Effect of gentamicin in combination with metronidazole to prevent of post caesarean infection

ISRCTN ISRCTN44462542
DOI https://doi.org/10.1186/ISRCTN44462542
Secondary identifying numbers N/A
Submission date
05/09/2011
Registration date
12/09/2011
Last edited
10/02/2016
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Infections and Infestations
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English Summary

Background and study aims
A caesarean section is an operation in which an incision (cut) is made through the abdomen and uterus of a pregnant woman to deliver a baby. It is a common operation worldwide. The risk of infection after this operation is five times higher compared to vaginal birth (normal birth). Anti-bacterial drugs are usually given to the woman about to undergo caesarean section 30-60 minutes before the operation to reduce the risk of infection after the operation. Provision of a single dose of these drugs is recommended by many centers because repeated or multiple doses not have any added advantage. Infection after caesarean section is among the top five causes of admission at Bugando medical centre post delivery wards. We do not have a regulated course of antibacterial drugs which has resulted from our own studies. As a result, most of the time, pregnant women who are planned for caesarean section receive repeated doses of antibacterial drugs. The aim of this study is to assess the effectiveness of a single dose of gentamicin in combination with metronidazole compared to multiple doses of the same drugs in the prevention of infection after caesarean section.

Who can participate?
All pregnant women who present in the delivery room with labor pain and later planned for caesarean section.

What does the study involve?
Participants are randomly allocated into two groups. Participants in one group receive a single dose of gentamicin in combination with metronidazole 30-60 minutes before their operation and participants in the second group receive the same drugs before the operation and continue with metronidazole eight hourly for 24 hours.

What are the possible benefits and risks of participating?
There are no risks in participating in this study because we are not using a new treatment. The treatments we are planning to use are the ones commonly used at this department.

Where is the study run from?
Bugando medical centre, Mwanza (Tanzania)

When is the study starting and how long is it expected to run for?
October 2011 to June 2012

Who is funding the study?
Weill Bugando University College of Health Sciences (Tanzania)

Who is the main contact?
Dr Fadhili Lyimo
fadhili1810@yahoo.com

Contact information

Dr Anthony Massinde
Scientific

Bugando University College of Health Sciences
Box 1464
Mwanza
-
Tanzania

Phone +255 (0)754 465 957
Email amassinde@bugando.ac.tz

Study information

Study designInterventional open-label two-armed randomised single-centre study
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleEfficacy of single dose of gentamicin in combination with metronidazole versus multiple doses for prevention of post caesarean infection: a randomised controlled trial
Study hypothesisThere is a significant difference in cumulative incidence of post caesarian infection between clients under single dose antibiotic regime and women under multiple doses antibiotic regimen.
Ethics approval(s)Bugando University College of Health Sciences Research Committee, 22/08/2011, ref: BREC/001/39/2011
ConditionPost-caesarean infection
InterventionStudy participants will be randomly allocated in two study arms, A and B.

Study Arm A:
Will receive a single intravenous single dose gentamicin (160mg) plus metronidazole 500mg 30-60 minutes before operation

Study Arm B:
Will be those who will receive multiple doses; gentamicin (160mg) plus metronidazole (500mg) 30-60 minutes after operation for 24 hours

Simple randomization will be used, 200 similar envelopes will be prepared and inside each of the 100 sealed envelopes there will be small paper marked “study arm A”. The remaining sealed envelopes will contain small papers marked “study arm B”. All sealed envelopes will be mixed thoroughly in a box before selection of an envelope is done. Each study participant will select one sealed envelope and give it to the researcher to open. Then will get antibiotic prophylaxis according to her allocated group.
Intervention typeDrug
Pharmaceutical study type(s)
PhaseNot Applicable
Drug / device / biological / vaccine name(s)Gentamicin, metronidazole
Primary outcome measure1. Surgical site infection will be our primary outcome - the assessment for any evidence of surgical site infection will be done 72 hours after caesarian section as well as on follow up days (day 7 and day 30 post caesarean section)
2. Presence of fever (febrile morbidity), signs and symptoms of abdominal wound infection or endometritis will indicate surgical site infection
3. Febrile morbidity will be defined by temperature above 380 C at least 4 hours apart on two or more occasions excluding the first 24 hours after delivery
4. Abdominal wound infection will be defined by partial or total dehiscence or presence of purulent or serous discharge from the wound with indurations, warmth and tenderness
5. Endometritis will be defined by presence of fever (380 C or above) in association with one or more of the following: uterine tenderness or foul smelling lochia
6. In both groups, the bladder catheter will be removed after 24 hours. Wound care will follow the standard scheme in both groups, the occlusive dressing applied in the theatre and removed after 48 hours.
7. Patient will be discharged on day 3 if there was no sign of infection or complication and asked to return on day 7 in order to remove stitches. Then she will come on the day 30 post caesarean section for reassessment. On day 7 and day 30, axillary temperature will be measured, and abdomen and wound will be examined for signs of infection and sutures will be removed on first follow up visit.
Secondary outcome measuresNo secondary outcome measures
Overall study start date01/10/2011
Overall study end date30/06/2012

Eligibility

Participant type(s)Patient
Age groupAdult
SexFemale
Target number of participants652 participants will be enrolled into the study, 326 in each study allocation arm
Participant inclusion criteriaAll pregnant women planned for emergency caesarean section and have consented for the study
Participant exclusion criteria1. Fever (temperature of 38 degrees and above)
2. Prolonged obstructed labor
3. Prolonged premature rupture of membranes (rupture of membrane more than twelve hours)
4. Features of chorioamnionitis (i.e. foul smelling lochia, uterine tenderness associated with fever)
5. Allergic to the antibiotics used in the study
6. Used antibiotics in the 24 hours preceding the operation
7. Will receive blood transfusion before, during or after caesarian section
8. Non pregnant women
Recruitment start date01/10/2011
Recruitment end date30/06/2012

Locations

Countries of recruitment

  • Tanzania

Study participating centre

Bugando University College of Health Sciences
Mwanza
-
Tanzania

Sponsor information

Bugando University College of Health Sciences (Tanzania)
University/education

Funders

Funder type

University/education

Bugando University College of Health Sciences (Tanzania)

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Protocol article protocol 21/06/2012 Yes No

Editorial Notes

10/02/2016: Plain English summary added

On 22/03/2012 the following changes were made to the trial record:
1. The overall trial end date was changed from 30/03/2012 to 30/06/2012.
2. The target number of participants was changed from '200 participants will be enrolled into the study, 100 in each study allocation arm' to '652 participants will be enrolled into the study, 326 in each study allocation arm'.