 2005 Sep;87(9):1256-8. doi: 10.1302/0301-620X.87B9.15685.

    PMID: 16129753BACKGROUND
  • Webster J, Alghamdi A. Use of plastic adhesive drapes during surgery for preventing surgical site infection. Cochrane Database Syst Rev. 2015 Apr 22;2015(4):CD006353. doi: 10.1002/14651858.CD006353.pub4.

    PMID: 25901509BACKGROUND
  • Falk-Brynhildsen K, Friberg O, Soderquist B, Nilsson UG. Bacterial colonization of the skin following aseptic preoperative preparation and impact of the use of plastic adhesive drapes. Biol Res Nurs. 2013 Apr;15(2):242-8. doi: 10.1177/1099800411430381. Epub 2012 Jan 24.

    PMID: 22278031BACKGROUND
  • Grice EA, Kong HH, Renaud G, Young AC; NISC Comparative Sequencing Program; Bouffard GG, Blakesley RW, Wolfsberg TG, Turner ML, Segre JA. A diversity profile of the human skin microbiota. Genome Res. 2008 Jul;18(7):1043-50. doi: 10.1101/gr.075549.107. Epub 2008 May 23.

    PMID: 18502944BACKGROUND
  • Arnold WV, Shirtliff ME, Stoodley P. Bacterial biofilms and periprosthetic infections. Instr Course Lect. 2014;63:385-91.

    PMID: 24720323BACKGROUND
  • Aboltins C, Daffy J, Choong P, Stanley P. Current concepts in the management of prosthetic joint infection. Intern Med J. 2014 Sep;44(9):834-40. doi: 10.1111/imj.12510.

    PMID: 24942508BACKGROUND
  • Trampuz A, Zimmerli W. Prosthetic joint infections: update in diagnosis and treatment. Swiss Med Wkly. 2005 Apr 30;135(17-18):243-51. doi: 10.4414/smw.2005.10934.

    PMID: 15965826BACKGROUND
  • Lange-Asschenfeldt B, Marenbach D, Lang C, Patzelt A, Ulrich M, Maltusch A, Terhorst D, Stockfleth E, Sterry W, Lademann J. Distribution of bacteria in the epidermal layers and hair follicles of the human skin. Skin Pharmacol Physiol. 2011;24(6):305-11. doi: 10.1159/000328728. Epub 2011 Jul 15.

    PMID: 21757977BACKGROUND
  • Jose B, Dignon A. Is there a relationship between preoperative shaving (hair removal) and surgical site infection? J Perioper Pract. 2013 Jan-Feb;23(1-2):22-5. doi: 10.1177/1750458913023001-203.

    PMID: 23413532BACKGROUND
  • Pan A, Ambrosini L, Patroni A, Soavi L, Signorini L, Carosi G, Santini C; Gruppo Italiano di Studio sulle Infezioni in Cardiochirurgia Study Group. Adherence to surgical site infection guidelines in Italian cardiac surgery units. Infection. 2009 Apr;37(2):148-52. doi: 10.1007/s15010-008-7474-8. Epub 2009 Mar 23.

    PMID: 19308319BACKGROUND
  • Broekman ML, van Beijnum J, Peul WC, Regli L. Neurosurgery and shaving: what's the evidence? J Neurosurg. 2011 Oct;115(4):670-8. doi: 10.3171/2011.5.JNS102003. Epub 2011 Jul 1.

    PMID: 21721875BACKGROUND
  • Lefebvre A, Saliou P, Lucet JC, Mimoz O, Keita-Perse O, Grandbastien B, Bruyere F, Boisrenoult P, Lepelletier D, Aho-Glele LS; French Study Group for the Preoperative Prevention of Surgical Site Infections. Preoperative hair removal and surgical site infections: network meta-analysis of randomized controlled trials. J Hosp Infect. 2015 Oct;91(2):100-8. doi: 10.1016/j.jhin.2015.06.020. Epub 2015 Aug 4.

    PMID: 26320612BACKGROUND
  • Kjonniksen I, Andersen BM, Sondenaa VG, Segadal L. Preoperative hair removal--a systematic literature review. AORN J. 2002 May;75(5):928-38, 940. doi: 10.1016/s0001-2092(06)61457-9.

    PMID: 12063942BACKGROUND
  • Shi D, Yao Y, Yu W. Comparison of preoperative hair removal methods for the reduction of surgical site infections: a meta-analysis. J Clin Nurs. 2017 Oct;26(19-20):2907-2914. doi: 10.1111/jocn.13661. Epub 2017 Mar 12.

    PMID: 27875033BACKGROUND
  • Tanner J, Woodings D, Moncaster K. Preoperative hair removal to reduce surgical site infection. Cochrane Database Syst Rev. 2006 Jul 19;(3):CD004122. doi: 10.1002/14651858.CD004122.pub3.

    PMID: 16856029BACKGROUND
  • Wilson VanVoorhis CR, Morgan BL. Understanding Power and Rules of Thumb for Determining Sample Sizes. Tutorials in Quantitative Methods for Psychology. 2007;3:43-50.

    BACKGROUND

MeSH Terms

Conditions

Intraoperative Complications

Condition Hierarchy (Ancestors)

Pathologic ProcessesPathological Conditions, Signs and Symptoms

Study Officials

  • Ditte Harder, Student

    Herlev og Gentofte Hospital, Ortopædkirurgisk Afdeling T

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Model Details: Participants will be randomized to either the intervention group (preoperative electrical clipping) clipping or the control group (leaving the body hair intact) using a 1:1 randomization ratio. The randomization is performed electronically by a medical student or the operating surgeon and the pre-assessment consultation. Hair removal is performed with an electric clipper. Clipping is performed by hospital staff on the day of surgery. The degree of body hair on both knees is photo-documented for all participants, for the intervention group after the clipping of body hair on the relevant knee has been performed. 4 microbiological samples will be taken during surgery from each participant using Copan ESwabs.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

January 31, 2020

First Posted

February 5, 2020

Study Start

February 15, 2020

Primary Completion

June 30, 2020

Study Completion

July 30, 2020

Last Updated

February 10, 2020

Record last verified: 2020-02

Data Sharing

IPD Sharing
Will not share

There is no plan to share individual partcipant data, but anonymized data can be made available upon request after publication of the study.

Locations