Evaluation of Wound Photography for Remote Postoperative Assessment of Surgical Site Infections.

Importance: Surgeons are increasingly interested in using mobile and online applications with wound photography to monitor patients after surgery. Early work using remote care to diagnose surgical site infections (SSIs) demonstrated improved diagnostic accuracy using wound photographs to augment patients' electronic reports of symptoms, but it is unclear whether these findings are reproducible in real-world practice. Objective: To determine how wound photography affects surgeons' abilities to diagnose SSIs in a pragmatic setting. Design, Setting, and Participants: This prospective study compared surgeons' paired assessments of postabdominal surgery case vignettes with vs without wound photography for detection of SSIs. Data for case vignettes were collected prospectively from May 1, 2007, to January 31, 2009, at Erasmus University Medical Center, Rotterdam, the Netherlands, and from July 1, 2015, to February 29, 2016, at Vanderbilt University Medical Center, Nashville, Tennessee. The surgeons were members of the American Medical Association whose self-designated specialty is general, abdominal, colorectal, oncologic, or vascular surgery and who completed internet-based assessments from May 21 to June 10, 2016. Intervention: Surgeons reviewed online clinical vignettes with or without wound photography. Main Outcomes and Measures: Surgeons' diagnostic accuracy, sensitivity, specificity, confidence, and proposed management with respect to SSIs. Results: A total of 523 surgeons (113 women and 410 men; mean [SD] age, 53 [10] years) completed a mean of 2.9 clinical vignettes. For the diagnosis of SSIs, the addition of wound photography did not change accuracy (863 of 1512 [57.1%] without and 878 of 1512 [58.1%] with photographs). Photographs decreased sensitivity (from 0.58 to 0.50) but increased specificity (from 0.56 to 0.63). In 415 of 1512 cases (27.4%), the addition of wound photography changed the surgeons' assessment (215 of 1512 [14.2%] changed from incorrect to correct and 200 of 1512 [13.2%] changed from correct to incorrect). Surgeons reported greater confidence when vignettes included a wound photograph compared with vignettes without a wound photograph, regardless of whether they correctly identified an SSI (median, 8 [interquartile range, 6-9] vs median, 8 [interquartile range, 7-9]; P < .001) but they were more likely to undertriage patients when vignettes included a wound photograph, regardless of whether they correctly identified an SSI. Conclusions and Relevance: In a practical simulation, wound photography increased specificity and surgeon confidence, but worsened sensitivity for detection of SSIs. Remote evaluation of patient-generated wound photographs may not accurately reflect the clinical state of surgical incisions. Effective widespread implementation of remote postoperative assessment with photography may require additional development of tools, participant training, and mechanisms to verify image quality.

Heller myotomy versus Heller myotomy with Dor fundoplication for achalasia: long-term symptomatic follow-up of a prospective randomized controlled trial.

BACKGROUND: Our prior randomized controlled trial of Heller myotomy alone versus Heller plus Dor fundoplication for achalasia from 2000 to 2004 demonstrated comparable postoperative resolution of dysphagia but less gastroesophageal reflux after Heller plus Dor. Patient-reported outcomes are needed to determine whether the findings are sustained long-term. METHODS: We actively engaged participants from the prior randomized cohort, making up to six contact attempts per person using telephone, mail, and electronic messaging. We collected patient-reported measures of dysphagia and gastroesophageal reflux using the Dysphagia Score and the Gastroesophageal Reflux Disease-Health-Related Quality of Life (GERD-HRQL) instrument. Patient-reported re-interventions for dysphagia were verified by obtaining longitudinal medical records. RESULTS: Among living participants, 27/41 (66%) were contacted and all completed the follow-up study at a mean of 11.8 years postoperatively. Median Dysphagia Scores and GERD-HRQL scores were slightly worse for Heller than Heller plus Dor but were not statistically different (6 vs 3, p = 0.08 for dysphagia, 15 vs 13, p = 0.25 for reflux). Five patients in the Heller group and 6 in Heller plus Dor underwent re-intervention for dysphagia with most occurring more than five years postoperatively. One patient in each group underwent redo Heller myotomy and subsequent esophagectomy. Nearly all patients (96%) would undergo operation again. CONCLUSIONS: Long-term patient-reported outcomes after Heller alone and Heller plus Dor for achalasia are comparable, providing support for either procedure.

Identifying Futile Interfacility Surgical Transfers.

Surgeons perceive that some surgical transfers are futile, but the incidence and risk factors of futile transfer are not quantified. Identifying futile interfacility transfers could save cost and undue burdens to patients and families. We sought to describe the incidence and factors associated with futile transfers. We conducted a retrospective cohort study from 2009 to 2013 including patients transferred to a tertiary referral center for general or vascular surgical care. Futile transfers were defined as resulting in death or hospice discharge within 72 hours of transfer without operative, endoscopic, or radiologic intervention. One per cent of patient transfers were futile (27/1696). Characteristics of futile transfers included older age, higher comorbidity burden and illness severity, vascular surgery admission, Medicare insurance, and surgeon documentation of end-stage disease as a factor in initial decision-making. Among futile transfers, 82 per cent were designated as do not resuscitate (vs 9% of nonfutile, P < 0.01), and 59 per cent received a palliative care consult (vs 7%, P < 0.01). A small but salient proportion of transferred patients undergo deliberate care de-escalation and early death or hospice discharge without intervention. Efforts to identify such patients before transfer through improved communication between referring and accepting surgeons may mitigate burdens of transfer and facilitate more comfortable deaths in patients' local communities.

Association Between Response to Acid-Suppression Therapy and Efficacy of Antireflux Surgery in Patients With Extraesophageal Reflux.

BACKGROUND & AIMS: The effectiveness of antireflux surgery (ARS) varies among patients with extraesophageal manifestations of gastroesophageal reflux disease (GERD). By studying a cohort of patients with primary extraesophageal symptoms and abnormal physiologic markers for GERD, we aimed to identify factors associated with positive outcomes from surgery, and compare outcomes to those with typical esophageal manifestations of GERD. METHODS: We performed a retrospective cohort study to compare adult patients with extraesophageal and typical reflux symptoms who underwent de novo ARS from 2004 through 2012 at a tertiary care center. All 115 patients (79 with typical GERD and 36 with extraesophageal manifestations of GERD) had evidence of abnormal distal esophageal acid exposure based on pH testing or endoscopy. The principle outcome was time to primary symptom recurrence after surgery, based on patient reports of partial or total recurrence of symptoms at follow-up visits. Patients were followed up for a median duration of 66 months (interquartile range, 52-77 mo). RESULTS: The median time to recurrence of symptoms in the overall cohort was 68 months (11.5 months in the extraesophageal cohort vs >132 months in the typical cohort). Symptom recurrence after ARS was associated with having primarily extraesophageal symptoms (adjusted hazard ratio, 2.34; 95% confidence interval, 1.31-4.17) and poor preoperative symptom response to acid-suppression therapy (AST) (hazard ratio, 3.85; 95% confidence interval, 2.05-7.22). Patients with primary extraesophageal symptoms who had a full or partial preoperative AST response experienced lower rates of symptom recurrence compared to patients with poor AST response (P < .01). The rate of symptom recurrence was lowest among patients with primary typical reflux symptoms who had a partial or full symptom response to AST (P < .01). The severity of acid reflux on pH testing, symptom indices, severity of esophagitis, and hiatal hernia size were not associated with symptom response. CONCLUSIONS: In a retrospective study, we found the effectiveness of ARS to be less predictable in patients with extraesophageal symptoms of GERD than in patients with typical GERD. Response to AST before surgery was associated with ARS effectiveness in patients with extraesophageal reflux symptoms. Caution should be exercised when advocating ARS for patients with extraesophageal symptoms that do not respond to AST.

Hidden Morbidity of Ventral Hernia Repair with Mesh: As Concerning as Common Bile Duct Injury?

BACKGROUND: Ventral hernia repair with mesh is increasingly common, but the incidence of long-term complications that necessitate mesh explantation is unknown. We aimed to determine the epidemiology of mesh explantation after ventral hernia repair and to compare this with common bile duct injury, a dreaded complication of laparoscopic cholecystectomy. STUDY DESIGN: We evaluated a retrospective cohort of patients undergoing ventral hernia repair by linking the all-payers State Inpatient Databases and State Ambulatory Surgery Databases for New York, California, and Florida. We followed patients longitudinally from 2005 to 2011 for the primary end point of mesh explantation, designated by concurrent procedure codes for ventral hernia repair and foreign body removal. We determined time to mesh explantation and calculated cumulative costs for surgical care, comparing these with historical data for common bile duct injury. RESULTS: During the study period, 619,751 patients underwent at least one ventral hernia repair (91% open, 9% laparoscopic). In a mean follow-up of 3 years, 438 patients (0.07%) had mesh removed at a median of 346 days after repair. Median cumulative cost for patients requiring mesh explantation was $21,889 vs $6,983 without (p < 0.01). Rates of mesh explantation and costs were on par with laparoscopic common bile duct injury, based on published data, but occurred later in the postoperative course. CONCLUSIONS: By this conservative estimate, complications of ventral hernia repair with implantable mesh are comparably as frequent as for common bile duct injury, but occur later in a patient's experience. Long-term follow-up is critically necessary to fully understand the ramifications of implanted devices.

Current trends in the practice of endoscopy among surgeons in the USA.

BACKGROUND: The diagnostic and therapeutic roles for endoscopic intervention are expanding. To continue emphasis on endoscopy in surgical training, The Society of American Gastrointestinal and Endoscopic Surgeons has developed the Fundamentals of Endoscopic Surgery (FES) course to standardize and assess endoscopy training. However, little demographic information exists about the current practice of endoscopy by general surgeons and how to best integrate endoscopic skills into surgical training. METHODS: A survey to collect data regarding the current practice patterns of endoscopy was sent to surgeons with a valid email address in the American Medical Association masterfile. Information regarding the type of training (academic vs. community general surgery residency) and current practice environment (academic medical center vs. community hospital) was collected. The respondents' current practice volume of upper endoscopy and colonoscopy over the prior year was stratified into three groups: rare (<1 per month), moderate (1-10 per month), and frequent (>10 per month). Pearson's Chi-squared test was used to analyze the data. RESULTS: The survey was sent to 9902 general surgeons. There were 767 who provided answers regarding their current practice of endoscopy. Mean time in practice was 18 ± 10 years, 87 % were male, and 83 % practiced in a metropolitan area. Respondents who trained at academic general surgery programs were less likely than those at community programs to frequently perform colonoscopy (17.3 vs. 27.9 %, p < 0.05) and upper endoscopy (11.8 vs. 17.1 %, p < 0.05). Those who currently practice in academic medical centers were also less likely to be frequent performers of colonoscopy (5.6 vs. 24.7 %, p < 0.05) and upper endoscopy (9.8 vs. 14.8 %, p < 0.05) than those who practice at community hospitals. CONCLUSIONS: The type of residency training and current practice setting of general surgeons has a significant influence on the volume of endoscopic procedures performed. This study identifies areas where more emphasis on endoscopic skills training is needed, such as FES.

Using Quality Improvement Principles to Enhance Long-Term Completion of Patient-Reported Outcomes after Ventral Hernia Repair.

BACKGROUND: Ventral hernia repair (VHR) is a commonly performed surgical procedure. Unfortunately, long-term prospective information about quality of life and outcomes after VHR has been challenging to obtain. Decoupling follow-up from clinical visits via patient-reported outcomes (PROs) has been proposed as a means of achieving better long-term assessments after VHR. The Americas Hernia Society Quality Collaborative (AHSQC) is a national quality improvement (QI) effort in hernia repair that uses PROs to obtain long-term follow-up. However, the modality of PRO engagement to maximize participation has not been well established. A formal QI initiative was undertaken to determine if long-term PRO follow-up could be increased at a single AHSQC site by adding telephone communication to email communication for long-term postoperative VHR assessment. METHODS: Between September 2015 and July 2016, the long-term (greater than 1 year) AHSQC PRO completion rates after VHR at our institution were analyzed using plan-do-study-act cycles. Two interventions were implemented: contacting patients by telephone and changing timing of telephone calls. RESULTS: Two hundred thirty-two patients were identified, of whom 99 (42.7%) met eligibility criteria. Before this initiative, the long-term PRO completion rate was 16.3% in postoperative VHR patients. The completion rate after introducing telephone calls (intervention 1) was 35.7% and after changing the timing of telephone calls (intervention 2), was 55.1%. The mean participation rate was 45.4% (± 9.7%). CONCLUSIONS: A telephone-based approach markedly improved long-term PRO participation rates in postoperative VHR patients. Ultimately, a combination of email and telephone communication may be necessary to achieve higher levels of PRO follow-up in the VHR population.

Cancer Survivorship: Defining the Incidence of Incisional Hernia After Resection for Intra-Abdominal Malignancy.

BACKGROUND: Cancer survivorship focuses largely on improving quality of life. We aimed to determine the rate of ventral incisional hernia (VIH) formation after cancer resection, with implications for survivorship. METHODS: Patients without prior VIH who underwent abdominal malignancy resections at a tertiary center were followed up to 2 years. Patients with a viewable preoperative computed tomography (CT) scan and CT within 2 years postoperatively were included. Primary outcome was postoperative VIH on CT, reviewed by a panel of surgeons uninvolved with the original operation. Factors associated with VIH were determined using Cox proportional hazards regression. RESULTS: 1847 CTs were reviewed among 491 patients (59 % men), with inter-rater reliability 0.85 for the panel. Mean age was 60 ± 12 years; mean follow-up time 13 ± 8 months. VIH occurred in 41 % and differed across diagnoses: urologic/gynecologic (30 %), colorectal (53 %), and all others (56 %) (p < 0.001). Factors associated with VIH (adjusting for stage, age, adjuvant therapy, smoking, and steroid use) included: incision location [flank (ref), midline, hazard ratio (HR) 6.89 (95 %CI 2.43-19.57); periumbilical, HR 6.24 (95 %CI 1.84-21.22); subcostal, HR 4.55 (95 %CI 1.51-13.70)], cancer type [urologic/gynecologic (ref), other {gastrointestinal, pancreatic, hepatobiliary, retroperitoneal, and others} HR 1.86 (95 %CI 1.26-2.73)], laparoscopic-assisted operation [laparoscopic (ref), HR 2.68 (95 %CI 1.44-4.98)], surgical site infection [HR 1.60 (95 %CI 1.08-2.37)], and body mass index [HR 1.06 (95 %CI 1.03-1.08)]. CONCLUSIONS: The rate of VIH after abdominal cancer operations is high. VIH may impact cancer survivorship with pain and need for additional operations. Further studies assessing the impact on QOL and prevention efforts are needed.

Unnecessary Transfers for Acute Surgical Care: Who and Why?

Interhospital transfers for acute surgical care occur commonly, but without clear guidelines or protocols. Transfers may subject patients and delivery systems to significant burdens without clear clinical benefit. The incidence and factors associated with unnecessary transfers are not well described. We conducted a retrospective cohort study of patient transfers within a regional referral network to a tertiary center for nontrauma acute surgical care from 2009 to 2013. Clinically unnecessary transfers were defined as transfers that resulted in no intervention (operation, endoscopy, or interventional radiology procedure) and discharge to home within 72 hours. We performed bivariate and multivariate logistic regression analyses. The study population included 2177 patient transfers, 19 per cent of which were determined to be clinically unnecessary. After adjustment, clinically unnecessary transfers were more commonly performed for patient request (odds ratio = 2.52, 95% confidence interval = 1.60-3.99), continuity of care (1.87, 1.44-2.42), and care by urologic (1.50, 1.06-2.13) and vascular services (1.44, 1.03-2.01). Patients with higher comorbidity and severity of illness scores were less likely to have unnecessary transfers. The burden of unnecessary transfers could be mitigated by identifying appropriate transfer candidates through mutually developed guidelines, interfacility collaboration, and increased use of remote care to provide surgical subspecialty consultation and maintain continuity.

Interhospital transfer for acute surgical care: does delay matter?

BACKGROUND: Delays to definitive care are associated with poor outcomes after trauma and medical emergencies. It is unknown whether inter-hospital transfer delays affect outcomes for nontraumatic acute surgical conditions. METHODS: We performed a retrospective cohort study of patient transfers for acute surgical conditions within a regional transfer network from 2009 to 2013. Delay was defined as more than 24 hours from presentation to transfer request and categorized as 1 or 2+ days. The primary outcome was post-transfer death or hospice. Bivariate and multivariable logistic regression were performed. RESULTS: The cohort included 2,091 patient transfers. Delays of 2 or more days were associated with death or hospice in unadjusted analyses, but there was no difference after adjustment. Predictors of post-transfer death or hospice included older age, higher comorbidity scores, and greater severity of illness. CONCLUSIONS: Delays in transfer request were not associated with post-transfer mortality or discharge to hospice, suggesting effective triage of nontraumatic acute surgical patients.

Patient reported outcomes after incisional hernia repair-establishing the ventral hernia recurrence inventory.

BACKGROUND: Assessing incisional hernia recurrence typically requires a clinical encounter. We sought to determine if patient-reported outcomes (PROs) could detect long-term recurrence. METHODS: Adult patients 1 to 5 years after incisional hernia repair were prospectively asked about recurrence, bulge, and pain at the original repair site. Using dynamic abdominal sonography for hernia to detect recurrence, performance of each PRO was determined. Multivariable regression was used to evaluate PRO association with recurrence. RESULTS: Fifty-two patients enrolled with follow-up time 46 ± 13 months. A patient-reported bulge was 85% sensitive, and 81% specific to detect recurrence. Patients reporting no bulge and no pain had 0% chance of recurrence. In multivariable analysis, patients reporting a bulge were 18 times more likely to have a recurrence than those without (95% confidence interval, 3.7 to 90.0; P < .001). CONCLUSIONS: This preliminary study demonstrates that PROs offer a promising means of detecting long-term recurrence after incisional hernia repair, which can help facilitate quality improvement and research efforts.

Insurance status influences emergent designation in surgical transfers.

BACKGROUND: There is a perception among surgeons that hospitals disproportionately transfer unfavorably insured patients for emergency surgical care. Emergency medical condition (EMC) designation mandates referral center acceptance of patients for whom transfer is requested. We sought to understand whether unfavorably insured patients are more likely to be designated as EMCs. MATERIALS AND METHODS: A retrospective cohort study was performed on patient transfers from a large network of acute care facilities to emergency surgery services at a tertiary referral center from 2009-2013. Insurance was categorized as favorable (commercial or Medicare) or unfavorable (Medicaid or uninsured). The primary outcome, transfer designation as EMC or non-EMC, was evaluated using multivariable logistic regression. A secondary analysis evaluated uninsured patients only. RESULTS: There were 1295 patient transfers in the study period. Twenty percent had unfavorable insurance. Favorably insured patients were older with fewer nonwhite, more comorbidities, greater illness severity, and more likely transferred for care continuity. More unfavorably insured patients were designated as EMCs (90% versus 84%, P < 0.01). In adjusted models, there was no association between unfavorable insurance and EMC transfer (odds ratio [OR], 1.61; 95% confidence interval [CI], 0.98-2.69). Uninsured patients were more likely to be designated as EMCs (OR, 2.27; CI, 1.08-4.77). CONCLUSIONS: The finding that uninsured patients were more likely to be designated as EMCs suggests nonclinical variation that may be mitigated by clearer definitions and increased interfacility coordination to identify patients requiring transfer for EMCs.

Surgeons, ERCP, and laparoscopic common bile duct exploration: do we need a standard approach for common bile duct stones?

BACKGROUND: Variation exists in the management of choledocholithiasis (CDL). This study evaluated associations between demographic and practice-related characteristics and CDL management. METHODS: A 22-item, web-based survey was administered to US general surgeons. Respondents were classified into metropolitan or nonmetropolitan groups by zip code. Univariate tests and multivariable logistic regression were used to determine factors associated with CDL management preferences. RESULTS: The survey was sent to 32,932 surgeons; 9902 performed laparoscopic cholecystectomy within the last year; 750 of 771 respondents had a valid US zip code and were included in the analysis. Mean practice time was 18 ± 10 years, 87% were male, and 83% practiced in a metropolitan area. For preoperatively known CDL, 86% chose preoperative endoscopic retrograde cholangiopancreatography (ERCP). Those in metropolitan areas were more likely to select preoperative ERCP than those in nonmetropolitan areas (88 vs. 79%, p < 0.001). For CDL discovered intraoperatively, 30% selected laparoscopic common bile duct exploration (LCBDE) as their preferred method of management with no difference between metropolitan and nonmetropolitan areas (30 vs. 26%, p = 0.335). The top reasons for not performing LCBDE were: having a reliable ERCP proceduralist available, lack of equipment, and lack of comfort performing LCBDE. Factors associated with preoperative ERCP were: metropolitan status, selective intraoperative cholangiography (IOC), and availability of a reliable ERCP proceduralist. Those who perform selective IOC were 70% less likely to prefer LCBDE (OR 0.32, 95% CI 0.18-0.57, p < 0.001). Those with a reliable ERCP proceduralist available were 90% less likely to prefer LCBDE (OR 0.10, 95% CI 0.04-0.26, p < 0.001). CONCLUSIONS: The majority of respondents preferred ERCP for the management of CDL. Having a reliable ERCP proceduralist available, use of selective IOC, and metropolitan status were independently associated with preoperative ERCP. Postoperative ERCP was preferred for managing intraoperatively discovered CDL. Many surgeons are uncomfortable performing LCBDE, and increased training may be needed.

Postoperative Care Using a Secure Online Patient Portal: Changing the (Inter)Face of General Surgery.

BACKGROUND: Many patients seek greater accessibility to health care. Meanwhile, surgeons face increasing time constraints due to workforce shortages and elevated performance demands. Online postoperative care may improve patient access while increasing surgeon efficiency. We aimed to evaluate patient and surgeon acceptance of online postoperative care after elective general surgical operations. STUDY DESIGN: A prospective pilot study within an academic general surgery service compared online and in-person postoperative visits from May to December 2014. Included patients underwent elective laparoscopic cholecystectomy, laparoscopic ventral hernia repair, umbilical hernia repair, or inguinal hernia repair by 1 of 5 surgeons. Patients submitted symptom surveys and wound pictures, then corresponded with their surgeons using an online patient portal. The primary outcome was patient-reported acceptance of online visits in lieu of in-person visits. Secondary outcomes included detection of complications via online visits, surgeon-reported effectiveness, and visit times. RESULTS: Fifty patients completed both online and in-person visits. Online visits were acceptable to most patients as their only follow-up (76%). For 68% of patients, surgeons reported that both visit types were equally effective, while clinic visits were more effective in 24% and online visits in 8%. No complications were missed via online visits, which took significantly less time for patients (15 vs 103 minutes, p < 0.01) and surgeons (5 vs 10 minutes, p < 0.01). CONCLUSIONS: In this population, online postoperative visits were accepted by patients and surgeons, took less time, and effectively identified patients who required further care. Further evaluation is needed to establish the safety and potential benefit of online postoperative visits in specific populations.

Incisional Hernia Classification Predicts Wound Complications Two Years after Repair.

Classification of ventral hernias (VHs) into categories that impact surgical outcome is not well defined. The European Hernia Society (EHS) classification divides ventral incisional hernias by midline or lateral location. This study aimed to determine whether EHS classification is associated with wound complications after VH repair, indicated by surgical site occurrences (SSOs). A retrospective cohort study of patients who underwent VH repair at a tertiary referral center between July 1, 2005 and May 30, 2012, was performed. EHS classification, comorbidities, and operative details were determined. Primary outcome was SSO within two years, defined as an infection, wound dehiscence, seroma, or enterocutaneous fistula. There were 538 patients included, and 51.5 per cent were female, with a mean age of 54.2 ± 12.4 years and a mean body mass index of 32.4 ± 8.6 kg/m(2). Most patients had midline hernias (87.0%, n = 468). There were 47 patients (8.7%) who had a lateral hernia, and 23 patients (4.3%) whose repair included both midline and lateral components. Overall rate of SSO was 39 per cent (n = 211) within two years. The rate of SSO by VH location was: 39 per cent (n = 183) for midline, 23 per cent (n = 11) for lateral, and 74 per cent (n = 17) for VHs with midline and lateral components (P = <0.001). Patients whose midline hernia spanned more than one EHS category also had a higher rate of SSOs (P = 0.001). VHs are often described by transverse dimension alone, but a more descriptive classification system offers a richness that correlates with outcomes.

Previous Methicillin-Resistant Staphylococcus aureus Infection Independent of Body Site Increases Odds of Surgical Site Infection after Ventral Hernia Repair.

BACKGROUND: Methicillin-resistant Staphylococcus aureus infections can be difficult to manage in ventral hernia repair (VHR). We aimed to determine whether a history of preoperative MRSA infection, regardless of site, confers increased odds of 30-day surgical site infection (SSI) after VHR. STUDY DESIGN: A retrospective cohort study of patients undergoing VHR with class I to III wounds between 2005 and 2012 was performed using Vanderbilt University Medical Center's Perioperative Data Warehouse. Preoperative MRSA status, site of infection, and 30-day SSI were determined. Univariate and multivariate analyses adjusting for confounding factors were performed to determine whether a history of MRSA infection was independently associated with SSIs. RESULTS: A total of 768 VHR patients met inclusion criteria, of which 46% were women. There were 54 (7%) preoperative MRSA infections (MRSA positive); 15 (28%) soft tissue, 9 (17%) bloodstream, 4 (7%) pulmonary, 3 (6%) urinary, and 5 (9%) other. Overall SSI rate was 10% (n = 80), SSI rate in the MRSA-positive group was 33% (n = 18), compared with 9% (n = 62) in controls (p < 0.001). Multivariate analysis demonstrated that a history of MRSA infection significantly increased odds of 30-day SSI after VHR by 2.3 times (95% CI, 1.1-4.8; p = 0.035). Other factors associated with postoperative SSI were performance of myofascial release, increasing BMI, length of operation, open repair, and clean-contaminated wound classification. CONCLUSIONS: A history of site-independent MRSA infection confers significantly increased odds of 30-day SSI after VHR. Additional investigation is needed to determine perioperative treatment regimens that might decrease odds of SSI in VHR, and optimal prosthetic types and techniques for this population.

The importance of surgeon-reviewed computed tomography for incisional hernia detection: a prospective study.

Patients with incisional hernias or abdominal pain are frequently referred with abdominal computed tomography (CT) scans. The purpose of this study was to determine the sensitivity and specificity of a CT radiology report for the detection of incisional hernias. General surgery patients with a history of an abdominal operation and a recent viewable abdominal CT scan were enrolled prospectively. Patients with a stoma, fistula, or soft tissue infection were excluded. The results of the radiology reports were compared with blinded, surgeon-interpreted CT for each patient. Testing characteristics including sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were calculated. One hundred eighty-one patients were enrolled with a mean age of 54 years. Sixty-eight per cent were women. Hernia prevalence was 55 per cent, and mean hernia width was 5.2 cm. The radiology report had a sensitivity and specificity of 79 per cent and 94 per cent, respectively, for hernia diagnosis. The PPV and NPV were 94 and 79 per cent, respectively. Reliance on the CT report alone underestimates the presence of incisional hernia. Referring physicians should not use CT as a screening modality for detection of hernias. Referral to a surgeon for evaluation before imaging may provide more accurate diagnosis and potentially decrease the cost of caring for this population.

Comparative Evaluation of Dynamic Abdominal Sonography for Hernia and Computed Tomography for Characterization of Incisional Hernia.

IMPORTANCE: Previous work has demonstrated that dynamic abdominal sonography for hernia (DASH) is accurate for the diagnosis of incisional hernia. The usefulness of DASH for characterization of incisional hernia is unknown. OBJECTIVE: To determine whether DASH can be objectively used to characterize incisional hernias by measurement of mean surface area (MSA). DESIGN, SETTING, AND PARTICIPANTS: A prospective cohort study was conducted. A total of 109 adults with incisional hernia were enrolled between July 1, 2010, and March 1, 2012. Patients with a stoma, fistula, or soft-tissue infection were excluded. INTERVENTIONS: DASH was performed by a surgeon to determine the maximal transverse and craniocaudal dimensions of the incisional hernia. A separate surgeon, blinded to the DASH results, performed the same measurements using computed tomography (CT). MAIN OUTCOMES AND MEASURES: The MSA was calculated, and the difference in MSA by DASH and CT was compared using the Wilcoxon signed rank test. Subset analysis was performed with patients stratified into nonobese, obese, and morbidly obese groups. We hypothesized that there was no significant difference between MSA as measured by DASH compared with CT. RESULTS: A total of 109 patients were enrolled (mean age, 56 years; mean body mass index, 32.2 [calculated as weight in kilograms divided by height in meters squared]; and 67.0% women). The mean (SD) MSA measurements were similar between the modalities: DASH, 41.8 (67.5) cm2 and CT, 44.6 (78.4) cm2 (P = .82). The MSA measurements determined by DASH and CT were also similar for all groups when stratified by body mass index. There were 15 patients who had a hernia 10 cm or larger in transverse dimension. The mean body mass index of this group was 39.2, and the MSA measurements by DASH and CT were similar (P = .26). CONCLUSIONS AND RELEVANCE: DASH can be used to objectively characterize hernias by MSA, with accuracy demonstrated in the obese population and in patients whose hernias were very large (≥10 cm in diameter). DASH offers the advantages of real-time imaging and no ionizing radiation and may obviate the need for the patient to schedule additional imaging appointments.

Patient safety in the era of the 80-hour workweek.

OBJECTIVE: In 2003, duty-hour regulations (DHR) were initially implemented for residents in the United States to improve patient safety and protect resident's well-being. The effect of DHR on patient safety remains unclear. The study objective was to evaluate the effect of DHR on patient safety. DESIGN: Using an interrupted time series analysis, we analyzed selected patient safety indicators (PSIs) for 376 million discharges in teaching (T) vs nonteaching (NT) hospitals before and after implementation of DHR in 2003 that restricted resident work hours to 80 hours per week. The PSIs evaluated were postoperative pulmonary embolus or deep venous thrombosis (PEDVT), iatrogenic pneumothorax (PTx), accidental puncture or laceration, postoperative wound dehiscence (WD), postoperative hemorrhage or hematoma, and postoperative physiologic or metabolic derangement. Propensity scores were used to adjust for differences in patient comorbidities between T and NT hospitals and between discharge quarters. The primary outcomes were differences in the PSI rates before and after DHR implementation. The PSI differences between T and NT institutions were the secondary outcome. SETTING: T and NT hospitals in the United States. PARTICIPANTS: Participants were 376 million patient discharges from 1998 to 2007 in the Nationwide Inpatient Sample. RESULTS: Declining rates of PTx in both T and NT hospitals preintervention slowed only in T hospitals postintervention (p = 0.04). Increasing PEDVT rates in both T and NT hospitals increased further only in NT hospitals (p = 0.01). There were no differences in the PSI rates over time for hemorrhage or hematoma, physiologic or metabolic derangement, accidental puncture or laceration, or WD. T hospitals had higher rates than NT hospitals both preintervention and postintervention for all the PSIs except WD. CONCLUSIONS: Trends in rates for 2 of the 6 PSIs changed significantly after DHR implementation, with PTx rates worsening in T hospitals and PEDVT rates worsening in NT hospitals. Lack of consistent patterns of change suggests no measurable effect of the policy change on these PSIs.