Management of Wound Complications From Cesarean Delivery

Comparing approaches to identify live births using the Transformed Medicaid Statistical Information System

OBJECTIVE

To evaluate the performance of different approaches for identifying live births using Transformed Medicaid Statistical Information System Analytic Files (TAF).

DATA SOURCES

The primary data source for this study were TAF inpatient (IP), other services (OT), and demographic and eligibility files. These data contain administrative claims for Medicaid enrollees in all 50 states and the District of Columbia from January 1, 2018 to December 31, 2018.

STUDY DESIGN

We compared five approaches for identifying live birth counts obtained from the TAF IP and OT data with the Centers for Disease Control and Prevention (CDC) Natality data-the gold standard for birth counts at the state level.

DATA COLLECTION/EXTRACTION METHODS

The five approaches used varying combinations of diagnosis and procedure, revenue, and place of service codes to identify live births. Approaches 1 and 2 follow guidance developed by the Centers for Medicare and Medicaid Services (CMS). Approaches 3 and 4 build on the approaches developed by CMS by including all inpatient hospital claims in the OT file and excluding codes related to delivery services for infants, respectively. Approach 5 applied Approach 4 to only the IP file.

PRINCIPAL FINDINGS

Approach 4, which included all inpatient hospital claims in the OT file and excluded codes related to infants to identify deliveries, achieved the best match of birth counts relative to CDC birth record data, identifying 1,656,794 live births-a national overcount of 3.6%. Approaches 1 and 3 resulted in larger overcounts of births (20.5% and 4.5%), while Approaches 2 and 5 resulted in undercounts of births (-3.4% and -6.8%).

CONCLUSIONS

Including claims from both the IP and OT files, and excluding codes unrelated to the delivery episode and those specific to services rendered to infants improves accuracy of live birth identification in the TAF data.

Obesity in Pregnancy: ACOG Practice Bulletin, Number 230

Obstetrician-gynecologists are the leading experts in the health care of women, and obesity is the most common medical condition in women of reproductive age. Obesity in women is such a common condition that the implications relative to pregnancy often are unrecognized, overlooked, or ignored because of the lack of specific evidence-based treatment options. The management of obesity requires long-term approaches ranging from population-based public health and economic initiatives to individual nutritional, behavioral, or surgical interventions. Therefore, an understanding of the management of obesity during pregnancy is essential, and management should begin before pregnancy and continue through the postpartum period. Although the care of the obese woman during pregnancy requires the involvement of the obstetrician or other obstetric care professional, additional health care professionals, such as nutritionists, can offer specific expertise related to management depending on the comfort level of the obstetric care professional. The purpose of this Practice Bulletin is to offer an integrated approach to the management of obesity in women of reproductive age who are planning a pregnancy.

Skin and subcutaneous fascia closure at caesarean section to reduce wound complications: the closure randomised trial

BACKGROUND

Wound infection is a common complication following caesarean section. Factors influencing the risk of infection may include the suture material for skin closure, and closure of the subcutaneous fascia. We assessed the effect of skin closure with absorbable versus non-absorbable suture, and closure versus non-closure of the subcutaneous fascia on risk of wound infection following Caesarean section.

METHODS

Women undergoing caesarean birth at an Adelaide maternity hospital were eligible for recruitment to a randomised trial using a 2 × 2 factorial design. Women were randomised to either closure or non-closure of the subcutaneous fascia and to subcuticular skin closure with an absorbable or non-absorbable suture. Participants were randomised to each of the two interventions into one of 4 possible groups: Group 1 - non-absorbable skin suture and non-closure of the subcutaneous fascia; Group 2 - absorbable skin suture and non-closure of the subcutaneous fascia; Group 3 - non-absorbable skin suture and closure of the subcutaneous fascia; and Group 4 - absorbable skin suture and closure of the subcutaneous fascia. The primary outcomes were reported wound infection and wound haematoma or seroma within the first 30 days after birth.

RESULTS

A total of 851 women were recruited and randomised, with 849 women included in the analyses (Group 1: 216 women; Group 2: 212 women; Group 3: 212 women; Group 4: 211 women). In women who underwent fascia closure, there was a statistically significant increase in risk of wound infection within 30 days post-operatively for those who had skin closure with an absorbable suture (Group 4), compared with women who had skin closure with a non-absorbable suture (Group 3) (adjusted RR 2.17; 95% CI 1.05, 4.45; p = 0.035). There was no significant difference in risk of wound infection for absorbable vs non-absorbable sutures in women who did not undergo fascia closure.

CONCLUSION

The combination of subcutaneous fascia closure and skin closure with an absorbable suture may be associated with an increased risk of reported wound infection after caesarean section.

TRIAL REGISTRATION

Prospectively registered with the Australian and New Zealand Clinical Trials Registry, number ACTRN12608000143325 , on the 20th March, 2008.

Negative pressure wound therapy system in extremely obese women after cesarean delivery compared with standard dressing

Objective: Data regarding the use of the negative pressure wound therapy (NPWT) system in extremely obese women (body mass index [BMI] ≥ 50 kg/m²) undergoing cesarean delivery are limited. We sought to examine the rate of wound complications in extremely obese women according to postcesarean dressings (NPWT [PICO, Smith & Nephew, St. Peterburg, FL] versus standard dressings).Study design: This was a retrospective cohort study of all extremely obese women (BMI ≥ 50 kg/m²) at 23 weeks' gestation or greater who underwent cesarean delivery at an academic teaching hospital in Washington, DC, between January 2009 and September 2017. During this period, a PICO Single Use NPWT system was used at our institution. Women who missed a postpartum follow-up were excluded. Since 2014, Medstar Washington Hospital Center recommended the use of a PICO Single Use NPWT system for extremely obese women at the time of delivery. However, the ultimate decision to use the NPWT was made by attending physicians, considering the cost of the device and the risk of wound complication. Our primary outcome was a composite of cellulitis, hematoma/seroma, and wound dehiscence. Coarsened exact matching with k-to-k solution was performed using BMI, rupture of membranes, and labor.Results: Of 179 extremely obese women, 73 (40.8%) and 106 (59.2%) received NPWT and standard dressings, respectively; 61 women who received NPWT were matched to 61 women who received standard dressings. The rates of the primary outcome in the unmatched cohort were similar between women who received NPWT and those who received standard dressings (20.6 versus 16.0%; p = .44). The rates of primary outcome remained similar between women who received NPWT and those who received standard dressings after matching (18.0 versus 18.0%; p = 1.00).Conclusion: In extremely obese women undergoing cesarean delivery, prophylactic PICO NPWT was not associated with a decreased risk of the primary outcome compared with standard dressings. A large prospective randomized controlled trial would be useful to answer if NPWT is beneficial for extremely obese women.

Timing of staples and dressing removal after cesarean delivery (the SCARR study)

OBJECTIVE

To investigate optimal timing of dressing and staples removal after cesarean delivery (CD).

METHODS

This prospective clustered clinical trial enrolled women undergoing CD between January 1, 2013, and October 31, 2014, at Hadassah-Hebrew University Hospital, Jerusalem. Women were assigned to one of five clusters differing in timing of dressing and staples removal. We assessed scar healing at 6 weeks.

RESULTS

920 women completed telephone questionnaires. Wound healing did not differ significantly among the clusters: the healing complication rate was 21% in the control group (n=46) and ranged from 18% to 26% (n=27-50) in clusters two to five (P=0.49). More healing complications were observed in women with a body mass index (BMI) of more than 35 kg/m² versus 35 kg/m² or less (P=0.016), urgent versus elective CD (P=0.013), preterm premature rupture of the membranes (PPROM) versus intact membranes (P=0.016), and chorioamnionitis at delivery versus no chorioamnionitis (P=0.001). 586 (64%) women underwent physician assessment at staples removal and at 6 weeks post CD.

CONCLUSIONS

Timing of dressing and staples removal has no effect on CD scar healing in low- and high-risk parturients. A BMI of more than 35 kg/m² , urgent CD, PPROM, and chorioamnionitis were associated with mal-healing, regardless of cluster. Clinicaltrials.gov: NCT01724255.

Skin Microbiota in Obese Women at Risk for Surgical Site Infection After Cesarean Delivery

The obesity pandemic in the obstetrical population plus increased frequency of Cesarean delivery (CD) has increased vulnerability to surgical site infection (SSI). Here we characterized the microbiome at the site of skin incision before and after CD. Skin and relevant surgical sites were sampled before and after surgical antisepsis from obese (n = 31) and non-obese (n = 27) pregnant women. We quantified bacterial biomass by qPCR, microbial community composition by 16sRNA sequencing, assigned operational taxonomic units, and stained skin biopsies from incision for bacteria and biofilms. In obese women, incision site harbors significantly higher bacterial biomass of lower diversity. Phylum Firmicutes predominated over Actinobacteria, with phylotypes Clostridales and Bacteroidales over commensal Staphylococcus and Propionbacterium spp. Skin dysbiosis increased post-surgical prep and at end of surgery. Biofilms were identified post-prep in the majority (73%) of skin biopsies. At end of surgery, incision had significant gains in bacterial DNA and diversity, and obese women shared more genera with vagina and surgeon's glove in CD. Our findings suggest microbiota at incision differs between obese and non-obese pregnant women, and changes throughout CD. An interaction between vaginal and cutaneous dysbiosis at the incision site may explain the a priori increased risk for SSI among obese pregnant women.

Prophylactic negative-pressure wound therapy after cesarean is associated with reduced risk of surgical site infection: a systematic review and meta-analysis

OBJECTIVE

The objective of the study was to assess the effect of prophylactic negative-pressure wound therapy on surgical site infections and other wound complications in women after cesarean delivery.

DATA SOURCES

We searched Ovid Medline, Embase, SCOPUS, Cochrane Database of Systematic Reviews, and ClinicalTrials.gov.

STUDY ELIGIBILITY CRITERIA

We included randomized controlled trials and observational studies comparing prophylactic negative-pressure wound therapy with standard wound dressing for cesarean delivery.

STUDY APPRAISAL AND SYNTHESIS METHODS

The primary outcome was surgical site infection after cesarean delivery. Secondary outcomes were composite wound complications, wound dehiscence, wound seroma, endometritis, and hospital readmission. Heterogeneity was assessed using Higgin's I2. Relative risks with 95% confidence intervals were calculated using random-effects models.

RESULTS

Six randomized controlled trials and 3 cohort studies in high-risk mostly obese women met inclusion criteria and were included in the meta-analysis. Six were full-text articles, 2 published abstracts, and 1 report of trial results in ClinicalTrials.gov. Studies were also heterogeneous in the patients included and type of negative-pressure wound therapy device. The risk of surgical site infection was significantly lower with the use of prophylactic negative-pressure wound therapy compared with standard wound dressing (7 studies: pooled risk ratio, 0.45; 95% confidence interval, 0.31-0.66; adjusted risk ratio, -6.0%, 95% confidence interval, -10.0% to -3.0%; number needed to treat, 17, 95% confidence interval, 10-34). There was no evidence of significant statistical heterogeneity (I2 = 9.9%) or publication bias (Egger P = .532). Of the secondary outcomes, only composite wound complications were significantly reduced in patients receiving prophylactic negative-pressure wound therapy compared with standard dressing (9 studies: pooled risk ratio, 0.68, 95% confidence interval, 0.49-0.94).

CONCLUSION

Studies on the effectiveness of prophylactic negative-pressure wound therapy at cesarean delivery are heterogeneous but suggest a reduction in surgical site infection and overall wound complications. Larger definitive trials are needed to clarify the clinical utility of prophylactic negative-pressure wound therapy after cesarean delivery.

Healthcare Strategies for Reducing Pregnancy-Related Morbidity and Mortality in the Postpartum Period

The majority of pregnancy-related deaths in the United States occur in the postpartum period, after a woman gives birth. Many of these deaths are preventable. Researchers and health care providers have been focusing on designing and implementing strategies to eliminate preventable deaths and ethnic and racial disparities. Six healthcare strategies for reducing postpartum maternal morbidity and mortality will be described. These strategies, if provided in an equitable manner by all providers to all women, will assist in closing the disparity in outcomes between black women and women of all other races and ethnicities who give birth throughout the United States.

Effect of Maternal Obesity on Maternal-Fetal Transfer of Preoperative Cefazolin at Cesarean Section

OBJECTIVES

American Congress of Obstetricians and Gynecologists recommends a single dose of antibiotic prophylaxis before all cesarean sections (C/S). This recommendation is based on pharmacokinetic studies that include only non-obese patients. We sought to evaluate 1) cefazolin plasma concentrations among obese and non-obese patients after administration of a 2-g cefazolin dose for prevention of surgical wound infections, and 2) whether cefazolin concentration in fetal circulation may be protective against pathogens that cause early onset neonatal sepsis.

METHODS

Maternal and fetal cefazolin plasma concentrations were compared between obese (body mass index [BMI] ≥ 30 kg/m²) and non-obese (BMI < 25 kg/m²) healthy, term pregnant women undergoing scheduled C/S. Liquid chromatographic-tandem mass spectrometric (LC-MS/MS) methods were used for quantification of total and free cefazolin concentrations in maternal blood (MB) and umbilical cord blood (UCB).

RESULTS

Eight women were screened and consented. There was no difference between groups in MB total and free cefazolin concentrations. All MB samples had total and free cefazolin concentrations greater than the minimum inhibitory concentration 90 (MIC90) for Group B Streptococcus (GBS), Staphylococcus aureus, and Escherichia coli. All UCB samples had total and free cefazolin concentrations greater than MIC90 for GBS and S aureus, even when administered as briefly as 18 minutes before delivery. A lower concentration of total cefazolin was detected in UCB of neonates of obese women compared to non-obese women (p > 0.05).

CONCLUSIONS

Administration of 2 g of cefazolin to women undergoing scheduled C/S might be an adequate prophylactic dose for surgical wound infection in both non-obese and obese patients; and cefazolin concentration in fetal circulation may be protective against GBS and S aureus.

Early wound dressing removal after scheduled cesarean delivery: a randomized controlled trial

BACKGROUND

Following cesarean delivery, wound dressings are typically left over the incision for 24-48 hours.

OBJECTIVE

The objective of this study was to determine if early removal of the wound dressing at 6 hours postsurgery has any effect on wound complications.

STUDY DESIGN

This was a randomized, controlled study from August 2013 through January 2015 in which 320 low-risk women aged 18-44 years having scheduled primary, first repeat, or second repeat cesarean delivery were randomized for wound dressing removal at either 6 or 24 hours postsurgery. Skin closure was with staples in all cases. The primary outcome was postoperative wound complications, defined as infection, disruption (skin dehiscence or deeper), or seroma/hematoma. Also examined was patient satisfaction with timing of their ability to wash or shower after wound dressing removal. A sample size of 160 women in each group was needed to show a 100% increase in the wound complication incidence from 12-24%.

RESULTS

A total of 320 women were randomized, 160 in the 6-hour group and 160 in the 24-hour group. The proportion of primary and repeat cesarean deliveries was similar. The incidence of wound complications was not significantly different between the groups, 13.8% in the 6-hour group and 12.5% in the 24-hour group (odds ratio, 1.16; 95% confidence interval, 0.58-2.14). More women were pleased and satisfied with their ability to wash or shower soon after wound dressing removal in the 6-hour group (75.6%) compared to the 24-hour group (56.9%; odds ratio, 2.35; 95% confidence interval, 1.46-3.79).

CONCLUSION

Early removal of the wound dressing at 6 hours following cesarean delivery has no detrimental effect on incision healing. Early removal permits the woman to attend to personal hygiene earlier, making her more satisfied with her postoperative recovery.

Cesarean Delivery with External Negative Pressure Dressing System: A Retrospective Cohort Study

Objective  To determine whether the use of external negative pressure dressing system (ENPDS) can reduce the incidence of wound complications after cesarean delivery (CD) compared with traditional dressings. Methods  Retrospective review of all patients undergoing CD between November 2011 and March 2013. Information was collected on demographics, body mass index (BMI), duration of labor, pre- and postnatal infections, incision and dressing type, and postoperative course. Comparisons were made between traditional dressing and an external negative pressure dressing system. Results  Of 970 patients included in the study, wound complications occurred in 50 patients (5.2%). Comparisons of ENPDS ( n  = 103) and traditional dressing ( n  = 867) groups revealed higher wound complications for ENPDS with odds ratio (OR) 3.37 and confidence interval (CI) 1.68 to 6.39. ENPDS was more commonly used in patients with BMI > 30 and preexisting diabetes. After controlling for BMI and pregestational diabetes in logistic regression analysis, ENPDS was equivalent to traditional dressing for risk of wound complications with an adjusted OR 2.76 (CI 0.97 to 7.84), with a trend toward more wound complications with ENPDS. Wound separation also tended to be more common in ENPDS group versus traditional dressing with an adjusted OR 2.66 (CI 0.87 to 8.12), although this result did not reach significance. Conclusion  ENPDS is equivalent to traditional dressing for preventing wound complications after controlling for the higher-risk population selected for its use. In particular, wound separation appears to occur more frequently in women treated with ENPDS versus traditional dressing and should be regarded as a potential hazard of the system.

Transverse occiput position: Using manual Rotation to aid Normal birth and improve delivery OUTcomes (TURN-OUT): A study protocol for a randomised controlled trial

BACKGROUND

Fetal occiput transverse position in the form of deep transverse arrest has long been associated with caesarean section and instrumental vaginal delivery. Occiput transverse position incidentally found in the second stage of labour is also associated with operative delivery in high risk cohorts. There is evidence from cohort studies that prophylactic manual rotation reduces the caesarean section rate. This is a protocol for a double blind, multicentre, randomised, controlled clinical trial to define whether this intervention decreases the operative delivery (caesarean section, forceps or vacuum delivery) rate.

METHODS/DESIGN

Eligible participants will be ≥37 weeks pregnant, with a singleton pregnancy, and a cephalic presentation in the occiput transverse position on transabdominal ultrasound early in the second stage of labour. Based on a background risk of operative delivery of 49%, for a reduction to 35%, an alpha value of 0.05 and a beta value of 0.2, 416 participants will need to be enrolled. Participants will be randomised to either prophylactic manual rotation or a sham procedure. The primary outcome will be operative delivery. Secondary outcomes will be caesarean section, significant maternal mortality and morbidity, and significant perinatal mortality and morbidity. Analysis will be on an intention-to-treat basis. Primary and secondary outcomes will be compared using a chi-squared test. A logistic regression for the primary outcome will be undertaken to account for potential confounders. This study has been approved by the Ethics Review Committee (RPAH Zone) of the Sydney Local Health District, Sydney, Australia, (protocol number: X110410).

DISCUSSION

This trial addresses an important clinical question concerning a commonly used procedure which has the potential to reduce operative delivery and its associated complications. Some issues discussed in the protocol include methods of assessing risk of bias due to inadequate masking of a procedural interventions, variations in intervention efficacy due to operator experience and the recruitment difficulties associated with intrapartum studies.

TRIAL REGISTRATION

This trial was registered with the Australian New Zealand Clinical Trials Registry (identifier: ACTRN12613000005752 ) on 4 January 2013.

A journey to zero: reduction of post-operative cesarean surgical site infections over a five-year period

BACKGROUND

Surgical site infections (SSI) are a substantial concern for cesarean deliveries in which a surgical site complication is most unwelcome for a mother with a new infant. Steps taken pre- and post-operatively to reduce the number of complications may be of substantial benefit clinically, economically, and psychologically.

METHODS

A risk-based approach to incision management was developed and implemented for all cesarean deliveries at our institution. A number of incremental interventions for low-risk and high-risk patients including pre-operative skin preparations, standardized pre- and post-operative protocols, post-operative nanocrystalline silver anti-microbial barrier dressings, and incisional negative pressure wound therapy (NPWT) were implemented sequentially over a 5-y period. A systematic clinical chart review of 4,942 patients spanning all cesarean deliveries between 2007-2012 was performed to determine what effects the interventions had on the rate of SSI for cesarean deliveries.

RESULTS

The percentage of SSI was reduced from 2.13% (2007) to 0.10% (2012) (p<0.0001). There were no substantial changes in the patient population risk factors over this time. As a result of the changes in incision management practice, a total of 92 cesarean post-operative SSIs were avoided: A total cost saving of nearly $5,000,000.

CONCLUSION

Applying a clinical algorithm for assessing the risk of surgical site complication and making recommendations on pre-operative and post-operative incision management can result in a substantial and sustainable reduction in cesarean SSI.

Persistent Occiput Posterior position - OUTcomes following manual rotation (POP-OUT): study protocol for a randomised controlled trial

BACKGROUND

Occiput posterior position is the most common malpresentation in labour, contributes to about 18% of emergency caesarean sections and is associated with a high risk of assisted delivery. Caesarean section is now a major contributing factor to maternal mortality and morbidity following childbirth in developed countries. Obstetric intervention by forceps and ventouse delivery is associated with complications to the maternal genital tract and to the neonate, respectively. There is level 2 evidence that prophylactic manual rotation reduces the caesarean section rate and assisted vaginal delivery. But there has been no adequately powered randomised controlled trial. This is a protocol for a double-blinded, multicentre, randomised controlled clinical trial to define whether this intervention decreases the operative delivery (caesarean section, forceps or vacuum delivery) rate.

METHODS/DESIGN

Eligible participants will be (greater than or equal to) 37 weeks' with a singleton pregnancy and a cephalic presentation in the occiput posterior position on transabdominal ultrasound early in the second stage of labour. Based on a background risk of operative delivery of 68%, then for a reduction to 50%, an alpha value of 0.05 and a beta value of 0.2, 254 participants will need to be enrolled. This study has been approved by the Ethics Review Committee (RPAH Zone) of the Sydney Local Health District, Sydney, Australia, and protocol number X110410. Participants with written consent will be randomised to either prophylactic manual rotation or a sham procedure. The primary outcome will be operative delivery (defined as vacuum, forceps and/or caesarean section deliveries). Secondary outcomes will be caesarean section, significant maternal mortality/morbidity and significant perinatal mortality/morbidity. Analysis will be by intention-to-treat. Primary and secondary outcomes will be compared using a chi-squared test. A logistic regression for the primary outcome will be undertaken to account for potential confounders. The results of the trial will be presented at one or more medical conferences. The trial will be submitted to peer review journals for consideration for publication. There will be potential to incorporate the results into professional guidelines for obstetricians and midwives.

TRIAL REGISTRATION

The Australian New Zealand Clinical Trials Registry ACTRN12612001312831 . Trial registered 12 December 2012.

Downward Trends in Surgical Site and Urinary Tract Infections After Cesarean Delivery in a French Surveillance Network, 1997–2003

Objective.

To evaluate whether the adjusted rates of surgical site infection (SSI) and urinary tract infection (UTI) after cesarean delivery decrease in maternity units that perform active healthcare-associated infection surveillance.

Design.

Trend analysis by means of multiple logistic regression.

Setting.

A total of 80 maternity units participating in the Mater Sud-Est surveillance network.

Patients.

A total of 37,074 cesarean deliveries were included in the surveillance from January 1, 1997, through December 31, 2003.

Methods.

We used a logistic regression model to estimate risk-adjusted post–cesarean delivery infection odds ratios. The variables included were the maternity units' annual rate of operative procedures, the level of dispensed neonatal care, the year of delivery, maternal risk factors, and the characteristics of cesarean delivery. The trend of risk-adjusted odds ratios for SSI and UTI during the study period was studied by linear regression.

Results.

The crude rates of SSI and UTI after cesarean delivery were 1.5% (571 of 37,074 patients) and 1.8% (685 of 37,074 patients), respectively. During the study period, the decrease in SSI and UTI adjusted odds ratios was statistically significant (R = −0.823 [P = .023] and R = −0.906 [P = .005], respectively).

Conclusion.

Reductions of 48% in the SSI rate and 52% in the UTI rate were observed in the maternity units. These unbiased trends could be related to progress in preventive practices as a result of the increased dissemination of national standards and a collaborative surveillance with benchmarking of rates.

Prophylactic ampicillin versus cefazolin for the prevention of post-cesarean infectious morbidity in Rwanda

OBJECTIVE

To evaluate the efficacy of ampicillin versus cefazolin as prophylactic antibiotics prior to cesarean delivery in Rwanda.

METHODS

In a prospective, randomized, open-label, single-site study conducted between March and May 2012, the effects of prophylactic ampicillin versus cefazolin were compared among women undergoing cesarean delivery at the Centre Hospitalier Universitaire de Kigali, Rwanda. Postoperatively, participants were evaluated daily for infectious morbidity while in the hospital. Follow-up was done by phone and by appointment at the hospital within 2 weeks of delivery.

RESULTS

During the study period, there were 578 total deliveries and 234 cesarean deliveries (40.4%). Overall, 132 women were enrolled in the study and randomized to receive either ampicillin (n=66) or cefazolin (n=66). No women were lost to follow-up. The overall infection rate was 15.9% (21/132). The infection rate in the ampicillin group and the cefazolin group was 25.8% (17/66) and 6.1% (4/66), respectively.

CONCLUSION

Implementing a universal protocol in Rwanda of prophylactic cefazolin prior to cesarean delivery might reduce postoperative febrile morbidity, use of postoperative antibiotics, and number of postoperative days in hospital.

Insulin and hypertonic glucose in the management of aseptic fat liquefaction of post-surgical incision: a meta-analysis and systematic review

A meta-analysis and systematic review assessing randomised controlled trials (RCTs) was sought to determine whether subcutaneous injection of insulin with hypertonic glucose promotes healing in postoperative incisions with aseptic fat liquefaction. We searched the Cochrane library, Pubmed, EMBASE, National Science Digital Library (NSDL) and China Biological Medicine Database (CBMdisc) for literature published from 1 January 1990 to 30 September 2011. RCTs that evaluated subcutaneous injection of insulin with hypertonic glucose as a treatment for postoperative wound with fat liquefaction were sought. Wound healing was the primary endpoint. Jadad score and Cochrane Collaboration's tool were used for assessing quality of studies and risk of bias. We abstracted data regarding time to wound healing, cost and adverse effects. The random-effects inverse variance model was used for all analyses using weighted mean difference and 95% confidence interval. Eight trials (414 participants) were identified that met the inclusion criteria. Subcutaneous injection of insulin with hypertonic glucose significantly reduces time to healing by 6·33 days compared with conventional drainage, with less cost. There was no report concerning adverse effects. Subcutaneous injection of insulin with hypertonic glucose may improve the healing process in postoperative wounds with aseptic fat liquefaction.

Obesity and pregnancy: clinical management of the obese gravida

In recent years, the prevalence of obesity in the United States has risen dramatically, especially among women of reproductive age. Research that has specifically evaluated pregnancy outcomes among obese parturients has allowed for a better understanding of the myriad adverse perinatal complications that are observed with significantly greater frequency in the obese pregnant population. The antepartum, intrapartum, intraoperative, postoperative, and postpartum periods are all times in which the obese pregnant woman is at greater risk for adverse maternal-fetal outcomes, compared with her ideal bodyweight counterpart. Comorbid medical conditions that commonly are associated with obesity further accentuate perinatal risks. All obese pregnant women should be counseled regarding these risks, and strategies should be used to improve perinatal outcome whenever possible. Obese women of reproductive age ideally should be counseled before conception and advised to achieve ideal bodyweight before pregnancy.

Re-laparotomy after cesarean section

OBJECTIVE

To assess the rate, indications, and outcome of re-laparotomy after cesarean section in the early postoperative period.

DESIGN

A retrospective observational study during a 121-month period.

SETTING

A tertiary care university center.

POPULATION

A cohort of 3380 women who underwent cesarean section out of 18,609 parturients.

MAIN OUTCOME MEASURES

Incidence of re-laparotomy after cesarean section in the early postoperative period.

RESULTS

The incidence of re-laparotomy after cesarean section was 0.53% (18/3380). Of these 18 women, 12 (66%) were operated for hemorrhage, 3 (17%) for eventration, and 3 (17%) for formation of intra-abdominal abscess. Hysterectomy was required in one case (5.5%). We had no maternal mortalities.

CONCLUSION

Although the incidence of re-laparotomy after cesarean in the early postoperative period is low and the outcome is favorable, several measures must be undertaken to reduce the need for re-laparotomy.

Vacuum-assisted closure: state of clinic art

Treatment of wounds has been the cornerstone of plastic surgery since its inception. Vacuum-assisted closure provides a new paradigm that can be used in concert with a wide variety of standard existing plastic surgery techniques. It was originally developed as an alternative treatment for debilitated patients with chronic wounds. It has rapidly evolved into a widely accepted treatment of chronic and acute wounds, contaminated wounds, burns, envenomations, infiltrations, and wound complications from failed operations. The ease of technique and a high rate of success have encouraged its adaptation by thoracic, general, trauma, burn, orthopedic, urologic, as well as plastic surgeons. This article discusses multidisciplinary advances in the use of the vacuum-assisted closure technique over the past 10 years and its status as of 2006. Creative surgeons continue to regularly adapt the system to difficult problems. This technique in trained surgical hands greatly enhances the scope and safety of wound treatment.