Jonathan P. Shepherd

Trends in inpatient prolapse procedures in the United States, 1979-2006.

OBJECTIVE We sought to describe national trends for inpatient procedures for pelvic organ prolapse from 1979-2006. STUDY DESIGN The National Hospital Discharge Survey was analyzed for patient and hospital demographics, as were International Classification of Diseases, Ninth Revision, Clinical Modification diagnostic and procedures codes from 1979-2006. Age-adjusted rates (AARs) per 1000 women were calculated using the 1990 US Census data. RESULTS There was a significantly decreasing trend in the AARs for inpatient prolapse procedures, from 2.93-1.52 per 1000 women from 1979-2006. AARs for hysterectomy decreased from 8.39-4.55 per 1000 women from 1979-2006. Over the study period, AARs remained at about the 1979 level among the women>or=52 years old (2.73-2.86; P=.075). In women<52 years old, AARs declined to less than one-third of the 1979 rate (3.03-0.84; P<.001). CONCLUSION AARs for inpatient procedures for prolapse in the United States remained stable for women aged>or=52 years from 1979-2006; rates declined by two-thirds for women aged<52 years.

Hysterectomy surgical trends: a more accurate depiction of the last decade?

OBJECTIVE The objective of the study was to describe trends in hysterectomy route at a large tertiary center. STUDY DESIGN We reviewed all hysterectomies performed at Magee-Womens Hospital from 2000 to 2010. This database was chosen over larger national surveys because it has been tracking laparoscopic procedures since 2000, well before laparoscopic hysterectomy International Classification of Diseases, ninth revision (ICD-9) procedure codes were developed. RESULTS There were 13,973 patients included who underwent hysterectomy at Magee-Womens Hospital. In 2000, 3.3% were laparoscopic (LH), 74.5% abdominal (AH), and 22.2% vaginal hysterectomy (VH). By 2010, LH represented 43.5%, AH 36.3%, VH 17.2%, and 3.0% laparoscopic converted to open (LH→AH). Hysterectomies performed for gynecological malignancy represented 24.4% of cases. The average length of stay for benign LH and VH, 1.0 ± 1.0 and 1.6 ± 1.0 days respectively, was significantly shorter than the average 3.1 ± 2.3 day stay associated with AH (P < .001). The average patient age was 46.9 ± 10.9 years for LH, 51.5 ± 12.1 years for AH, and 51.7 ± 14.1 years for VH, and over the study period there was a significant trend of increasing patient age (b1 = 0.517, 0.583, and 0.513, respectively [P < .001 for all]). CONCLUSION The percentage of LH increased over the last decade and by 2010 had surpassed AH. The 43.4% LH rate in 2010 is much higher than previously reported in national surveys. This likely is due to an increase in the number of laparoscopic procedures being performed over the last few years as well as the ability of our study to capture LH prior to development of appropriate ICD-9 procedure codes. Our unique ability to determine hysterectomy route, which predates appropriate coding, may provide a more accurate characterization of hysterectomy trends.

Abdominal wall endometriosis: 12 years of experience at a large academic institution

OBJECTIVE The objective of the study was to review patient characteristics and intraoperative findings for excised cases of abdominal wall endometriosis (AWE). STUDY DESIGN A 12 year medical record search was performed for cases of excised AWE, and the diagnosis was confirmed on pathological specimen. Descriptive data were collected and analyzed. RESULTS Of 65 patients included, the primary clinical presentation was abdominal pain and/or a mass/lump (73.8% and 63.1%, respectively). Most patients had a history of cesarean section (81.5%) but 6 patients (9.2%) had no prior surgery. Time from the initial surgery to presentation ranged from 1 to 32 years (median, 7.0 years), and time from the most recent relevant surgery ranged from 1 to 32 years (median, 4.0 years). Five patients (7.7%) required mesh for fascial closure following the resection of the AWE. We were unable to demonstrate a correlation between the increasing numbers of open abdominal surgeries and the time to presentation or depth of involvement. Age, body mass index, and parity also were not predictive of depth of involvement. There were increased rates of umbilical lesions (75% vs 5.6%, P < .001) in nulliparous compared with multiparous women as well as in women without a history of cesarean section (66.7% vs 1.9%, P < .001). CONCLUSION In women with a mass or pain at a prior incision, the differential diagnosis should include AWE. Although we were unable to demonstrate specific characteristics predictive for AWE, a large portion of our population had a prior cesarean section, suggesting a correlation.

The minimum important difference for the International consultation on incontinence questionnaire - Urinary incontinence short form in women with stress urinary incontinence

Minimum important difference (MID) estimates the minimum degree of change in an instruments score that correlates with a patients subjective sense of improvement. We aimed to determine the MID for the International Consultation on Incontinence Questionnaire‐Urinary Incontinence Short Form (ICIQ‐UI SF) using both anchor based and distribution based methods derived using data from the Trial of Midurethral Slings (TOMUS).

Retropubic and transobturator midurethral slings: a decision analysis to compare outcomes including efficacy and complications.

Introduction and hypothesisThe objective of this paper is to compare retropubic (RP) and transobturator (TO) midurethral slings using decision analysis techniques.MethodsA decision analysis was constructed including efficacy and complication data. Probability of complication-free surgery and overall utility were analyzed using two models: ALL (all 42 trials) and RCT (seven randomized controlled trials with higher quality data, but missing data on some complications).ResultsSurgery was complication-free more frequently with TO approach with 83.7% vs. 55.7% (ALL) and 70.9% vs. 62.8% (RCT). One-year overall utility favored TO in the ALL model (0.943 vs. 0.895). Conversely, the RCT model favored RP (0.936 vs. 0.910). These differences were both less than published minimally important differences (MID) for utilities. Multiple one-way sensitivity analyses confirmed robustness of results.ConclusionsThe difference between the two surgeries in both utility-based models was less than the MID. Therefore, the separate approaches are highly comparable with similar overall utility. Complications are more frequent with the retropubic approach.

Genetic contributions to urgency urinary incontinence in women

PURPOSE We identify genetic variants associated with urgency urinary incontinence in postmenopausal women. MATERIALS AND METHODS A 2-stage genome-wide association analysis was conducted to identify variants associated with urgency urinary incontinence. The WHI GARNET substudy with 4,894 genotyped post-reproductive white women was randomly split into independent discovery and replication cohorts. Genome-wide imputation was performed using IMPUTE2 with the 1000 Genomes ALL Phase I integrated variant set as a reference. Controls reported no urgency urinary incontinence at enrollment or followup. Cases reported monthly or greater urgency urinary incontinence and leaked sufficiently to wet/soak underpants/clothes. Logistic regression models were used to predict urgency urinary incontinence case vs control status based on genotype, assuming additive inheritance. Age, obesity, diabetes and depression were included in the models as covariates. RESULTS Following quality control, 975,508 single nucleotide polymorphisms in 2,241 cases (discovery 1,102; replication 1,133) and 776 controls (discovery 405, replication 371) remained. Genotype imputation resulted in 9,077,347 single nucleotide polymorphisms and insertions/deletions with minor allele frequency greater than 0.01 available for analysis. Meta-analysis of the discovery and replication samples identified 6 loci on chromosomes 5, 10, 11, 12 and 18 associated with urgency urinary incontinence at p <10(-6). Of the loci 3 were within genes, the zinc finger protein 521 (ZFP521) gene on chromosome 18q11, the ADAMTS16 gene on chromosome 5p15 and the CIT gene on chromosome 12q24. The other 3 loci were intergenic. CONCLUSIONS Although environmental factors also likely contribute, this first exploratory genome-wide association study for urgency urinary incontinence suggests that genetic variants in the ZFP521, CIT and ADAMTS16 genes might account for some of the observed heritability of the condition.

InterStim Sacral Neuromodulation and Botox Botulinum-A Toxin Intradetrusor Injections for Refractory Urge Urinary Incontinence: A Decision Analysis Comparing Outcomes Including Efficacy and Complications.

Objective: Overactive bladder is a common disease for which current pharmaceutical therapy is often unsatisfactory. Newer modalities, including Botox and InterStim, can be used when antimuscarinics fail. We compare InterStim and Botox using decision analysis. Methods: A Markov state transition decision analysis model was constructed using values for efficacy and complications from the literature. Overall utility was compared monthly. Multiple 1-way sensitivity analyses were performed. Results: For every month during the simulation, overall utility was higher for Botox than InterStim. After 54 months, cumulative utility was 3.86 versus 3.74, favoring Botox for an average yearly quality-adjusted life-year value of 0.86 versus 0.83. All differences were less than minimally important differences for utilities. Few meaningful thresholds were established supporting the robustness of the model. Conclusions: Until appropriately powered randomized controlled trials are available, both InterStim and Botox are reasonable and effective strategies with similar outcomes.

Cost analysis when open surgeons perform minimally invasive hysterectomy.

Background and Objective: The costs to perform a hysterectomy are widely variable. Our objective was to determine hysterectomy costs by route and whether traditionally open surgeons lower costs when performing laparoscopy versus robotics. Methods: Hysterectomy costs including subcategories were collected from 2011 to 2013. Costs were skewed, so 2 statistical transformations were performed. Costs were compared by surgeon classification (open, laparoscopic, or robotic) and surgery route. Results: A total of 4,871 hysterectomies were performed: 34.2% open, 50.7% laparoscopic, and 15.1% robotic. Laparoscopic hysterectomy had the lowest total costs (P < .001). By cost subcategory, laparoscopic hysterectomy was lower than robotic hysterectomy in 6 and higher in 1. When performing robotic hysterectomy, open and robotic surgeon costs were similar. With laparoscopic hysterectomy, open surgeons had higher costs than laparoscopic surgeons for 1 of 2 statistical transformations (P = .007). Open surgeons had lower costs performing laparoscopic hysterectomy than robotic hysterectomy with robotic maintenance and depreciation included (P < .001) but similar costs if these variables were excluded. Conclusion: Although laparoscopic hysterectomy had lowest costs overall, robotics may be no more costly than laparoscopic hysterectomy when performed by surgeons who predominantly perform open hysterectomy.

Preoperative voiding detrusor pressures do not predict stress incontinence surgery outcomes

Introduction and hypothesisThe aim of this study was to determine whether preoperative voiding detrusor pressures were associated with postoperative outcomes after stress incontinence surgery.MethodsOpening detrusor pressure, detrusor pressure at maximum flow (pdet Qmax), and closing detrusor pressure were assessed from 280 valid preoperative urodynamic studies in subjects without advanced prolapse from a multicenter randomized trial comparing Burch and autologous fascia sling procedures. These pressures were compared between subjects with and without overall success, stress-specific success, postoperative detrusor overactivity, and postoperative urge incontinence using independent sample t tests.ResultsThere were no clinically or statistically significant differences in mean preoperative voiding detrusor pressures in any comparison of postoperative outcomes.ConclusionsWe found no evidence that preoperative voiding detrusor pressures predict outcomes in women with stress predominant urinary incontinence undergoing Burch or autologous fascial sling procedures.

Sacral neuromodulation and intravesical botulinum toxin for refractory overactive bladder.

Purpose of review To provide an overview of sacral neuromodulation (SNM) and intravesical botulinum toxin (BTX) injections in the treatment of refractory overactive bladder (OAB) and urge urinary incontinence. Recent findings SNM has been a successful treatment option for OAB for over a decade with efficacy rates reported between 50 and 90%. Recently, intravesical BTX has been studied as a less invasive but more transient option with similar efficacy rates. Side-effect profiles differ greatly between the treatments, with elevated postvoid residuals and urinary tract infections most commonly occurring after botulinum injection and pain or device revision or removal occurring with SNM. Recent studies have tried to elucidate the optimal dosing regimen for BTX and patient variables predicting success for both therapies in order to improve outcomes while reducing adverse events. Summary Both intravesical BTX and SNM have been shown to be effective treatment options for OAB. Further research is needed to determine equivalence or if one therapy is superior and to identify the ideal patient population for each therapy.