Perioperative complications in obese women vs normal-weight women who undergo vaginal surgery

Obesity and Reconstructive Pelvic Surgery: An ACS NSQIP Study

IMPORTANCE

Obesity is steadily increasing in the United States and is a risk factor for many medical and surgical complications. Literature is limited regarding obesity as an independent risk factor for perioperative complications after reconstructive pelvic surgery (RPS).

OBJECTIVE

This study aimed to analyze the association of obesity on 30-day perioperative complications after RPS.

STUDY DESIGN

This was a database study comparing perioperative complications after RPS of obese versus nonobese patients using the American College of Surgeons National Surgical Quality Improvement Program. Patients who underwent surgery for uterovaginal or vaginal vault prolapse were selected, and perioperative outcomes were compared between obese and nonobese patients. Obesity was defined as a body mass index ≥30 (calculated as weight in kilograms divided by height in meters squared).

RESULTS

A total of 13,302 patients met the inclusion criteria and were included in this study; 4,815 patients were obese, whereas 8,487 were nonobese. The overall rate of any 30-day postoperative complication was 6.8%, and the rate of complications did not differ between groups. Superficial and organ space surgical site infections were significantly higher in the obese cohort, whereas nonobese patients were more likely to receive a blood transfusion. A multivariable logistic regression model was performed with variables that were statistically significant on bivariate analysis and deemed clinically significant. Variables included obesity, age, American Society of Anesthesiologists class, current smoker, diabetes, hypertension, operative time, colpopexy, and obliterative procedure. After controlling for potential confounding factors, obesity was not associated with any 30-day postoperative complications after pelvic organ prolapse surgery.

CONCLUSION

Obesity was not associated with 30-day postoperative complications after RPS after controlling for possible confounding variables.

Impact of Severe Obesity on Major Perioperative Complications for Prolapse Surgery

IMPORTANCE

Obesity adds complexity to the decision of surgical approach for pelvic organ prolapse; data regarding perioperative complications are needed.

OBJECTIVE

The aim of the study was to evaluate associations of body mass index (BMI) and surgical approach (vaginal vs laparoscopic) on perioperative complications.

STUDY DESIGN

Patients who underwent prolapse surgery were identified via the Current Procedural Terminology codes from the American College of Surgeons National Surgical Quality Improvement Program database 2007-2018. Thirty-day major complications were compared across BMI to identify an inflection point, to create a dichotomous BMI variable. Multivariable logistic regression was used to assess the association between BMI and complications. An interaction term was introduced to evaluate for effect modification by operative approach.

RESULTS

A total of 26,940 patients were identified (25,933 BMI < 40, 1,007 BMI ≥ 40). The proportion of patients experiencing a major complication was higher in the BMI ≥ 40 group (2.0 vs 1.1%, P = 0.007). In multivariate analysis, the odds of a major complication was 1.8 times higher for women with a BMI ≥ 40 (95% confidence interval, 1.1-2.9, P = 0.04). There was a significant interaction between operative approach and BMI; therefore, further analyses were restricted to either vaginal or laparoscopic operative approaches. Among women who underwent vaginal prolapse repair, there was no difference in the odds of a major complication (adjusted odds ratio, 1.4; 0.8-2.4; P = 0.06). Among women who underwent laparoscopic repair, those with a BMI ≥ 40 were 6 times more likely to have a major complication (adjusted odds ratio, 6.0; 2.5-14.6; P < 0.001).

CONCLUSIONS

Body mass index ≥ 40 was associated with an increased odds of a 30-day major complication. This association was greatest in women who underwent a laparoscopic prolapse repair.

Long-Term Assessment of Pelvic Organ Prolapse Reoperation Risk in Obese Women: Vaginal and Laparoscopic Approaches

The aim of this study was to compare reoperation risks after pelvic organ prolapse repair at 5-year follow-up between obese, overweight, and normal-weight women and to assess these risks accounting for the surgical procedure. We performed a retrospective chart review of all the women who underwent POP repair by transvaginal mesh surgery between January 2005 and January 2009 or laparoscopic sacrocolpopexy between January 2003 and December 2013 at the Gynecologic Surgery Department of the Lille University Hospital. During the study period, 744 women who underwent POP repair were divided into three groups: 382 (51%), 240 (32%), and 122 (16%) in the nonobese group (BMI < 25 kg/m²), overweight group (25 kg/m² ≤ BMI < 30 kg/m²), and obese group (BMI ≥ 30 kg/m²), respectively. The primary outcome was global reoperation. The median duration of follow-up was 87 months. The risks of global reoperation did not significantly differ between the three BMI groups (adjusted HR (95% CI): 1.12 (0.69 to 1.82) for overweight women and 0.90 (0.46 to 1.74) for obese women compared to normal-weight women, adjusted p = 0.80), nor among the women who underwent transvaginal mesh surgery or laparoscopic sacrocolpopexy. The risks of reoperation for POP recurrence, stress urinary incontinence, or mesh-related complications did not significantly differ between the three BMI groups in the overall population nor accounting for the surgical procedure. In conclusion, obesity does not seem to be a risk factor of reoperation for POP recurrence, SUI, or mesh-related complications in the long term regardless of the surgical approach.

Assessing the impact of obesity on surgical quality outcomes among patients undergoing hysterectomy for benign, non-urgent indications

OBJECTIVE

To evaluate the impact of body mass index (BMI) on surgical quality metrics for patients undergoing benign, non-urgent hysterectomy.

STUDY DESIGN

A multicentre, retrospective review at 7 hospitals in Ontario, Canada (4 academic, 3 community) was conducted. Patients undergoing hysterectomy from July 2016 to June 2019 were included. Hysterectomies for premalignant, malignant and emergency indications were excluded. The primary outcome was a composite of any complication or readmission. Secondary outcomes were grade 2 or greater complication, postoperative emergency department (ED) visit, hospital readmission, operative time (ORT) and estimated blood loss (EBL). Patient characteristics (age, ASA class, preoperative diagnoses, preoperative anemia, prior surgeries), surgical factors (endometriosis, adhesions, hysterectomy route, uterine weight, concomitant procedures, ORT, EBL) and surgeon characteristics (volume, fellowship/generalist training, academic/community hospital) were recorded along with complications, hospital readmissions and ED visits. Outcomes were evaluated using logistic regression and log-regression linear analysis grouping patients by BMI category (normal, overweight, obesity class 1, 2, and 3) and by hysterectomy route (abdominal, laparoscopic, and vaginal).

RESULTS

2528 hysterectomies were performed by 67 surgeons. 828 (33%) patients had a normal BMI, 889 (35%) were overweight. 500 (20%) patients had a BMI corresponding to obesity class 1, 205 (8%) class 2 and 106 (4%) class 3. Obese patients had higher ASA class (p <.001) and more prior surgeries (p <.001) compared to patients with normal BMI. Those with class 2 and 3 obesity were younger (p <.001), had greater uterine weight (p <.001) and more intra-operative adhesions (p <.001). After controlling for covariates, there were no differences in the odds of the primary or secondary outcomes, with the exception of patients with class 2 obesity who underwent vaginal hysterectomy. They had 9.1% (11 min) significantly longer ORT (0.091, 95% CI 0.002-0.18, p <.05) and patients with an overweight BMI who underwent vaginal hysterectomy had 28 ml significantly less EBL (-0.154, 95% CI -0.26 to -0.05, p <.01) compared to patients with normal BMI.

CONCLUSION

BMI was not independently associated with surgical quality outcomes in patients undergoing hysterectomy for benign, non-urgent indications. Abdominal, laparoscopic, and vaginal hysterectomy can be performed safely in overweight and obese patients.

Risk Factors for Bladder Perforation at the Time of Retropubic Midurethral Sling Placement

IMPORTANCE

There is conflicting evidence regarding predictive factors for bladder perforation during retropubic midurethral sling (R-MUS) placement and lack of evidence to support adoption of techniques to minimize such injury.

OBJECTIVES

The aims of the study were to describe the incidence of and factors associated with bladder perforation during R-MUS placement and to explore whether retropubic hydrodissection decreases the likelihood of perforation.

STUDY DESIGN

This is a case-control study of women undergoing R-MUS placement from 2007 to 2017. Cases were identified by review of the operative reports for evidence of bladder perforation. Patients without bladder perforation were defined as controls and were matched to cases in a 3:1 ratio by surgeon, sling type, and surgery date.

RESULTS

A total of 1,187 patients underwent R-MUS placement. The incidence of bladder perforation was 8% (n = 92 patients); 276 controls were matched accordingly (N = 368). Patients with bladder perforations were more likely to have a body mass index (BMI) less than 30 (P = 0.004) and to have a diagnosis of endometriosis (P = 0.02). They were also more likely to have had previous hysterectomy (P = 0.03) and urethral bulking (P = 0.01). On logistic regression, bladder perforation remained associated with a BMI less than 30 (adjusted odds ratio, 2.22 [95% confidence interval, 1.30-3.80]) and endometriosis (adjusted odds ratio 2.90 [95% confidence interval, 1.15-7.01]). Retropubic hydrodissection was performed in 62% of the patients and was not associated with a lower risk of perforation (P = 0.86).

CONCLUSIONS

The incidence of bladder perforation was 8%. The risk of this complication is higher in patients with a BMI less than 30 and/or endometriosis. Retropubic hydrodissection may not decrease the likelihood of this event.

Complications After Vaginal Vault Suspension Versus Minimally Invasive Sacrocolpopexy in Women With Elevated Body Mass Index: A Retrospective Cohort Study Using Data From the National Surgical Quality Improvement Program Database

IMPORTANCE

Overweight and obese women represent a growing share of pelvic floor reconstruction surgeons' practices. Determining perioperative risk specific to this population is essential to inform decision making regarding operative approach in this population.

OBJECTIVE

The aim of the study was to compare surgical complications among overweight and obese women undergoing apical compartment prolapse surgery by either minimally invasive abdominal or vaginal approach.

STUDY DESIGN

The American College of Surgeons National Surgical Quality Improvement Database was used to identify overweight and obese patients (body mass index ≥ 25) undergoing either minimally invasive sacrocolpopexy (MISC) or vaginal vault suspension (VVS) in the form of a sacrospinous vault fixation or uterosacral ligament fixation for pelvic organ prolapse from 2012 to 2019. Odds ratios for surgical complications, readmission, and reoperation were estimated using multivariable logistic regression.

RESULTS

Of 8,990 eligible patients, 5,851 underwent a VVS and 3,139 patients underwent MISC. There was a greater odds of any complication in the first 30 days following VVS (n = 608 [10.4%]) compared with MISC (n = 247 [7.9%]; odds ratio, 1.27; 95% confidence interval, 1.08-1.48) on multivariable analysis. Urinary tract infections (UTIs) were the most common complication and were more likely following VVS (112 (3.6%) versus 350 (6.0%), P < 0.001). When UTIs were excluded, there was no difference in complications between approaches (1.00; 95% CI, 0.82-1.22). There were no statistically significant odds of readmission, reoperation, or serious complications between approaches.

CONCLUSIONS

Vaginal vault suspension may be associated with a higher odds of any complication compared with MISC in overweight and obese women, but the rate of serious complications, readmission, and reoperation are low, and approaches were comparable when considering complications other than UTI.

Predictors of postoperative complications from stress urinary incontinence procedures: a NSQIP database study

INTRODUCTION AND HYPOTHESIS

There are few studies examining patient risk factors for postoperative complications following midurethral sling (MUS) placement for stress urinary incontinence (SUI). The objective of this study was to describe 30-day postoperative complications after MUS using the National Surgical Quality Improvement Program database. Secondary objectives included rates of readmission and patient factors associated with postoperative complications and readmissions following MUS.

METHODS

We identified 16,491 women who underwent MUS for SUI between 2014 and 2018. American Society of Anesthesia (ASA) classification, medical comorbidities, readmission, reoperation, and 30-day postoperative complications were extracted. Outcomes included the 30-day postoperative complications, readmission, and reoperations. Descriptive statistics, univariate analyses, and multivariate logistic regression were used.

RESULTS

The majority of patients were white (66.9%) and had an ASA classification II (60.9%). Postoperative complications occurred in 4.2% of patients; 1.5% required readmission and 1.0% required reoperation. The most common complication was urinary tract infection (3.4%). Using multivariate logistic regression, older age, i.e., ≥80 years of age, was associated with increased odds of complication (aOR 1.77, 95%CI 1.14-2.72) and readmission (aOR 3.84, 95%CI 1.76-8.66). ASA class III and IV were associated with increased odds of complications (aOR 1.55, 95%CI 1.13-2.14, and aOR 3.06, 95% CI 1.48-5.86 respectively) and readmissions. Women of Asian, American Indian or Alaska Native, and Native Hawaiian or Pacific Islander descent ("other") were associated with increased postoperative complications (aOR 1.51, 95%CI 1.07-2.07).

CONCLUSION

Postoperative complications following MUS are rare. Factors associated with complications following MUS for SUI include age, ASA class, and women of "other" race.

Glycemic, maternal and neonatal outcomes in women with type 1 diabetes using continuous glucose monitoring during pregnancy - Pump vs multiple daily injections, a secondary analysis of an observational cohort study

INTRODUCTION

Continuous glucose monitoring (CGM) provides detailed information about glucose level fluctuations over time. The method is increasingly being used in pregnant women with type 1 diabetes. However, only one previous study compared CGM results related to pregnancy outcomes in women using insulin pumps with those administering multiple daily injections (MDI). We performed a secondary analysis of CGM metrics from an observational cohort of pregnant women with type 1 diabetes and compared insulin pump and MDI therapies in relation to maternal and neonatal outcomes.

MATERIAL AND METHODS

The study included 185 pregnant Swedish women with type 1 diabetes undergoing CGM throughout pregnancy. Women were divided according to insulin administration mode, ie MDI (n = 131) or pump (n = 54). A total of 91 women used real-time CGM and 94 women used intermittently viewed CGM. Maternal demographics and maternal and neonatal outcome data were collected from medical records. CGM data were analyzed according to predefined glycemic indices: mean glucose; standard deviation; percentage of time within, below and above glucose target range; mean amplitude of glycemic excursion; high and low glucose indices; and coefficient variation in percent. Associations between insulin administration mode and CGM data, on the one hand, and maternal and neonatal outcomes, on the other, were analyzed with analysis of covariance and logistic regression, respectively, adjusted for confounders.

RESULTS

There were no differences in maternal characteristics or glycemic indices between the MDI and pump groups, except for a longer duration of type 1 diabetes and higher frequencies of microangiopathy and real-time CGM among pump users. Despite improvement with each trimester, glucose levels remained suboptimal throughout pregnancy in both groups. There were no differences between the MDI and pump groups concerning the respective associations with any of the outcomes. The frequency of large for gestational age was high in both groups (MDI 49% vs pump 63%) and did not differ significantly.

CONCLUSIONS

Pregnant women with type 1 diabetes did not differ in glycemic control or pregnancy outcome, related to MDI or pump administration of insulin. Glycemic control remained suboptimal throughout pregnancy, regardless of insulin administration mode.

What urologists need to know about male to female genital confirmation surgery (vaginoplasty): techniques, complications and how to deal with them

Vaginoplasty is the most commonly performed genital surgery for gender affirmation. Male-to-female (MTF) patients are roughly four times more likely to undergo genital surgery than female-to-male (FTM) patients. Penile inversion vaginoplasty is the most common technique used today, although there are also lesser used alternative methods including visceral interposition and pelvic peritoneal vaginoplasty. In general, outcomes are excellent, and many of the complications are self-limited. Most surgeons performing genital surgery for gender dysphoria adhere to the World Professional Association for Transgender Health (WPATH) guidelines for determining who is a candidate for surgery. Currently, there are no absolute contraindications to vaginoplasty in a patient who is of the age of majority in their country, only relative contraindications which include active smoking and morbid obesity. Important complications include flap necrosis, rectal and urethral injuries, rectal fistula, vaginal stenosis, and urethral fistula. When performed correctly in excellent surgical candidates by skilled surgeons, vaginoplasty can be a rewarding surgical endeavor for the patient and surgeon.

Incidence and contributing factors of perioperative complications in surgical procedures for pelvic organ prolapse

BACKGROUND

Data on the incidence of perioperative complications of surgical procedures for pelvic organ prolapse (POP) and their contributing factors are limited, sometimes conflicting, and often mixed with other urogynecologic surgeries.

OBJECTIVES

To estimate the incidence and contributing factors for perioperative complications of POP procedures.

METHODS

A cross-sectional study was carried out between November 2016 and June 2017. POP procedures of different approaches were included irrespective of the surgeon involved, type of surgery (primary or repeat), or concomitant hysterectomy or incontinence repair. Data on perioperative complications were recorded prospectively.

RESULTS

A total of 366 women were included in the current analysis. The average age was 61.0 ± 13.4 years. The surgical procedures performed were vaginal (75.3%), abdominal (11.3%), or combined (13.4%). Approximately 18.2% of these procedures were repeat surgeries. A total of 38 (11.3%) women developed perioperative complications (3.6% severe and 7.7% minor). These included: 25 (7.4%) intraoperative complications (2.4% severe and 5.1% minor) and 17 (5.1%) postoperative complications (2.1% severe and 3.0% minor). In multivariate analysis, abdominal surgery and McCall culdoplasty were significant predictors of intraoperative complications (alone or when combined with other postoperative complications). On the other hand, concomitant hysterectomy and concomitant incontinence repair procedure were associated with higher postoperative complication rates while vaginal surgery had fewer postoperative complications.

CONCLUSION

There was a low rate of perioperative complications. Abdominal surgery and McCall culdoplasty showed higher intraoperative complications. These data should help in preoperative counseling and target ways to further decrease complication rates.

Impact of body mass index on utilization of selected hospital resources for four common surgical procedures

BACKGROUND

Evidence about the impact of obesity on surgical resource consumption in the Australian setting is equivocal. Our objectives were to quantify the prevalence of obesity in four frequently performed surgical procedures and explore the association between body mass index (BMI) and hospital resource utilization including procedural duration, length of stay (LOS) and costs.

METHODS

A retrospective cohort study of patients undergoing four surgical procedures at a tertiary referral centre in New South Wales, between 1 January 2016 and 31 December 2016, was conducted. The four surgical procedures were total hip replacement, laparoscopic appendectomy, laparoscopic cholecystectomy and hysteroscopy with dilatation and curettage. Surgical groups were stratified according to BMI category.

RESULTS

A total of 699 patients were included in the study. The prevalence of obesity was significantly higher than local and national population estimates for all procedures except appendectomy. BMI was not associated with increased hospital resource utilization (procedural, anaesthetic or intensive care stay duration) in any of the four surgical procedures examined after controlling for age, gender and complexity. For other outcomes of hospital resource utilization (LOS and cost), the relationship was inconsistent across the four procedures examined. A high BMI was positively associated with higher LOS, medical costs and allied health costs in those who underwent an appendectomy, and critical care costs in those who underwent laparoscopic cholecystectomy.

CONCLUSION

Obesity was common in patients undergoing four frequently performed surgical procedures. The relationship between BMI and hospital resource utilization appears to be complex and varies across the four procedures examined.

Perioperative Adverse Events in Women Undergoing Concurrent Hemorrhoidectomy at the Time of Urogynecologic Surgery

OBJECTIVE

The aim of this study was to describe the incidence and trends of outcomes after concurrent surgeries for symptomatic hemorrhoids and pelvic floor disorders.

METHODS

This was a retrospective matched cohort study. Women who underwent concurrent vaginal urogynecologic and hemorrhoid surgery between 2007 and 2017 were identified by their surgical codes and matched to a cohort of women who underwent vaginal urogynecologic surgery only. The medical record was queried for demographic and perioperative data.

RESULTS

Thirty-three subjects met the inclusion criteria; 198 subjects were matched accordingly (N = 231). Mean age and body mass index were 57 ± 12 years and 28.9 ± 5.6 kg/m, respectively. Subjects who underwent concurrent hemorrhoidectomy were more likely to have had previous prolapse surgery (27.3% vs 15.2%, P = 0.09) and preoperative fecal incontinence (27.3% vs 13.6%, P = 0.05). Concurrent cases were more likely to have unplanned office visits (27.2% vs 12.6%, P = 0.03) and phone calls (range, 1-7 vs 0-10; P = 0.001), mostly for pain complaints. Reoperation was higher in combined cases (3% vs 0%, P = 0.01); however, the overall rate of serious perioperative adverse events was low and not different between groups. Concurrent cases were more likely to be discharged home with a Foley (42.4% vs 18.2%, P = 0.002) and to have a postoperative urinary tract infection (33.3% vs 10.6%, P = 0.005). In the concurrent group, 33.3% of the patients experienced severe rectal pain.

CONCLUSIONS

Patients undergoing concurrent hemorrhoidectomy at the time of vaginal urogynecologic surgery are at higher risk of minor events such as postoperative urinary tract infection and need for discharge home with a Foley, as well as risk of pain that may be greater than urogynecologic surgery alone.

Obesity and Perioperative Complications in Pelvic Reconstructive Surgery in 2013: Analysis of the National Inpatient Sample

OBJECTIVES

The primary aim of this study was to determine the impact of obesity on national rates of perioperative complications in women undergoing pelvic reconstructive surgery in 2013 in the United States.

METHODS

Women who underwent pelvic reconstructive surgery were identified in the 2013 National Inpatient Sample using International Classification of Diseases, Ninth Revision procedure codes. Demographic data and comorbidities including obesity (body mass index ≥30 kg/m) were abstracted. Perioperative complications and mortalities that occurred during the same admission were abstracted from the data set using International Classification of Diseases, Ninth Revision diagnosis codes. The complication rates were compared between obese and nonobese subjects. Univariate analysis was performed to determine factors associated with the primary outcome. Significant factors were included in the regression model to determine the adjusted odds ratio for perioperative complications in obese women.

RESULTS

A total of 16,639 women underwent pelvic reconstructive surgery in the 2013 National Inpatient Sample data set and were included in the analysis. Approximately 10% of the study cohort was obese. The overall perioperative complication rate during the surgical admission was 25%. On multivariate analysis, obesity was found to increase the odds of perioperative complications by approximately 40% after controlling for age, race, income, concomitant hysterectomy, and medical comorbidities (adjusted odds ratio, 1.40; 95% confidence interval, 1.24-1.58; P < 0.0001).

CONCLUSIONS

Obesity is an independent risk factor for perioperative complications in women who undergo pelvic reconstructive surgery. This information can be used for preoperative counseling and risk stratification.

Obesity and pelvic organ prolapse

PURPOSE OF REVIEW

The purpose of this review is to review the data on the relationship of obesity and pelvic organ prolapse (POP). This review is timely and relevant as the prevalence of obesity is increasing worldwide, and it is an important risk factor to consider in counseling women on management of prolapse symptoms and outcomes for surgical treatment.

RECENT FINDINGS

The main findings in the literature include: Obesity is increasing worldwide and impacts health, social life, work and healthcare costs. Elevated BMI is an important lifestyle factor affecting pelvic prolapse. The most probable mechanism of POP development among obese women is the increase in intra-abdominal pressure that causes weakening of pelvic floor muscles and fascia. Obesity is associated with significant pelvic floor symptoms and impairment of quality of life (QOL). Weight loss is likely not associated with anatomic improvement, but may be associated with prolapse symptom improvement. Weight loss should be considered a primary option in obese women for its beneficial effects on multiple organ systems and reducing pelvic floor disorder (PFD) symptoms. Although the operation time in obese women is significantly longer than in healthy weight women, the complication rate of surgery has not been shown to be increased compared to nonobese patients, regardless of route of surgery. There are data to support the vaginal approach in obese women. Some studies have shown that women with high body weight are associated with an increase in the risk for both anatomical and functional recurrence, and other studies have shown no difference.

SUMMARY

Obesity is a prevalent modifiable condition that impacts PFDs including pelvic prolapse. Patients should be counseled using clinical judgment, knowledge of the literature and with the goal of improving QOL.

Obesity and Stress Urinary Incontinence: Impact on Pathophysiology and Treatment

PURPOSE OF REVIEW

Obesity is highly prevalent and is associated with stress urinary incontinence (SUI). The purposes of this review are to assess the pathophysiology of SUI in the obese female and review the outcomes of weight loss and anti-incontinence surgery in this population.

RECENT FINDINGS

While increased intra-abdominal pressure appears to be the common pathophysiologic link between obesity and SUI, neurogenic and metabolic pathways have been proposed. Both surgical and non-surgical weight loss continue to have beneficial effects on SUI; however, long-term outcomes are largely absent. Midurethral sling (MUS) surgery is largely effective in the obese population, with a complication profile similar to that in non-obese women. Obesity has been shown to be a risk factor for failure of MUS. While weight loss should be the primary modality to improve SUI in the obese woman, MUS remains an effective and safe option in those women undertaking surgery.

Maternal obesity and major intraoperative complications during cesarean delivery

BACKGROUND

Multiple studies have demonstrated an association between maternal obesity and postoperative complications, but there is a dearth of information about the impact of obesity on intraoperative complications.

OBJECTIVE

To estimate the association between maternal obesity at delivery and major intraoperative complications during cesarean delivery (CD).

METHODS

This is a secondary analysis of the deidentified Maternal-Fetal Medicine Unit Cesarean Registry of women with singleton pregnancies. Maternal body mass index (BMI) at delivery was categorized as BMI 18.5 to 29.9 kg/m², BMI 30 to 39.9 kg/m², BMI 40 to 49.9 kg/m², and BMI ≥ 50 kg/m². The primary outcome, any intraoperative complication, was defined as having at least 1 major intraoperative complication, including perioperative blood transfusion, intraoperative injury (bowel, bladder, ureteral injury; broad ligament hematoma), atony requiring surgical intervention, repeat laparotomy, and hysterectomy. Log-binomial models were used to estimate risk ratios of intraoperative complication in 2 models: model 1 adjusting for maternal race, and preterm delivery <37 weeks; and model 2 adjusting for confounders in Model 1 as well as emergency CD, and type of skin incision.

RESULTS

A total of 51,218 women underwent CD; 38% had BMI 18.5 to 29.9 kg/m², 47% BMI 30 to 39.9 kg/m², 12% BMI 40 to 49.9 kg/m² and 3% BMI ≥ 50 kg/m². Having at least 1 intraoperative complication was uncommon (3.4%): 3.8% for BMI 18.5 to 29.9 kg/m², 3.2% BMI 30 to 39.9 kg/m², 2.6% BMI 40 to 49.9 kg/m² and 4.3% BMI ≥ 50 kg/m² (P < .001). In the fully adjusted model 2, women with BMI 40 to 49.9 kg/m² had a lower risk of any intraoperative complication (adjusted risk ratio [ARR], 0.76; 95% confidence interval [CI], 0.64 to 0.89) compared with women with BMI 18.5 to 29.9 kg/m². Women with BMI 30 to 39.9 kg/m² (ARR, 0.93; 95% CI, 0.84 to 1.03) had a similar risk of any intraoperative complication compared with nonobese women. Among super obese women, there was evidence of effect modification by emergency CD. Compared with nonobese women, neither super obese women undergoing nonemergency CD (ARR, 1.13; 95% CI, 0.84 to 1.52) nor those undergoing emergency CD (ARR, 0.59; 95% CI, 0.32 to 1.10) had an increased risk of intraoperative complication.

CONCLUSION

In contrast to the risk for postcesarean complications, the risk of intraoperative complication does not appear to be increased in obese women, even among those with super obesity.

Effectiveness of Transobturator Tape Procedure in Obese and Severely Obese Women: 3-Year Follow-up

OBJECTIVE

To assess the efficacy and safety of transobturator tape (TOT) for the treatment of stress urinary incontinence in severely obese and obese women.

METHODS

We retrospectively reviewed the women who underwent a TOT procedure at 2 institutions between March 2005 and March 2013. The patients were divided into 3 groups according to the World Health Organization body mass index (BMI) values: normal weight group (BMI <25 kg/m(2); group 1), obese group (BMI = 30-34 kg/m(2); group 2), and severely obese group (BMI ≥35 kg/m(2); group 3). Overweight women (BMI = 25-29 kg/m(2)) were omitted. Patients filled in the International Consultation on Incontinence Questionnaire-Short Form (ICIQ-SF) preoperatively and at the postoperative follow-up visits. The severity of urinary incontinence was classified by ICIQ-SF: slight (1-5), moderate (6-12), severe (13-18), and very severe (19-21). Patient satisfaction was assessed using a visual analog scale. Subjective improvement was defined as an ICIQ-SF score ≤12 and satisfaction with surgery (visual analog scale score ≥80).

RESULTS

A total 470 women met the requirements for inclusion. There were 153 women in group 1, 72 women in group 2, and 32 women in group 3. Mean follow-up period was at least 12 months in all the groups. The difference between the groups according to mean operative time was significant (P <.001). The objective cure, subjective success (cured and improved), patient satisfaction rates, and complications were similar between the groups.

CONCLUSION

Obesity and severe obesity do not seem to be risk factors for the failure of TOT procedure. However, postoperative urgency urinary incontinence rate was higher in severely obese women, and more women showed improvement instead of cure among severely obese women.

Antimicrobial therapy in obesity: a multicentre cross-sectional study

Objectives

Evidence indicates a relationship between obesity and infection. We assessed the prevalence of obesity in hospitalized patients and evaluated its impact on antimicrobial management.

Methods

Three National Health Service hospitals in London in 2011–12 were included in a cross-sectional study. Data from all adult admissions units and medical and surgical wards were collected. Patient data were collected from the medication charts and nursing and medical notes. Antimicrobial therapy was defined as ‘complicated’ if the patient's therapy met two or more of the following criteria: (i) second- or third-line therapy according to local policy; (ii) intravenous therapy where an alternative oral therapy was appropriate; (iii) longer than the recommended duration of therapy as per local policy recommendations; (iv) repeated courses of therapy to treat the same infection; and (v) specialist advice on antimicrobial therapy provided by the medical microbiology or infectious diseases teams.

Results

Of the 1014 patients included in this study, 22% (225) were obese, 69% (696) were normal/overweight and 9% (93) were underweight. Obese patients were significantly more likely to have more complicated antimicrobial therapy than normal/overweight and underweight patients (36% versus 19% and 23%, respectively, P = 0.002). After adjustment for hospital, age group, comorbidities and the type of infection, obese patients remained at significantly increased odds of receiving complicated antimicrobial therapy compared with normal/overweight patients (OR = 2.01, 95% CI 1.75–3.45).

Conclusions

One in five hospitalized patients is obese. Compared with the underweight and normal/overweight, the antimicrobial management in the obese is significantly more complicated.

Comparison of functional outcomes with purely laparoscopic sacrocolpopexy and robot-assisted sacrocolpopexy in obese women

OBJECTIVE

To compare the functional outcomes and complication rates following laparoscopic sacrocolpopexy (LS) with those occurring in robot-assisted laparoscopic sacrocolpopexy (RALSCP) in obese women.

PATIENTS AND METHODS

A comparative retrospective multicentre study was made, involving 39 obese women (BMI≥30 kg/m2) who underwent LS, and 17 obese women who underwent RASCLP. The operative parameters (length of operation, associated procedures, complication rate and length of hospitalization) and the objective and subjective results were evaluated at 12 months follow-up.

RESULTS

The median (IQR) BMI was 30.5 kg/m2 (30-32) in the LS group vs 31.6 kg/m2 (30-34) in the RALSCP group (P=0.402). The anatomical results were comparable in both groups (LS vs RALSCP): post-operative stage of prolapse (POP-Q-ICS): stage 0-1: 34/39 (88%) vs 16/17 (94.1%), P=0.7; stage 2: 4/39 (10%) vs 0/17 (0%), P=0.7; stage 3-4: 1/39 (2%) vs 1/17 (5.9%), P=0.7. The complication rate was similar in both groups (LS vs RALSCP): bladder injury 2.5% (1/39) vs 0% (0/17), P=0.6, laparoconversion 5.1% (2/39) vs 5.9% (1/17), P=0.5. The overall reoperation rate was (LS vs RALSCP): 18% (7/39) vs 5.9% (1/17), P=0.4.

CONCLUSION

Laparoscopic sacrocolpopexy and robot-assisted laparoscopic sacrocolpopexy have equal results in obese women. The complication rates and outcomes appear to be similar in both groups of obese women.

LEVEL OF EVIDENCE

3.

Indications, contraindications, and complications of mesh in surgical treatment of pelvic organ prolapse

Women are seeking care for pelvic organ prolapse in increasing numbers and a significant proportion of them will undergo a second repair for recurrence. This has initiated interest by both surgeons and industry to utilize and design prosthetic mesh materials to help augment longevity of prolapse repairs. Unfortunately, the introduction of transvaginal synthetic mesh kits for use in women was done without the benefit of level 1 data to determine its utility compared with native tissue repair. This report summarizes the potential benefit/risks of transvaginal synthetic mesh use for pelvic organ prolapse and recommendations regarding its continued use.

Surgical site infection after hysterectomy

OBJECTIVE

Our objective was to estimate the occurrence of surgical site infections (SSI) after hysterectomy and the associated risk factors.

STUDY DESIGN

We conducted a cross-sectional analysis of the 2005-2009 American College of Surgeons National Surgical Quality Improvement Program participant use data files to analyze hysterectomies. Different routes of hysterectomy were compared. The primary outcome was to identify the occurrence of 30-day superficial SSI (cellulitis) after hysterectomy. Secondary outcomes were the occurrence of deep and organ-space SSI after hysterectomy. Logistic regression models were conducted to further explore the associations of risks factors with SSI after hysterectomy.

RESULTS

A total of 13,822 women were included in our final analysis. The occurrence of postoperative cellulitis after hysterectomy was 1.6% (n = 221 women). Risk factors that were associated with cellulitis were route of hysterectomy with an adjusted odds ratio (AOR) of 3.74 (95% confidence interval [CI], 2.26-6.22) for laparotomy compared with the vaginal approach, operative time >75th percentile (AOR, 1.84; 95% CI, 1.40-2.44), American Society of Anesthesia class ≥ 3 (AOR, 1.79; 95% CI, 1.31-2.43), body mass index ≥40 kg/m(2) (AOR, 2.65; 95% CI, 1.85-3.80), and diabetes mellitus (AOR, 1.54; 95% CI, 1.06-2.24) The occurrence of deep and organ-space SSI was 1.1% (n = 154 women) after hysterectomy.

CONCLUSION

Our finding of the decreased occurrence of superficial SSI after the vaginal approach for hysterectomy reaffirms the role for vaginal hysterectomy as the route of choice for hysterectomy.

The role of vaginal mesh procedures in pelvic organ prolapse surgery in view of complication risk

Synthetic transvaginal mesh has been employed in the treatment of pelvic organ prolapse for more than a decade. As the use of these devices increased during this period so did adverse event reporting. In 2008, the Food and Drug Administration (FDA) Public Health Notification informed physicians and patients of rising concerns with the use of synthetic transvaginal mesh. Shortly thereafter and in parallel to marked increases in adverse event reporting within the Manufacturer and User Device Experience (MAUDE), the FDA released a Safety Communication regarding urogynecologic surgical mesh use. Following this report and in the wake of increased medical industry product withdrawal, growing medicolegal concerns, patient safety, and clinical practice controversy, many gynecologists and pelvic reconstructive surgeons are left with limited long-term data, clinical guidance, and growing uncertainty regarding the role of synthetic transvaginal mesh use in pelvic organ prolapse. This paper reviews the reported complications of synthetic transvaginal mesh with an evidence-based approach as well as providing suggested guidance for the future role of its use amidst the controversy.

Pelvic organ prolapse surgery in Western Australia: a population-based analysis of trends and peri-operative complications

INTRODUCTION AND HYPOTHESIS

We previously described a declining rate of surgery in the treatment of pelvic organ prolapse (POP) in Western Australia. This paper builds on previous work by examining temporal trends and the post-operative risk of in-hospital complications, following first time incident prolapse surgery in a population-based cohort of women.

METHODS

We investigated rates of prolapse surgery between 1988 and 2005 according to age group and concomitant procedure type for 34,509 women whose data were extracted from the WA Data Linkage System. We investigated changes over time in the demographic characteristics of women undergoing surgery and whether the presence of selected concomitant procedures increased the risk of in-hospital complications.

RESULTS

During the study period, 34,509 women underwent an incident surgery for POP. Concomitant hysterectomy was performed in more than half of all surgeries (52.4 %) and a concomitant urinary incontinence (UI) surgery was noted in 25.8 %. 10.9 % of patients experienced a complication of interest, with the highest percentage of complications recorded in women who underwent multi-concomitant surgery. After controlling for age, comorbidity and time period we found that concomitant UI surgery increases in-hospital complications (OR 1.61 95 % CI 1.42-1.83) only in women who have a repair procedure (colporrhaphy and/or enterocele repair). There was no significant effect of concomitant procedures in women who underwent a combined repair and apical prolapse procedure.

CONCLUSIONS

Surgery to treat prolapse is common, has low mortality and concomitant surgery only increases complications when combined with simpler prolapse surgery.

Selection of patients in whom vaginal graft use may be appropriate. Consensus of the 2nd IUGA Grafts Roundtable: optimizing safety and appropriateness of graft use in transvaginal pelvic reconstructive surgery

INTRODUCTION AND HYPOTHESIS

The recent rapid and widespread adoption of the use of mesh, and mesh-based surgical kits for pelvic organ prolapse (POP) repair surgery has occurred largely unchecked, and is now being subjected to critical analysis and re-evaluation.

METHODS

There have been multiple driving forces for this phenomenon, including aggressive marketing by surgical device manufacturing companies, contagious hype among pelvic surgeons and regulatory processes which facilitated relatively rapid marketing of new devices.

RESULTS

Patient-related factors such as indications for mesh use, expected risks and benefits relative to mesh implantation, and appropriately selected outcome measures have been slow to be defined.

CONCLUSIONS

This manuscript reviews the currently available literature in the use of grafts and mesh in POP surgery with a focus on identifying situations where graft use may be appropriate for an individual patient. It also identifies specific clinical situations where mesh use may not be recommended.

Obesity is a predictor of morbidity in 1,629 patients who underwent adrenalectomy

BACKGROUND

We examined the impact of obesity on 30-day outcomes of adrenalectomy using a multi-institutional database.

METHODS

Patients who underwent adrenalectomy in 2005-2008 according to the American College of Surgeons-National Surgical Quality Improvement Project (ACS-NSQIP) data set were grouped by body mass index (BMI): normal weight (BMI=18.5-24.9 kg/m2), overweight (BMI=25.0-29.9 kg/m2), obese (BMI=30.0-34.9 kg/m2), and morbidly obese (BMI≥35 kg/m2). Outcomes of the higher BMI groups were compared to those of the normal BMI group using χ2, analysis of variance (ANOVA), and multivariate regression.

RESULTS

There were 1,629 patients in the study: 22% were normal weight, 31% overweight, 22.2% obese, and 24.7% morbidly obese. Compared to normal-weight patients, obese and morbidly obese patients had a 12.5 and 16.7% increase in operation times (129 vs. 145 and 150 min, respectively, p≤0.01) and sustained more wound complications (0.2 vs. 0.4 and 1.2%, p<0.001), including superficial and deep wound infections (p<0.001 and p<0.01, respectively). Morbid obesity independently predicted overall complications (odds ratio [OR] 2.9, 95% confidence interval [CI]: 1.7-5.7), wound complications (OR 6.1, 95% CI: 2.0-18.9), and septic complications (OR 3.1, 95% CI: 1.1-8.8). Obesity independently predicted longer total time in the operating room (p<0.006). There were no differences in rates of reoperation and length of hospital stay by BMI category.

CONCLUSION

Obesity is an independent risk factor that needs to be considered in surgical decisions regarding adrenalectomy. Morbidly obese adrenalectomy patients are particularly at risk for wound and septic complications.

Obesity and the incidence of bladder injury and urinary retention following tension-free vaginal tape procedure: retrospective cohort study

Background/Aims. Aim of the study was to establish an effect of obesity on the incidence of bladder injury or urinary retention following tension-free vaginal tape (TVT) procedure. Methods. This was a retrospective cohort study based at the Norfolk and Norwich University Hospital in the UK. Study population included 342 cases of TVT procedures. Incidence of bladder injury was 4.7% (16/342). Rate of urinary retention was 9% (31/342). Body mass index (BMI), age, type of analgesia, concomitant prolapse repair, and previous surgery were factors studied. Univariate analysis was performed to establish a relationship between BMI and complications, followed by a multivariable regression analysis to adjust for age, concomitant surgery, type of analgesia, and previous surgery. Results. Neither univariate analysis nor multivariate regression analysis revealed any statistically significant influence of obesity on the incidence of bladder injury or urinary retention. Unadjusted odds ratios and adjusted odds ratios for bladder injury and urinary retention by BMI groups were OR 1.7296 CI 0.4818-6.2097; OR 1.3745 CI 0.5718-3.3043 and adj. OR 2.885 CI 0.603-13.8; adj. OR 1.299 CI 0.502-3.365. Conclusion. Obesity does not appear to influence the rate of bladder injury or urinary retention following TVT procedure.

Is obesity a risk factor for failure and complications after surgery for incontinence and prolapse in women?

PURPOSE

Obese women (body mass index 30 kg/m2 or greater) are considered to be at risk for postoperative complications and failure after stress incontinence surgery. We compare the outcomes in this population with nonobese women (body mass index less than 30 kg/m2) undergoing rectus fascia, porcine dermis and polypropylene sling procedures.

MATERIALS AND METHODS

We retrospectively identified 412 women with a body mass index less than 30 kg/m2 (94 autologous rectus fascia, 157 acellular porcine dermis, 161 transobturator polypropylene mid urethral sling) and 297 with a body mass index of 30 kg/m2 or greater (66 autologous rectus fascia, 114 acellular porcine dermis, 117 transobturator polypropylene mid urethral sling) who underwent sling procedures and other pelvic surgery. Evaluation included SEAPI assessment and quality of life questionnaires. Global cure equaled subjective SEAPI composite=0 and subjective satisfaction. Stress urinary incontinence cure equaled SEAPI (S)=0 and negative cough stress test. Chart review for perioperative data was conducted. Groups and outcomes were statistically compared.

RESULTS

All women had a minimum followup of 12 months. After controlling for body mass index preoperative demographics, SEAPI scores and quality of life indices were not statistically different within each sling group. Global cure and stress urinary incontinence cure rates were significantly higher for nonobese women in each sling group. Statistically significant improvement in SEAPI scores and quality of life indices was achieved for all groups, and there were no statistical differences within each sling group. Overall obese women had no increase in complications compared with nonobese women. The incidence of obstructive sequelae was statistically higher in nonobese women undergoing autologous rectus fascia and transobturator polypropylene mid urethral sling procedures.

CONCLUSIONS

Although cure rates are lower, obese women have significant improvements in quality of life after surgery for stress urinary incontinence. Obesity does not appear to be a risk factor for additional complications during sling and prolapse surgery.

Effect of body mass index on the outcome of infections: a systematic review

It has not been adequately evaluated whether the outcome of infections differs by body-weight category. We performed a systematic review of relevant studies. Eleven studies (one retrospective and 10 prospective cohort studies) were included in this review, involving a total of 3159 hospitalized patients or nursing home residents. Most studies (6/11) referred to lower respiratory tract infections. Seven studies showed an association of patient outcome (mortality in 6/7 studies) with body-weight category. This was shown in multivariate analysis in 4/5 studies that reported relevant data. Obese or morbidly obese patients with infections had worse outcome compared with the rest of the patients or with normal-weight patients, in 4/7 studies that reported relevant data; findings were not significant in the remaining three studies. Patients in the lowest body mass index (BMI) group had worse outcome compared with all other groups combined, in 3/5 studies that reported relevant data; findings were not significant in the remaining two studies. Low BMI was associated with worse outcome in patients with lower respiratory tract infections in 3/4 relevant studies. Although not consistently reported, an association of both ends of the BMI distribution with worse outcome of infections is plausible and merits further investigation.

Obesity and urinary incontinence

Obesity is growing at an alarming rate worldwide. It poses a major health problem that in turn places a huge financial burden on health services. Medical conditions such as diabetes mellitus and ischaemic heart disease are commonly associated with obesity but less well documented is the association between obesity and urinary incontinence. This article reviews the current literature to see whether: (1) obesity predisposes to urinary incontinence; (2) weight loss improves urinary incontinence and (3) obesity affects the surgical outcome. It also covers the surgical and anaesthetic implications of obesity. New minimally invasive surgical techniques make surgical risks acceptable for the obese patient but the anaesthetic risks remain high. Obese patients should not be denied surgery but be made aware of the higher risks. Future research should focus on the impact of obesity on surgical outcomes for continence surgery particularly on intraoperative and postoperative complication rates as well as long-term cure rates.