Abstract:
BACKGROUND:The risk of maternal mortality and morbidity (particularly postoperative infection) is higher for caesarean section than for vaginal birth. With the increasing rate of caesarean section, it is important that the risks to the mother are minimised as far as possible. This review focuses on different forms and methods for preoperative skin preparation to prevent infection. OBJECTIVES:To compare the effects of different agent forms and methods of preoperative skin preparation for preventing postcaesarean infection. SEARCH METHODS:We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (26 June 2014) and the reference lists of all included studies and review articles. SELECTION CRITERIA:Randomised and quasi-randomised trials, including cluster-randomised trials, evaluating any type of preoperative skin preparation agents, forms and methods of application for caesarean section. DATA COLLECTION AND ANALYSIS:Three review authors independently assessed all potential studies for inclusion, assessed risk of bias and extracted the data using a predesigned form. Data were checked for accuracy. MAIN RESULTS:We included six trials with a total of 1522 women. No difference was found in the primary outcomes of either wound infection or endometritis. Two trials of 1294 women, compared drape with no drape (one trial using iodine and the other using chlorhexidine) and found no significant difference in wound infection (risk ratio (RR) 1.29; 95% confidence interval (CI) 0.97 to 1.71). One trial of 79 women comparing alcohol scrub and iodophor drape with iodophor scrub without drape reported no wound infection in either group. One trial of 50 women comparing parachlorometaxylenol plus iodine with iodine alone reported no significant difference in wound infection (RR 0.33; 95% CI 0.04 to 2.99).Two trials reported endometritis, one trial comparing alcohol scrub and iodophor drape with iodophor scrub only found no significant difference (RR 1.62; 95% CI 0.29 to 9.16). The other trial of 50 women comparing parachlorometaxylenol plus iodine with iodine alone reported no significant difference in endometritis (RR 0.88; 95% CI 0.56 to 1.38). One trial of 60 women comparing chlorhexidine gluconate with povidone-iodine reported significant lower rates of bacterial growth at 18 hours after caesarean section (RR 0.23, 95% CI 0.07 to 0.70). No difference was found in the secondary outcome of either length of stay or reduction of skin bacteria colony count. No trial reported other maternal outcomes, i.e. maternal mortality, repeat surgery and re-admission resulting from infection. One trial, which was only available as an abstract, investigated the effect of skin preparation on neonatal adverse events and found cord blood iodine concentration to be significantly higher in the iodine group.Most of the risk of bias in the included studies was unclear in selection bias and attrition bias. The quality of the evidence using GRADE was low for wound infection comparing drape versus no drape, one-minute alcohol scrub with iodophor drape versus five-minute iodophor scrub without drape, and parachlorometaxylenol with iodine versus iodine alone. The quality of the evidence for wound infection comparing chlorhexidine gluconate with povidone-iodine was very low. AUTHORS' CONCLUSIONS:This review found that chlorhexidine gluconate compared with iodine alone was associated with lower rates of bacterial growth at 18 hours after caesarean section. However, this outcome was judged as very low quality of evidence. Little evidence is available from the included randomised controlled trials to evaluate different agent forms, concentrations and methods of skin preparation for preventing infection following caesarean section. Therefore, it is not yet clear what sort of skin preparation may be most efficient for preventing postcaesarean wound and surgical site infection.There is a need for high-quality, properly designed randomised controlled trials with larger sample sizes in this field. High priority questions include comparing types of antiseptic (especially iodine versus chlorhexidine), the timing and duration of applying the antiseptic (especially previous night versus day of surgery, and application methods (scrubbing, swabbing and draping).
journal_name
Cochrane Database Syst Revjournal_title
The Cochrane database of systematic reviewsauthors
Hadiati DR,Hakimi M,Nurdiati DS,Ota Edoi
10.1002/14651858.CD007462.pub3subject
Has Abstractpub_date
2014-09-17 00:00:00pages
CD007462issue
9issn
1469-493Xpub_type
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