Quality improvement in surgery: the American College of Surgeons National Surgical Quality Improvement Program approach

Racial and ethnic disparities in the surgical management of tubal ectopic pregnancy

Objective

To evaluate racial and ethnic disparities in the surgical management of ectopic pregnancy over time.

Design

Retrospective cohort study.

Setting

None.

Patients

Surgically-managed cases of patients with tubal ectopic pregnancy within the American College of Surgeons National Surgical Quality Improvement Program database between 2010 and 2019.

Interventions

None.

Main outcome measures

Surgical approach (laparoscopic compared with open) and procedure (salpingectomy compared with salpingostomy/other).

Results

Of 7791 patients undergoing surgical management of tubal ectopic pregnancy, 21.8% identified as Hispanic, 24.5% as Black, 9.4% as Asian/other, and 44.3% as White. Use of laparoscopy increased 1.3% per year from 81.4% in 2010 to 91.0% in 2019 (95% confidence interval [CI], 0.010-0.016). Odds of undergoing laparoscopic surgery were lower in Black (adjusted odds ratio [aOR] 0.52; 95% CI, 0.45-0.61) and Hispanic patients (aOR 0.52; 95% CI, 0.44-0.61) compared with White patients and remained similar over time. The use of salpingectomy increased by 1.1% per year from 80.6% in 2010 to 94.7% in 2019 (95% CI, 0.009-0.014). Odds of undergoing salpingectomy were higher among Black (aOR 1.78, 95% CI 1.43-2.23) and Hispanic patients (aOR 1.54; 95% CI, 1.24-1.93) and lower among Asian patients (aOR 0.73, 95% CI, 0.56-0.95) compared with White patients. These ratios remained similar for Black and Asian patients over time.

Conclusions

Despite the increased use of laparoscopy and salpingectomy in the surgical management of ectopic pregnancy over time, Black and Hispanic patients remain less likely to undergo minimally invasive surgery and more likely to undergo salpingectomy compared with White patients.

Is it safe to administer neoadjuvant chemotherapy to patients undergoing hepatectomy for intrahepatic cholangiocarcinoma? ACS-NSQIP propensity-matched analysis

BACKGROUND

The use of neoadjuvant chemotherapy (NAC) in patients with intrahepatic cholangiocarcinoma (iCCA) is increasing. The objective of this study was to compare the 30-day post-operative complications and length-of-stay (LOS) between patients undergoing hepatectomy for iCCA with and without NAC.

METHODS

A retrospective study was conducted using the ACS-NSQIP database queried from 2014 to 2018. Patients with NAC receipt were propensity-score matched into 1:3 ratio with controls using the greedy-matching algorithm and a caliper of 0.2. Logistic and Poisson regression models were used to estimate the effect sizes.

RESULTS

A total of 1508 patients who underwent hepatectomy for iCCA were included. 706 patients remained after matching and balance were achieved. The NAC group had 110 (60.1%) complications vs. 289 (55.3%) complications in the non-NAC group (p = 0.29). NAC was not associated with worse 30-day postoperative complications [OR 1.24, 95% CI: 0.87-1.76; p = 0.24]. Post-operative LOS in the NAC group was 8.56 days (mean, SD 7.4) vs. non-NAC group 9.27 days (mean, SD 8.41, p = 0.32). NAC was not associated with longer post-operative LOS [RR 0.93, 95% CI:0.80, 1.08; p = 0.32].

CONCLUSION

NAC may be safely administered without increasing the risk of 30-day complications or post-operative hospital LOS.

National Surgical Quality Improvement Program Adverse Events Combined With Clavien-Dindo Scores Can Direct Quality Improvement Processes in Surgical Patients

OBJECTIVE

The burden of postoperative adverse events (AE) weighs immediately on the patient as unanticipated stress and on the healthcare system as unreimbursed cost. Applying the Clavien-Dindo (C-D) system of AE gradation as a surrogate of cost, we analyzed 4 years' data from a single-state National Surgical Quality Improvement Program (NSQIP) collaboration, hypothesizing that trends of AE were consistent over time and that more frequently performed cases would be associated with less and more minor AE.

METHODS

The NSQIP defined AEs, consisting of 21 listed postoperative occurrences, which were analyzed using deidentified 30-day postoperative data for 2015 to 2018. Each AE was graded using (C-D) severity (1, lowest; 4, highest with survival). The C-D severity weight, as defined in previous multi-institutional studies, was used as a surrogate for cost and unplanned patient burden. Adverse event incidence was calculated as sum AE/case volume, and population burden as total AE burden/case volume.

RESULTS

There were 12,567 surgical cases recorded by members of the state collaborative. The overall data demonstrated no significant difference in AE incidence; however, the burden of AE increased by 18.8%. The 8 most common Current Procedural Terminology codes had approximately 50% lower AE incidence compared with overall cases; however, the incidence increased by 56.0% and the AE burden/case increased by 48.0%.

CONCLUSIONS

Although the 8 most common Current Procedural Terminology codes showed a 50% lower AE incidence compared with overall cases, the incidence increased over the study period. Surgical quality initiatives should be patient centered and focus on high burden AE.

Frailty Is Superior to Age for Predicting Readmission, Prolonged Length of Stay, and Wound Infection in Elective Otology Procedures

OBJECTIVE

To determine the predictive ability of the 5-point modified frailty index relative to age in elective otology patients.

STUDY DESIGN

Retrospective database analysis.

SETTING

Multicenter, national database of surgical patients.

PATIENTS

We selected all elective surgical patients who received tympanoplasty, tympanomastoidectomy, mastoidectomy, revision mastoidectomy, and cochlear implant procedures from 2016 to 2019 from the National Surgical Quality Improvement database.

INTERVENTIONS

Therapeutic.

MAIN OUTCOME MEASURES

Readmission rates, discharge disposition, reoperation rates, and extended length of hospital stay.

RESULTS

Utilizing receiver operating characteristics with area under the curve (AUC) analysis, nonrobust status was determined to be a superior predictor relative to age of readmission (AUC = 0.628 [p < 0.001] versus AUC = 0.567 [p = 0.047], respectively) and open wound infection relative to age (AUC = 0.636 [p = 0.024] versus AUC = 0.619 [p = 0.048], respectively). Nonrobust otology patients were more likely to have dyspnea at rest and an American Society of Anesthesiology score higher than 2 before surgery (odds ratios, 13.304 [95% confidence interval, 2.947-60.056; p < 0.001] and 7.841 [95% confidence interval, 7.064-8.704; p < 0.001], respectively).

CONCLUSION

Nonrobust status was found to be a useful predictor of readmission and prolonged length of stay in patients undergoing elective otology procedures, which generally have low complication rate. Given the aging population and corresponding increase in otology disease, it is important to use age-independent risk stratification measures. Frailty may provide a useful risk stratification tool to select surgical candidates within the aging population.

The impact of sex on outcomes following carotid endarterectomy

BACKGROUND

Previous studies have demonstrated significant sex differences in vascular surgery outcomes. We assessed stroke or death rates following carotid endarterectomy (CEA) in women vs. men.

METHODS

The Vascular Quality Initiative (VQI) was used to identify all patients who underwent CEA between 2010-2019. Demographic, clinical, and procedural characteristics were recorded and differences between women vs. men were assessed using independent t-test and chi-square test. The primary outcomes were 30-day and 1-year stroke or death. Associations between sex and outcomes were assessed using univariate/multivariate logistic regression and Cox proportional hazards analysis.

RESULTS

52,137 women and 79,974 men underwent CEA in VQI sites during the study period. Women were younger (70.3 vs. 70.5 years, p < 0.001) and more likely to have hypertension (89.2% vs. 88.9%, p < 0.05) and diabetes (36.2% vs. 35.8%, p < 0.001), but less likely to be diagnosed with coronary artery disease (23.2% vs. 31.0%, p < 0.001). A greater proportion of men were receiving cardiovascular risk reduction medications and had symptomatic carotid stenosis (28.5% vs. 26.7%, p < 0.001). Women had shorter procedure times (113 vs. 122 minutes, p < 0.001) and were less likely to receive electroencephalography neuromonitoring (27.9% vs. 28.8%, p < 0.001), drain (35.9% vs. 37.3%, p < 0.001), and protamine (67.4% vs. 68.0%, p < 0.01). Stroke or death at 30 days (1.9% vs. 1.8%, p = 0.60) and 1 year (HR 0.98 [95% CI 0.94 - 1.01], p = 0.20) were similar between groups, which persisted in asymptomatic patients (HR 0.97 [95% CI 0.93 - 1.01], p = 0.17) and symptomatic patients (HR 0.99 [95% CI 0.93 - 1.05], p = 0.71). The similarities in 1-year stroke or death rates existed in both the US (HR 0.96 [95% CI 0.92 - 1.01], p = 0.09) and Canada (HR 1.21 [95% CI 0.47 - 3.11], p = 0.70).

CONCLUSIONS

Despite sex differences in clinical and procedural characteristics, women and men have similar 30-day and 1-year outcomes following carotid endarterectomy.

Variation of ventral and incisional hernia repairs in kidney transplant recipients

INTRODUCTION

As survivorship following kidney transplant continues to improve, so does the probability of intervening on common surgical conditions, such as ventral or incisional hernia, in this population. Ventral hernia management is known to vary across institutions and this variation has an impact on patient outcomes. We sought to evaluate hospital level variation of ventral or incisional hernia repair (VIHR) in the kidney transplant population.

METHODS

We performed a retrospective review of 100% inpatient Medicare claims to identify patients who underwent kidney transplant between 2007 and 2018. The primary outcome was 1- and 3-year ventral or incisional risk- and reliability-adjusted VIHR rates. Patient and hospital characteristics were evaluated across risk- and reliability-adjusted VIHR rate tertiles. Models were adjusted for age, sex, race, and Elixhauser comorbidities.

RESULTS

Overall, 139,741 patients underwent kidney transplant during the study period with a mean age (SD) of 51.6 (13.7) years. 84,717 (60.6%) were male, and 72,657 (52.0%) were white. Median follow up time was 5.4 years. 2098 (1.50%) patients underwent VIHR. the 1 year risk- and reliability-adjusted hernia repair rates were 0.49% (95% Conf idence Interval (CI) 0.48-0.51, range 0.31-0.59) in tertile 1, 0.63% (95% CI 0.62-0.63, range 0.59-0.68) in tertile 2, and 0.98 (95% CI 0.91-1.05, range 0.68-2.94) in tertile 3. Accordingly, compared to hospitals in tertile 1, the odds of post-transplant hernia repair tertile 2 hospitals were 1.78 (95% CI 1.37-2.31) and at tertile 3 hospitals 3.53 (95% CI 2.87-4.33).

CONCLUSIONS

In a large cohort of Medicare patients undergoing kidney transplant, the overall cumulative incidence of hernia repair varied substantially across hospital tertiles. Patient and hospital characteristics varied across tertile, most notably in diabetes and obesity. Future research is needed to understand if program and surgeon level factors are contributing to the observed variation in treatment of this common disease.

Hyperamylasemia grade versus drain fluid amylase: which better predicts pancreatectomy outcomes?

BACKGROUND

The clinical importance of postoperative hyperamylasemia (POHA) grade is unknown. Our objectives were to evaluate the association of POHA grade with clinically relevant postoperative pancreatic fistula (CR-POPF) and compare its prognostic utility against postoperative day 1 drain fluid amylase (DFA-1).

METHODS

Patients who underwent pancreatectomy from January 2019 through March 2020 were identified in the ACS NSQIP pancreatectomy-targeted dataset. POHA grade was assigned using post-operative serum amylase and clinical sequelae. The primary outcome was CR-POPF within 30 days. The association of POHA grade with CR-POPF was assessed using multivariable logistic regression, and c-statistics were used to compare POHA grade versus DFA-1.

RESULTS

POHA occurred in 520 patients at 98 hospitals, including 261 (50.2%) with grade A, 234 (45.0%) with grade B, and 25 (4.8%) with grade C POHA. CR-POPFs were increased among patients with grade B (66.2%, OR 9.28 [5.84-14.73]) and C (68.0%, OR 10.50 [3.77-29.26]) versus grade A POHA (19.2%). POHA-inclusive models better predicted CR-POPF than those with DFA-1 alone (p < 0.002) and models with both predictors outperformed POHA alone (p = 0.039).

CONCLUSION

POHA grade represents a measure of post-pancreatectomy outcomes that predicts CR-POPF and outperforms DFA-1 but must be aligned with new international definitions.

Look in the Mirror, Not Out the Window

Over the past few decades, institutions have developed complex systems to compare themselves to others with the goal of improving healthcare quality. This process of comparison to others, called external benchmarking, has become the standard approach for quality improvement. However, external benchmarking is resource intensive, may not be flexible enough to focus on problems unique to individual institutions, and may lead to complacency for institutions ranking near the top of the quality bell curve for the measured metrics. Our singular focus on external benchmarking could also divert resources from other approaches. Here, we describe how the use of internal benchmarking, in which an institution focuses on improving their own processes over time, can offer unique advantages as well as offset the limitations of external benchmarking. We advocate for investment in both internal and external benchmarking as complimentary tools to improve healthcare quality.

Mini-abstract: External benchmarking, the most common approach to benchmarking today, compares outcomes across a group to improve performance. This article discusses internal benchmarking, a complementary approach with several strengths—including reduced data burden, selection of tailored metrics, motivation to improve for all performers, and incentive to look inward for solutions.

Complications and predictors of morbidity for hip fracture surgery in patients with chronic liver disease

BACKGROUND

Despite the fact that patients with chronic liver disease (CLD) are at increased risk of complications after a fracture of the hip, there remains little information about the risk factors for acute postoperative complications and their overall outcome.The aim of this study was to describe inpatient postoperative complications and identify predictors of postoperative morbidity.

METHODS

Patients with CLD who had been treated for a fracture of the hip between April 2005 and August 2019 were identified from a retrospective search of an intramural trauma registry based in the Northeastern United States. Medical records were reviewed for baseline demographics, preoperative laboratory investigations, and outcomes.

RESULTS

The trauma registry contained 110 patients with CLD who had undergone surgery for a fracture of the hip. Of these, patients with a platelet-count of ⩽100,000/µL were 3.81 (95% CI, 1.59-9.12) times more likely to receive a transfusion than those with a platelet-count of >100,000/µL. Those with a Model for End-stage Liver Disease (MELD) score of >9 were 5.54 (2.33-13.16) times more likely to receive a transfusion and 3.97 (1.06-14.81) times more likely to develop postoperative delirium than those with a MELD score of ⩽9.Of patients without chronic kidney disease, those with a creatinine of ⩾1.2 mg/dL were 6.80 (1.79-25.87) times more likely to develop acute renal failure (ARF) than those with a creatinine of <1.2 mg/dL. In a multivariable model, as MELD score was increased, the odds of developing a composite postoperative complication, which included transfusion, ARF, delirium, or deep wound infection, were 1.29 (1.01-1.66). Other tools used to assess surgical risks, Charlson Comorbidity Index, Elixhauser, and American Society of Anesthesiologist scores, were not predictive.

CONCLUSIONS

Patients with CLD who undergo surgery for a hip fracture have a high rate of postoperative complications which can be predicted by the preoperative laboratory investigations identified in this study and MELD scores, but not by other common comorbidity indices.

Incidence and Risk Factors for Complications and Mortality After Vertebroplasty or Kyphoplasty in the Osteoporotic Vertebral Compression Fracture-Analysis of 1,932 Cases From the American College of Surgeons National Surgical Quality Improvement

STUDY DESIGN

Retrospective cohort.

OBJECTIVE

The purpose was to investigate the incidence of and risk factors for complications associated with vertebroplasty (VP) or kyphoplasty (KP) for osteoporotic vertebral compression fracture (OVCF) using the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database.

METHODS

A cohort of patients undergoing VP/KP was constructed from the 2011-2013 ACS-NSQIP dataset using Current Procedural Terminology (CPT) codes. The incidences of minor complications (i.e. urinary tract infection, pneumonia, renal insufficiency, superficial infection, wound dehiscence), major complications (i.e. reoperation, deep vein thrombosis, pulmonary embolism, sepsis, dialysis, cardiac arrest, deep infection, stroke), and mortality within 30 days post-surgery were investigated, and their risk factors were assessed using logistic regression modeling.

RESULTS

Of 1932 patients undergoing VP/KP, 166 (8.6%) experienced a complication, including minor complications in 53 (2.7%), major complications in 95 (4.9%), and death in 40 (2.1%). Multivariate logistic regression analysis indicated that the adjusted odds ratios (95% confidence interval [CI]) of mortality was significantly associated with ASA 4: 16.604 (1.956-140.959) and increased creatinine (≥ 1.3 mg/dL): 3.494 (1.128-10.823). History of chronic obstructive pulmonary disease was associated with minor complications. Increased WBC count and hypoalbuminemia (<3.0 g/dL) were also associated with major complications.

CONCLUSIONS

The major complication and mortality rates associated with VP/KP were 4.9% and 2.1% respectively, higher than previous reports. Increased creatinine and ASA 4 were independently associated with mortality after VP/KP. Therefore, cautious monitoring and counseling is needed for elderly, patients with preexisting kidney disease or ASA 4 undergoing VP/KP.

Emilia-Romagna Surgical Colorectal Cancer Audit (ESCA): a value-based healthcare retro-prospective study to measure and improve the quality of surgical care in colorectal cancer

PURPOSE

Surgery is the main treatment for non-metastatic colorectal cancer. Despite huge improvements in perioperative care, colorectal surgery is still associated with a significant burden of postoperative complications and ultimately costs for healthcare organizations. Systematic clinical auditing activity has already proven to be effective in measuring and improving clinical outcomes, and for this reason, we decided to evaluate its impact in a large area of northern Italy.

METHODS

The Emilia-Romagna Surgical Colorectal Audit (ESCA) is an observational, multicentric, retro-prospective study, carried out by 7 hospitals located in the Emilia-Romagna region. All consecutive patients undergoing surgery for colorectal cancer during a 54-month study period will be enrolled. Data regarding baseline conditions, preoperative diagnostic work-up, surgery and postoperative course will be collected in a dedicated case report form. Primary outcomes regard postoperative complications and mortality. Secondary outcomes include each center's adherence to the auditing (enrolment rate) and evaluation of the systematic feedback activity on key performance indicators for the entire perioperative process.

CONCLUSION

This protocol describes the methodology of the Emilia-Romagna Surgical Colorectal Audit. The study will provide real-world clinical data essential for benchmarking and feedback activity, to positively impact outcomes and ultimately to improve the entire healthcare process of patients undergoing colorectal cancer surgery.

CLINICAL TRIAL REGISTRATION

The study ESCA is registered on the clinicaltrials.gov platform (Identifier: NCT03982641).

Perioperative Risk Stratification and Modification

This article discusses the important topic of perioperative risk stratification and the interventions that can be used in the perioperative period for risk modification. It begins with a brief overview of the commonly used scoring systems, risk-prediction models, and assessments of functional capacity and discusses some of the evidence behind each. It then moves on to examine how perioperative risk can be modified through the use of shared decision making, management of multimorbidity, and prehabilitation programs, before considering what the future of risk stratification and modification may hold.

National Assessment of Early Discharge After Video-Assisted Thoracoscopic Surgery for Lung Resection

INTRODUCTION

Video-assisted thoracoscopic surgery (VATS) techniques permit shorter postoperative length of stay (LOS). However, it remains unknown whether earlier discharge increases the risk of adverse postoperative events. We examined whether shorter LOS following elective VATS lung resection was associated with increased rates of readmission or postoperative complications.

METHODS

Patients who underwent elective thoracoscopic segmentectomy, lobectomy, or bilobectomy for lung neoplasms from 2011 to 2018 were identified in the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) dataset. Postoperative LOS was treated as an ordinal variable. The examined outcomes were 30-d readmission and 30-d postdischarge death or serious morbidity (DSM). Multivariable logistic regression models evaluated the association of LOS with outcomes. The most common readmission diagnoses were identified for each operation.

RESULTS

Among 14,418 patients, 12,410 (86.1%) underwent lobectomy, 1764 (12.2%) underwent segmentectomy, and 244 (1.7%) underwent bilobectomy. The median LOS was 3 d for patients undergoing lobectomy (IQR 2-5) and segmentectomy (IQR 2-4), and 4 d for bilobectomy (IQR 3-6). Readmission rates varied with admission time and ranged from 5.0% for patients with LOS ≤1 d to 8.5% for LOS ≥5 d. The most common readmission diagnoses were pneumothorax (19.0%) and wound complications (13.4%). Each one-day increase in LOS was associated with an increased risk of readmission (OR 1.10, 95% CI 1.04-1.17, P < 0.001). No association was seen between earlier discharge and DSM (OR 1.08, 95% CI 0.99-1.18, P = 0.070).

CONCLUSIONS

Early discharge following VATS lung resection is not associated with increased rates of readmission or postoperative complications among patients undergoing surgery for cancer, and may safely be considered for selected patients with uncomplicated postoperative recovery.

Association of preoperative smoking with complications following major gastrointestinal surgery

BACKGROUND

Understanding modifiable surgical risk factors is essential for preoperative optimization. We evaluated the association between smoking and complications following major gastrointestinal surgery.

METHODS

Patients who underwent elective colorectal, pancreatic, gastric, or hepatic procedures were identified in the 2017 ACS NSQIP dataset. The primary outcome was 30-day death or serious morbidity (DSM). Secondary outcomes included pulmonary complications, wound complications, and readmission. Multivariable logistic regression was used to evaluate the association between smoking and these outcomes.

RESULTS

A total of 46,921 patients were identified, of whom 7,671 (16.3%) were smokers. Smoking was associated with DSM (23.2% vs. 20.4%, OR 1.15 [1.08-1.23]), wound complications (13.0% vs. 10.4%, OR 1.24 [1.14-1.34]), pulmonary complications (4.9% vs 2.9%, OR 1.93 [1.70-2.20]), and unplanned readmission (12.6% vs. 11%, OR 1.14 [95% CI 1.06-1.23]).

CONCLUSIONS

Smoking is associated with complications following major gastrointestinal surgery. Patients who smoke should be counseled prior to surgery regarding risks.

Registry-based randomized clinical trials in surgery: Working with ACS-NSQIP and the AHPBA to conduct pragmatic trials

Randomized controlled trials (RCTs) represent the gold standard for evidence in clinical medicine because of their ability to account for the effects of unmeasured confounders and selection bias by indication. However, their complexity and immense costs limit their application, and thus the availability of high-quality data to guide clinical care. Registry-based RCTs are a type of pragmatic trial that leverages existing registries as a platform for data collection, providing a low-cost alternative for randomized studies. Herein, we describe the tenets of registry RCTs and the development of the first AHPBA/ACS-NSQIP-based registry trial.

External Validation of Risk Prediction Models to Improve Selection of Patients for Carotid Endarterectomy

BACKGROUND AND PURPOSE

The net benefit of carotid endarterectomy (CEA) is determined partly by the risk of procedural stroke or death. Current guidelines recommend CEA if 30-day risks are <6% for symptomatic stenosis and <3% for asymptomatic stenosis. We aimed to identify prediction models for procedural stroke or death after CEA and to externally validate these models in a large registry of patients from the United States.

METHODS

We conducted a systematic search in MEDLINE and EMBASE for prediction models of procedural outcomes after CEA. We validated these models with data from patients who underwent CEA in the American College of Surgeons National Surgical Quality Improvement Program (2011-2017). We assessed discrimination using C statistics and calibration graphically. We determined the number of patients with predicted risks that exceeded recommended thresholds of procedural risks to perform CEA.

RESULTS

After screening 788 reports, 15 studies describing 17 prediction models were included. Nine were developed in populations including both asymptomatic and symptomatic patients, 2 in symptomatic and 5 in asymptomatic populations. In the external validation cohort of 26 293 patients who underwent CEA, 702 (2.7%) developed a stroke or died within 30-days. C statistics varied between 0.52 and 0.64 using all patients, between 0.51 and 0.59 using symptomatic patients, and between 0.49 to 0.58 using asymptomatic patients. The Ontario Carotid Endarterectomy Registry model that included symptomatic status, diabetes, heart failure, and contralateral occlusion as predictors, had C statistic of 0.64 and the best concordance between predicted and observed risks. This model identified 4.5% of symptomatic and 2.1% of asymptomatic patients with procedural risks that exceeded recommended thresholds.

CONCLUSIONS

Of the 17 externally validated prediction models, the Ontario Carotid Endarterectomy Registry risk model had most reliable predictions of procedural stroke or death after CEA and can inform patients about procedural hazards and help focus CEA toward patients who would benefit most from it.

Racial and Ethnic Disparities in Obliterative Procedures for the Treatment of Vaginal Prolapse

OBJECTIVES

Although racial disparities are well documented for common gynecologic surgical procedures, few studies have assessed racial disparities in the surgical treatment of vaginal prolapse. This study aimed to compare the use of obliterative procedures for the treatment of vaginal prolapse across racial and ethnic groups.

STUDY DESIGN

This is a retrospective cohort study of surgical cases from 2010 to 2018 from the American College of Surgeons National Surgical Quality Improvement Program, a nationally validated database. Cases were identified by Current Procedural Terminology codes. Modified Poisson regression was used to calculate risk ratios and 95% confidence intervals, adjusting for potential confounders selected a priori.

RESULTS

We identified 45,865 surgical cases, of which 10% involved an obliterative procedure. In the unadjusted model, non-Hispanic Asian and non-Hispanic Black patients were more likely to undergo an obliterative procedure compared with non-Hispanic White patients (risk ratio [95% confidence interval], 2.4 [2.1-2.7] and 1.2 [1.03-1.3], respectively). These relative risks were largely unchanged when controlling for age, body mass index, diabetes, American Society of Anesthesiologists classification, and concurrent hysterectomy.

CONCLUSIONS

Although both obliterative and reconstructive procedures have their respective risks and benefits, the proportion of patients undergoing each procedure differs by race and ethnicity. It is unclear whether such disparities may be attributable to differences in preference or inequity in care.

The ACS-NSQIP surgical risk calculator is a poor predictor of postoperative complications in patients undergoing oncologic distal femoral replacement

BACKGROUND

Distal femur replacement (DFR) has become a preferred reconstruction for tumors involving the femur but is associated with known complications. The ACS-NSQIP surgical risk calculator is an online tool developed to estimate postoperative complications in the first 30-days, however, has not been used in patients undergoing DFR. The purpose of this study was determining the utility of the ACS-NSQIP calculator to predict postoperative complications.

METHODS

56 (30 male, 26 female) patients who underwent DFR were analyzed using the CPT codes: 27,365 (Under Excision Procedures on the Femur and Knee Joint), 27,447 (Arthroplasty, knee, condyle and plateau), 27,486 (Revision of total knee arthroplasty, with or without allograft), 27,487 (Revision of total knee arthroplasty, with or without allograft) and 27,488 (Repair, Revision, and/or Reconstruction Procedures on the Femur [Thigh Region] and Knee Joint). The predicted rates of complications were compared to the observed rates.

RESULTS

Complications were noted in 30 (54%) of patients. The predicted risk of complications based off the CPT codes were: 27,356 (14%); 27,447 (5%); 27,486 (7%); 27,487 (8%) and 27,488 (12%). Based on ROC curves, the use of the ACS-NSQIP score were poor predictors of complications (27356, AUC 0.54); (27447, AUC 0.45); (27486, AUC 0.45); (27487, AUC 0.46); (27488, AUC 0.46).

CONCLUSIONS

Distal femur arthroplasty performed in the setting of oncologic orthopedics is a complex procedure in a "high risk" surgical group. The ACS-NSQIP does not adequately predict the incidence of complications in these patients and cannot be reliably used in the shared decision-making process.

Implementation and Evaluation of Quality Improvement Training in Surgery: A Systematic Review

OBJECTIVE

The aim of this study was to review and appraise how quality improvement (QI) skills are taught to surgeons and surgical residents.

BACKGROUND

There is a global drive to deliver capacity in undertaking QI within surgical services. However, there are currently no specifications regarding optimal QI content or delivery.

METHODS

We reviewed QI educational intervention studies targeting surgeons or surgical trainees/residents published until 2017. Primary outcomes included teaching methods and training materials. Secondary outcomes were implementation frameworks and strategies used to deliver QI training successfully.

RESULTS

There were 20,590 hits across 10 databases, of which 11,563 were screened following de-duplication. Seventeen studies were included in the final synthesis. Variable QI techniques (eg, combined QI models, process mapping, and "lean" principles) and assessment methods were found. Delivery was more consistent, typically combining didactic teaching blended with QI project delivery. Implementation of QI training was poorly reported and appears supported by collaborative approaches (including building learning collaboratives, and coalitions). Study designs were typically pre-/post-training without controls. Studies generally lacked clarity on the underpinning framework (59%), setting description (59%), content (47%), and conclusions (47%), whereas 88% scored low on psychometrics reporting.

CONCLUSIONS

The evidence suggests that surgical QI training can focus on any well-established QI technique, provided it is done through a combination of didactic teaching and practical application. True effectiveness and extent of impact of QI training remain unclear, due to methodological weaknesses and inconsistent reporting. Conduct of larger-scale educational QI studies across multiple institutions can advance the field.

Benign Hysterectomy Operative Times and 30-day Complications: A Cohort Study

STUDY OBJECTIVE

To evaluate the 30-day complication rate among different hysterectomy routes and operative times.

DESIGN

A retrospective cohort study.

SETTING

American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database from 2011-2019.

PATIENTS

216,621 total cases including total abdominal hysterectomies (TAH), total vaginal hysterectomies (TVH), total laparoscopic-assisted vaginal hysterectomies (LAVH), and total laparoscopic hysterectomies (TLH).

INTERVENTIONS

Eligible cases included benign hysterectomies with operative times between 20 minutes and 500 minutes. We excluded cases involving disseminated cancer, emergency surgery, supracervical approaches, or concomitant procedures.

MEASUREMENTS

Multivariable logistic regression was used to evaluate the relationship between postoperative complications and operative time for each operative route. Multivariable logistic regression with a linear spline term was used to analyze differences in the association between postoperative complications and operative time below and above threshold operative times.

MAIN RESULTS

Multivariable logistic regression demonstrated a significant association between operative time and overall complication rates for all hysterectomy routes. Spline logistic regression demonstrated a significant increase in adjusted odds of a complication occurring at or above the thresholds of 100 minutes for TAH.

CONCLUSION

Patients undergoing a TAH for benign indications had a significantly increased odds of developing a complication within 30 days when operative time exceeded 100 minutes. Operative time may play a larger role in preoperative, intraoperative, and postoperative management than previously recognized for TAH in contrast to other hysterectomy routes.

Safety and Predictors of 30-Day Adverse Events of Laryngeal Framework Surgery: An Analysis of ACS-NSQIP data

OBJECTIVES/HYPOTHESIS

To characterize and identify predictors of 30-day adverse events in patients undergoing laryngeal framework surgery (LFS).

STUDY DESIGN

This study is a retrospective analysis of the National Surgical Quality Improvement dataset.

METHODS

LFS cases were identified from the American College of Surgeons-National Surgical Quality Improvement Program (ACS-NSQIP) database from 2008 to 2018. Demographic variables, patient comorbidities, and perioperative outcomes (any adverse event, 30-day readmission, 30-day reoperation, and unplanned intubation) were extracted. Patient-specific and surgery-specific factors associated with perioperative adverse events were examined using descriptive statistics and univariate logistic regression (LR).

RESULTS

Of 283 patients who underwent LFS, 225 underwent laryngoplasty medialization, 56 underwent laryngoplasty medialization with arytenoidectomy or arytenoidopexy via an external approach, and 2 underwent local myocutaneous or fasciocutaneous advancement flap along with laryngoplasty. Medical comorbidities were present in 33.6% of patients and 57.9% were American Society of Anesthesiologists (ASA) Class III/IV (57.9%). LFS was performed as same-day surgery in 30.7% of cases. Fourteen patients (4.9%) suffered an adverse condition within 30 days following surgery. In univariate LR, ASA Class III or IV (odds ratio [OR] 4.6, 95% confidence interval [CI] 1.2-30.1) was the only predictor associated with any adverse event. Arytenoid adduction (AA) was associated with increased risk of reoperation within 30 days of the initial surgery (OR 6.4, 95% CI 1.0-49).

CONCLUSIONS

LFS is a generally safe procedure with infrequent perioperative adverse events. In the ACS-NSQIP database, ASA classification of III or IV was associated with a higher risk for any 30-day adverse event and AA was associated with a higher risk for 30-day reoperation.

LEVEL OF EVIDENCE

4 Laryngoscope, 2021.

Dependent functional status rather than age is a better predictor of adverse outcomes after excision of an infected abdominal aortic graft

OBJECTIVE

The optimal management of infected abdominal aortic grafts is complete surgical excision plus in situ or extra-anatomic revascularization in patients who can tolerate this morbid operation. In addition to using age and the presence of comorbidities for risk assessment, physicians form a global clinical impression when deciding whether to offer excision or to manage conservatively. Functional status is a distinct objective measure that can inform this decision. This study examines the relative impact of age and functional status on outcomes of infected abdominal aortic graft excision to guide surgical decision-making.

METHODS

Current Procedural Terminology code 35907 was used to identify patients undergoing excision of infected abdominal aortic graft in the 2005 to 2017 American College of Surgeons - National Surgical Quality Improvement Program (NSQIP) database. Patients were stratified by the upper age quartile (75 years old) as a cutoff, and then by functional status, independent vs dependent (as defined by NSIQIP). The patients were then stratified into four groups: Younger (<75)/Independent, Younger (<75)/Dependent, Older (≥75)/Independent, and Older (≥75)/Dependent. Outcomes measured included 30-day mortality and major organ-system dysfunction.

RESULTS

There were 814 patients who underwent infected abdominal aortic graft excision: 508 patients (62%) were Younger/Independent, 89 patients (11%) were Younger/Dependent, 176 patients (22%) were Older/Independent, and 41 patients (5%) were Older/Dependent. There was no statistically significant difference in 30-day mortality for Younger/Dependent (odds ratio [OR], 1.66; 95% confidence interval [CI], 0.90-3.09; P = .536) or Older/Independent (OR, 1.31; 95% CI, 0.78-2.19; P = .311) patients when compared with Younger/Independent patients, which suggests that neither old age nor dependent functional status by itself adversely affects mortality. However, when both factors were present, Older/Dependent patients had three times higher mortality when compared with Younger/Independent patients (41.5% vs 13.4%, respectively; OR, 3.13; 95% CI, 1.46-6.71; P = .003). Furthermore, as long as patients presented with independent functional status, old age by itself did not adversely affect major organ-system dysfunction (ORs for Older/Independent vs Younger/Independent were 0.76 [P = .454], 1.04 [P = .874], and 0.90 [P = .692] for cardiac, pulmonary, and renal complications, respectively). On the contrary, even in younger patients, dependent functional status was significantly associated with higher pulmonary complications (Younger/Dependent vs Younger/Independent: OR, 2.22; 95% CI, 1.33-3.73; P = .002) and higher rates of unplanned reoperation (OR, 2.67; 95% CI, 1.62-4.41; P < .0001).

CONCLUSIONS

Dependent functional status has significant association with adverse outcomes after excision of infected abdominal aortic grafts, whereas old age alone does not. Therefore, this procedure could be considered in appropriately selected elderly patients with otherwise good functional status. However, caution should be applied in dependent patients regardless of age due to the risk of pulmonary complications.

Hybrid Anterior Cervical Discectomy and Fusion and Cervical Disc Arthroplasty: An Analysis of Short-Term Complications, Reoperations, and Readmissions

STUDY DESIGN

Retrospective cohort study.

OBJECTIVES

Although cervical disc arthroplasty (CDA) has become a well-established and effective treatment for symptomatic cervical degeneration, many patients with multilevel disease are not good candidates for CDA at all levels. For such patients, hybrid surgery (HS)-a combination of adjacent anterior cervical discectomy and fusion (ACDF) and CDA-may be more appropriate. Given the novelty of HS and the relative dearth of studies adequately assessing short-term perioperative complications, this current study sought to assess the short-term morbidity profile of HS, differences in operative duration, length of stay (LOS), and readmission and reoperation rates and reasons relative to a 2-level ACDF cohort.

METHODS

All patients who underwent HS and 2-level ACDF were identified between 2011 and 2018 using a large, prospectively collected registry. Baseline patient characteristics and postoperative complications were compared using bivariate and/or multivariate analysis.

RESULTS

A total of 390 patients undergoing HS were identified. Two-level procedures were the most common (74.9%). Patients undergoing HS were more likely to be younger, male, and have fewer comorbidities. There were no differences between HS and 2-level ACDF in rates of any postoperative complication, transfusion, readmissions, and operative duration. However, HS had a decreased LOS (0.5 days), relative to a 2-level ACDF. HS patients had low rates of reoperation (1.28%) with 1 case for hematoma evacuation and another for revision CDA.

CONCLUSIONS

This study represents one of the largest cohorts of patients undergoing HS reported to date. Patients undergoing HS are not at increased risk of perioperative complications relative to a 2-level ACDF and may benefit from shorter LOS.

Racial and ethnic differences in reconstructive surgery for apical vaginal prolapse

BACKGROUND

There is limited literature identifying racial and ethnic health disparities among surgical modalities and outcomes in the field of urogynecology and specifically pelvic organ prolapse surgery.

OBJECTIVE

This study aimed to evaluate the differences in surgical approach for apical vaginal prolapse and postoperative complications by race and ethnicity.

STUDY DESIGN

This is a retrospective cohort study of women undergoing surgical repair for apical vaginal prolapse between 2014 and 2017 using data from the American College of Surgeons National Surgical Quality Improvement Program. Patients were eligible for inclusion if they underwent either vaginal colpopexy or abdominal sacrocolpopexy. Abdominal sacrocolpopexy cases were further divided into those performed by laparotomy and those performed by laparoscopy. Multivariable logistic regression models that controlled for age, comorbidities, American Society of Anesthesiologists physical status classification, and concurrent surgery were used to determine whether race and ethnicity are associated with the type of colpopexy (vaginal vs abdominal) or the surgical route of abdominal sacrocolpopexy. Similar models that also controlled for surgical approach were used to assess 30-day complications by race and ethnicity.

RESULTS

A total of 22,861 eligible surgical cases were identified, of which 12,337 (54%) were vaginal colpopexy and 10,524 (46%) were abdominal sacrocolpopexy. Among patients who had an abdominal sacrocolpopexy, 2262 (21%) were performed via laparotomy and 8262 (79%) via laparoscopy. The study population was 70% White, 9% Latina, 6% African American, 3% Asian, 0.6% Native Hawaiian or Pacific Islander, 0.4% American Indian or Alaska Native, and 11% unknown. In multivariable analysis, Asian and Native Hawaiian or Pacific Islander women were less likely to undergo abdominal sacrocolpopexy compared with White women (odds ratio, 0.82; 95% confidence interval, 0.68-0.99, and odds ratio, 0.56; 95% confidence interval, 0.39-0.82, respectively). Among women who underwent an abdominal sacrocolpopexy, Latina women and Native Hawaiian or Pacific Islander women were less likely to undergo a laparoscopic approach compared with White women (odds ratio, 0.68; 95% confidence interval, 0.58-0.79, and odds ratio, 0.31; 95% confidence interval, 0.1-0.56, respectively). Complication rates also differed by race and ethnicity. After a colpopexy, African American women were more likely to need a blood transfusion (odds ratio, 3.04; 95% confidence interval, 1.95-4.73; P≤.001) and have a deep vein thrombosis or pulmonary embolus (odds ratio, 2.46; 95% confidence interval, 1.10-5.48; P=.028), but less likely to present with postoperative urinary tract infections (odds ratio, 0.68; 95% confidence interval, 0.49-0.96; P=.028) than White women in multivariable regression models. Using the Clavien-Dindo classification system, Latina women had higher odds of developing grade II complications than White women in multivariable models (odds ratio, 1.25; 95% confidence interval, 1.04-1.51; P=.02).

CONCLUSION

There are racial and ethnic differences in the type and route of surgical repair for apical vaginal prolapse. In particular, Latina and Pacific Islander women were less likely to undergo a laparoscopic approach to abdominal sacrocolpopexy compared with White women. Although complications were uncommon, there were several complications including blood transfusions that were higher among African American and Latina women. Additional studies are needed to better understand and describe associated factors for these differences in care and surgical outcomes.

Quality Indicators in Surgical Palliative Care: A Systematic Review

CONTEXT

Defining high quality palliative care in seriously ill surgical patients is essential to provide patient-centered surgical care. Quality indicators specifically for seriously ill surgical patients are necessary in order to integrate palliative care into existing surgical quality improvement programs.

OBJECTIVES

To identify existing quality indicators that measure palliative care delivery in seriously ill surgical patients, characterize their development, and assess their methodological quality.

METHODS

A PRISMA-guided systematic review included studies that reported on the development process and characteristics of palliative care quality indicators and guidelines in adult surgical patients. Relevant measures were categorized into the previously defined National Consensus Project domains of palliative care and the Donabedian quality framework, and assessed for methodological quality.

RESULTS

There were 263 unique measures identified from 26 studies, of which 70% were process measures. Indicators addressing Care of the Patient Near the End of Life (31.5%) and Physical Aspects of Care (20.8%) were the most common. Indicators addressing Spiritual (2.6%) and Cultural Aspects of Care (1.2%) were the least common. Methodological quality varied widely across studies. Although most studies defined a purpose for the indicators and used scientific evidence, many studies lacked input from target populations and few had discussed the practical application of indicators.

CONCLUSION

This review was a key step that informed efforts to develop quality indicators for seriously ill surgical patients. Few indicators addressed non-physical aspects of suffering and no indicators were identified addressing palliative surgery. Future attention is needed toward the development and practical application of palliative care quality indicators in surgical patients.

Improving Surgical Quality for Patients with Mental Health Illnesses: A Narrative Review

OBJECTIVE

To establish and define disparities in care for patients presenting with surgical disease who have pre-existing mental health diagnoses.

SUMMARY BACKGROUND DATA

Mental illness affects approximately 6.7 million Canadians. For them, stigma, comorbid disorders, and sequelae of psychiatric diagnoses can be barriers patients face to receive equitable healthcare. The goal of this review is to define inequities in surgical care for patients with pre-existing mental illness.

METHODS

We search OVID Medline, Pubmed, EMBASE, and the Cochrane review files using a combination of search terms using a PICO (population, intervention, comparison, outcome) model focusing on surgical care for patients with mental illness.

RESULTS

The literature on mental illness in surgical patients focused primarily on preoperative and postoperative disparities in surgical care between patients with and without a diagnosis of mental illness. Preoperatively, patients were 7.5-40% less likely to be deemed surgical candidates, were less likely to receive testing, and were more likely to present at later stages of their disease or have delayed surgical care. Similar themes arose in the postoperative period: patients with mental illness were more likely to require ICU admission, were up to 3 times more likely to have a prolonged length of hospital stay, had a 14-270% increased likelihood of having postoperative complications, and had significantly higher healthcare costs.

CONCLUSIONS

Surgical patients with preexisting psychiatric diagnoses have a propensity for worse perioperative outcomes compared to patients without reported mental illness. Taking a thorough psychiatric history can potentially help surgical teams address disparities and access to care as well as anticipate and prevent adverse outcomes.

Is supplemental regional anesthesia associated with more complications and readmissions after ankle fracture surgery in the inpatient and outpatient setting?

BACKGROUND

There is concern that regional anesthesia is associated with increased risk of complications, including return to the hospital for uncontrolled pain once the regional anesthetic wears off.

METHODS

Retrospective database review of patients who underwent open reduction and internal fixation of a closed ankle fracture from 2014-16 who received general anesthesia alone (GA) or general anesthesia plus regional anesthesia (RA).

RESULTS

9459 patients met inclusion criteria. Patients in the RA group had significantly longer operative duration in both inpatient (GAI=71min vs RAI=79min, p=0.002) and outpatient setting (GAO=66min vs RAI=72min, p<0.001), lower overall LOS (GA=1.7 days vs RA=1.1 days, p<0.001), and higher readmission rate for pain (RAO=4 [0.3%] vs GAO=1 [0.0%], p=0.007).

CONCLUSIONS

Patients who received supplemental regional anesthesia had shorter hospital LOS, increased operative time, and increased readmission rates for rebound pain. However, the small number of patients needing readmission are not clinically significant demonstrating that regional anesthesia is safe, effective and readmission for rebound pain should not be a concern.

LEVEL OF EVIDENCE

III.

Utility of the ACS-NSQIP surgical risk calculator in predicting postoperative complications in patients undergoing oncologic proximal femoral replacement

INTRODUCTION

Proximal femur replacement (PFR) in the setting of tumor resection is associated with a high rate of postoperative complication. The online American College of Surgeons-National Surgical Quality Improvement Program (ACS-NSQIP) surgical risk calculator is approved by the Center of Medicare and Medicaid services to estimate 30-day postoperative complications. This study was to determine if the ACS-NSQIP can predict postoperative complications following PFR.

METHODS

We reviewed 103 (61 male and 42 female) patients undergoing PFR using the Current Procedural Terminology (CPT) codes available in the calculator: 27125 (hemiarthroplasty), 27130 (total hip), 27132 (conversion to total hip), 27134 (revision total hip), 27137 (revision acetabulum), 27138 (revision femur), and 27365 (excision tumor hip). The predicted rates of complications were compared with the observed rates.

RESULTS

Complications occurred in 54 (52%) of patients, with the predicted risk based on CPT codes: 27125 (21.5%); 27130 (7.8%); 27132 (16.6%), 27134 (17.8%), 27137 (14.4%), 274138 (22.7%), and 27365 (16.2%). The calculator was a poor predictor of complications (27125, area under the curve [AUC] 0.576); (27130, AUC 0.489); (27132, AUC 0.490); (27134, AUC 00.489); (27137, AUC 0.489); (27138, AUC 0.471); and (27365, AUC 0.538).

CONCLUSION

Oncologic PFR is known for complications. The ACS-NSQIP does not adequately predict the incidence of complications, and therefore cannot reliably be used in their shared decision-making process preoperative.

Male sex, ostomy, infection, and intravenous fluids are associated with increased risk of postoperative ileus in elective colorectal surgery

BACKGROUND

Postoperative ileus is a common and costly complication after elective colorectal surgery. Effects of intravenous fluid administration remain controversial, and the effect of ostomy construction has not been fully evaluated. Various restrictive intravenous fluid protocols may adversely affect renal function. We aimed to investigate the impact of intestinal reconstruction and intravenous fluid on ileus and renal function after colorectal resection under an enhanced recovery protocol.

METHODS

A retrospective study of a prospectively maintained institutional database for a tertiary academic medical center following National Surgical Quality Improvement Program standards was reviewed, analyzing elective colorectal resections performed under enhanced recovery protocol from 2015 to 2018. Postoperative ileus was defined as nasogastric decompression, nil per os >3 days postoperatively, or nasogastric tube insertion. Patients with and without ileus were compared. Intravenous fluid and different anastomoses and ostomies were investigated. Acute kidney injury was a secondary outcome, due to the potential of renal damage with restriction of intravenous fluid volume during and after surgery and controversy in current literature in this matter.

RESULTS

Postoperative ileus occurred in 18.5% of patients (n = 464). Male sex (odds ratio 1.97, 95% confidence interval 1.12-3.52) and postoperative infection (odds ratio 2.13, 95% confidence interval 1.03-4.35) were associated with ileus. Compared to colorectal anastomosis, ileostomy/ileorectal anastomosis had the highest risk of ileus (odds ratio 4.9, 95% confidence interval 2.33-11.3), colostomy second highest (odds ratio 3.3, 95% confidence interval 1.35-8.39), while ileocolic anastomosis did not significantly differ (odds ratio 2.06, 95% confidence interval 0.69-5.85) on multivariate analysis. Each liter of intravenous fluid within the first 72 hours significantly correlated with postoperative ileus (odds ratio 1.41, 95% confidence interval 1.27-1.59). Rates of acute kidney injury did not differ (P = .18).

CONCLUSION

Each additional liter of intravenous fluid given in the first 72 hours increased the risk of postoperative ileus 1.4-fold. There is substantially higher risk of ileus with male sex, infection, ileostomy/ileorectal anastomosis, and colostomy. Judicious use of intravenous fluid, as described in our enhanced recovery protocol, is not detrimental for renal function in the setting of normal baseline.

Perioperative cardiovascular outcomes among older adults undergoing in-hospital noncardiac surgery

BACKGROUND

Older adults undergoing noncardiac surgery have a high risk of major adverse cardiovascular events (MACE). This study aims to estimate the magnitude of increased perioperative risk, and examine national trends in perioperative MACE following in-hospital noncardiac surgery in older adults compared to middle-aged adults.

DESIGN

Time-series analysis of retrospective longitudinal data.

SETTING

The United States Agency for Healthcare Research and Quality National Inpatient Sample (NIS).

PARTICIPANTS

Hospitalizations for major noncardiac surgery among adults age ≥45 years between January 2004 and December 2014.

MEASUREMENTS

Inpatient perioperative MACE was defined as a composite of in-hospital death, myocardial infarction (MI), and ischemic stroke. In hospital death was determined from the NIS discharge disposition. MI and ischemic stroke were defined by International Classification of Diseases, Ninth Revision codes.

RESULTS

Of an estimated 55,349,978 surgical hospitalizations, 26,423,039 (47.7%) were for adults age 45-64, 14,231,386 (25.7%) age 65-74, 10,621,029 (19.2%) age 75-84 years, and 4,074,523 (7.4%) age ≥85 years. MACE occurred in 1,601,022 surgical hospitalizations (2.9%). Adults 65-74 (2.8%; aOR 1.16, 95% CI 1.14-1.17), 75-84 years (4.5%; aOR 1.30, 95% CI 1.28-1.32), and ≥85 years (6.9%; aOR 1.55, 95% CI 1.52-1.57) had greater risk of MACE than those 45-64 years (1.7%). From 2004 to 2014, MACE declined among adults 65-74 (3.1-2.5%, p < 0.001), 75-85 years (4.9-3.9%, p < 0.001), and ≥85 years (7.7-6.1%, p < 0.001), but was unchanged for adults age 45-64. Declines in MACE were driven by decreased MI and mortality despite increased stroke.

CONCLUSION

Older adults accounted for half of hospitalizations, but experienced the majority of MACE. Older adults had greater adjusted odds of MACE than younger individuals. The proportion of perioperative MACE declined over time, despite increases in ischemic stroke. These data highlight risks of noncardiac surgery in older adults that warrant increased attention to improve perioperative outcomes.

Challenges of Modeling Outcomes for Surgical Infections: A Word of Caution

Background: We developed a novel analytic tool for colorectal deep organ/space surgical site infections (C-OSI) prediction utilizing both institutional and extra-institutional American College of Surgeons-National Surgical Quality Improvement Program (ACS-NSQIP) data. Methods: Elective colorectal resections (2006-2014) were included. The primary end point was C-OSI rate. A Bayesian-Probit regression model with multiple imputation (BPMI) via Dirichlet process handled missing data. The baseline model for comparison was a multivariable logistic regression model (generalized linear model; GLM) with indicator parameters for missing data and stepwise variable selection. Out-of-sample performance was evaluated with receiver operating characteristic (ROC) analysis of 10-fold cross-validated samples. Results: Among 2,376 resections, C-OSI rate was 4.6% (n = 108). The BPMI model identified (n = 57; 56% sensitivity) of these patients, when set at a threshold leading to 80% specificity (approximately a 20% false alarm rate). The BPMI model produced an area under the curve (AUC) = 0.78 via 10-fold cross- validation demonstrating high predictive accuracy. In contrast, the traditional GLM approach produced an AUC = 0.71 and a corresponding sensitivity of 0.47 at 80% specificity, both of which were statstically significant differences. In addition, when the model was built utilizing extra-institutional data via inclusion of all (non-Mayo Clinic) patients in ACS-NSQIP, C-OSI prediction was less accurate with AUC = 0.74 and sensitivity of 0.47 (i.e., a 19% relative performance decrease) when applied to patients at our institution. Conclusions: Although the statistical methodology associated with the BPMI model provides advantages over conventional handling of missing data, the tool should be built with data specific to the individual institution to optimize performance.

Postoperative Admission, Readmission, and Complications for Patients 60 Years and Older Who Are Undergoing an Isolated Sling Procedure for Stress Incontinence: A Database Study

OBJECTIVE

The aim of the study was to determine the effect of increasing age on postoperative admission, readmission, and complications for patients 60 years and older who underwent a synthetic or autologous sling procedure for stress incontinence.

METHODS

A retrospective cohort study of surgical cases from 2012 to 2017 from the American College of Surgeons National Surgical Quality Improvement Program database was conducted. Eligible patients were at least 60 years old and underwent an isolated sling procedure for stress incontinence identified by Current Procedural Terminology code 57288. Baseline demographics, preoperative comorbidities, and postoperative complications were obtained. Risk ratios (RRs) and 95% confidence intervals were calculated using log-binomial regressions.

RESULTS

Of 3,960 eligible patients, 634 (16.0%) were admitted postoperatively. Admission rates differed across age groups (P = 0.04). For example, compared with patients aged 60-64 years, those aged 70-74 years had 1.3 times the risk of admission (95% confidence interval, 1.04-1.6). Other risk factors for admission included diabetes (RR, 1.3) and hypertension (RR, 1.2). Patients who had general anesthesia had 6.3 times the risk of admission compared with those who had monitored anesthesia/intravenous sedation. There were 72 patients (1.8%) readmitted within 30 days. There was no association between age and readmission. Risk factors for readmission included diabetes (RR, 1.8), bleeding disorders (RR, 3.4), severe chronic obstructive pulmonary disease (RR, 3.7), and congestive heart failure (RR, 11.3). There were 192 complications (4.8%), including 45 major complications (1.1%).

CONCLUSIONS

Among patients 60 years and older, the risk of postoperative admission and readmission for patients undergoing a synthetic or autologous sling procedure is low and complications are uncommon.

Risks and Complications After Arthroplasty for Pathological or Impending Pathological Fracture of the Hip

BACKGROUND

Treatment options for metastatic osseous lesions of the proximal femur include hemiarthroplasty (HA) or total hip arthroplasty (THA) depending on lesion characteristics and patient demographics. Studies assessing short-term outcomes after HA/THA in this patient population are limited. Therefore, the purpose of this present study was to identify short-term rates of morbidity and mortality after HA/THA for pathological proximal femur fractures, as well as readmission and reoperation rates and reasons.

METHODS

This study utilized a large, prospectively collected registry to identify patients who underwent HA/THA between 2011 and 2018. Patients were stratified by indication for surgery, including pathological fracture, nonpathological fracture, and osteoarthritis. Baseline patient characteristics and postoperative complications were compared using bivariate and/or multivariate analysis.

RESULTS

In total, 883 patients undergoing HA/THA for a pathological fracture were identified. Relative to an osteoarthritis cohort, these patients tended to be older, had a lower body mass index, and had significantly more preoperative comorbidities. These patients had high rates of total complications (13.93%), including thirty-day mortality (3.29%), unplanned return to the operating room (4.98%), and pulmonary complications (3.85%). Patients with pathological fracture had a longer operative duration relative to osteoarthritis and nonpathological cohorts (+27 and +25 minutes, respectively), despite having high rates of HAs performed.

CONCLUSION

Patients undergoing hip arthroplasty for pathologic proximal femur fracture have increased morbidity and mortality relative to an osteoarthritis cohort. However, patients with a pathological fracture have similar rates of morbidity and mortality when compared with a nonpathological fracture cohort, but did experience higher rates of perioperative blood transfusion and unplanned readmissions.

LEVEL OF EVIDENCE

III.

A Review of Bowel Preparation Before Colorectal Surgery

Infectious complications are the biggest problem during bowel surgery, and one of the approaches to minimize them is the bowel cleaning method. It was expected that bowel cleaning could facilitate bowel manipulation as well as prevent infectious complications and further reduce anastomotic leakage. In the past, with the development of antibiotics, bowel cleaning and oral antibiotics (OA) were used together. However, with the success of emergency surgery and Enhanced Recovery After Surgery, bowel cleaning was not routinely performed. Consequently, bowel cleaning using OA was gradually no longer used. Recently, there have been reports that only bowel cleaning is not helpful in reducing infectious complications such as surgical site infection (SSI) compared to OA and bowel cleaning. Accordingly, in order to reduce SSI, guidelines are changing the trend of only intestinal cleaning. However, a consistent regimen has not yet been established, and there is still controversy depending on the location of the lesion and the surgical method. Moreover, complications such as Clostridium difficile infection have not been clearly analyzed. In the present review, we considered the overall bowel preparation trends and identified the areas that require further research.

Thirty-Day Outcomes following Upper Extremity Flap Reconstruction

Introduction  Flap reconstructions of upper extremity defects are challenging procedures. It is important to understand the surgical outcomes of upper extremity flap reconstruction, as well as associations between preoperative/perioperative variables and complications. Materials and Methods  The National Surgical Quality Improvement Program (NSQIP) database was queried for patients from 2005 to 2016 who underwent flap reconstruction of an upper extremity defect. Patient and perioperative variables were collected for identified patients and assessed for associations with rates of any complication and major complications. Results  On multivariate analysis, American Society of Anesthesiologists (ASA) classification >2, bleeding disorder, preoperative steroid use, free flap reconstruction, wound classification other than clean, and nonplastic surgeon specialty were independently associated with any complications. Bleeding disorder, ASA classification >2, male gender, wound classification other than clean, and preoperative anemia were independently associated with major complications. Free flap reconstruction was associated with increased length of stay, operative time, any complications, transfusions, and unplanned reoperations. Conclusion  There is an association between complications in patients undergoing upper extremity free flap reconstruction and ASA classification >2, preoperative anemia, preoperative steroid use, bleeding disorders, and contaminated wounds. Male patients may require more thorough counseling in activity restriction following reconstruction. Free flaps for upper extremity reconstruction will require increased planning to reduce the chance of complications.

Variation in Drain Management Among Patients Undergoing Major Hepatectomy

BACKGROUND

Although previous studies have suggested that drain management is highly variable, data on drain placement and timing of drain removal among patients undergoing hepatic resection remain scarce. The objective of the current study was to define the utilization of drain placement among patients undergoing major hepatic resection.

METHODS

The ACS NSQIP-targeted hepatectomy database was used to identify patients who underwent major hepatectomy between 2014 and 2017. Association between day of drain removal, timing of discharge, and drain fluid bilirubin on postoperative day (POD) 3 (DFB-3) was assessed. Propensity score matching (PSM) was used to compare outcomes of patients with a drain removed before and after POD 3.

RESULTS

Among 5330 patients, most patients had an abdominal drain placed at the time of hepatic resection (n = 3075, 57.7%). Of 2495 patients with data on timing of drain removal, only 380 patients (15.2%) had their drain removed by POD 3. Almost 1 in 6 patients (n = 441, 17.7%) were discharged home with the drain in place. DFB-3 values correlated poorly with POD of drain removal (R² = 0.0049). After PSM, early drain removal (≤ POD 3) was associated with lower rates of grade B or C bile leakage (2.1% vs. 7.1%, p = 0.008) and prolonged length of hospital stay (6.0% vs. 12.7%, p = 0.009) compared with delayed drain removal (> POD 3).

CONCLUSIONS

Roughly 3 in 5 patients had a drain placed at the time of major hepatectomy and only 1 in 7 patients had the drain removed early. This study demonstrated the potential benefits of early drain removal in an effort to improve the quality of care following major hepatectomy.

The extent of colorectal resection and short-term outcomes in patients with ulcerative colitis

OBJECTIVE

There is limited literature on the impact of the extent of resection on short-term outcomes in patients with ulcerative colitis (UC) in an elective setting. The aim of this study was to better understand the impact of approach and extent of resection on short-term outcomes for patients undergoing total proctocolectomy (TPC) and subtotal colectomy (STC) for UC.

METHODS

Patients with UC who underwent elective TPC or STC were captured from the ACS-NSQIP® 2011-2018 database and divided into four cohorts: Open TPC (O-TPC), Laparoscopic TPC (L-STC), Open STC (O-STC), and Laparoscopic STC (L-STC). Baseline and perioperative variables were compared between the four groups alongside 30-day mortality and 30-day complication rates.

RESULTS

Of 3387 patients, 368 (10.9%) underwent O-STC, 406 (12%) underwent O-TPC, 1958 (58%) underwent L-STC, and 655 (19%) underwent L-TPC. Overall rate of prolonged length of stay (LOS) was 27% and 9% needed a blood transfusion. There was no difference in the risk of complications between open TPC and open STC. Those who had open surgery had a higher risk of complications and prolonged LOS. Patients who had L-TPC had prolonged LOS compared to patients who had L-STC, but less compared to those who had O-STC.

CONCLUSION

Elective surgery for UC is associated with high rates of prolonged LOS and blood transfusion despite MIS approaches. Short-term outcomes and LOS are more impacted by the operative approach than the extent of resection. Despite this laparoscopic TPC has higher rates of prolonged LOS when compared to laparoscopic STC.

Complication rates and resource utilization after total hip and knee arthroplasty stratified by body mass index

Over 295,000 patients from 2016 to 2018 in a national database were grouped into normal weight (BMI 18.5 to <25 kg/m²), overweight (25 to <30), type-1 obese (30 to <35), type-2 obese (35 to <40), and type-3 obese (40 or higher). Differences in resource utilization and complication rates across BMI categories were compared. In comparison to normal weight patients, overweight and obese patients undergoing TJA were at risk for increased resource utilization and various early complications. Patients undergoing TKA with a BMI up to 45 kg/m² are at similar risk for 30-day postoperative complications when compared to type-1 obese patients.

Estimates of the effects of centralization policy for surgery in Japan: does centralization affect the quality of healthcare for esophagectomies?

PURPOSE

This study compared the quality of healthcare before and after implementation of a policy restructuring the healthcare delivery system and estimated the impact of centralization.

METHODS

We used the National Clinical Database to study patients undergoing esophagectomies from 2011 to 2016. We compared the effect of centralization based on the patient background, surgical mortality, and year of surgery. Difference-in-difference methods based on the generalized estimating equation logistic regression model were used for before-and-after comparisons after adjusting for patient-level expected surgical mortality.

RESULTS

In total, 34,640 cases were identified. More cases with risk factors were noted in ultra-low-volume hospitals, where 38.4% of cases in underpopulated areas were treated, than in higher volume facilities, and the operative mortality, readmission within 30 days and length of stay were worse among patients treated in these hospitals. In centralized prefectures, the number of cases per hospital increased over time (7.2 in 2011 to 9.5 in 2016) while the crude operative mortality tended to decrease (3.4% in 2011 to 1.8% in 2016). The difference-in-difference estimator was 0.856 (95% confidence interval: 0.639-1.147, p = 0.298).

CONCLUSION

The centralization of ultra-low-volume hospitals did not lead to a deterioration in the quality of care but rather an improving trend.

Operative Duration and Short-Term Postoperative Complications after Unicompartmental Knee Arthroplasty

BACKGROUND

Prolonged operative duration is an independent risk factor for postoperative complications in many orthopedic procedures ranging from shoulder arthroscopy to total hip and knee arthroplasties. It has not been well studied in unicompartmental knee arthroplasty (UKA). The purpose of this study is to assess the effect of operative duration on complications after UKA.

METHODS

Using the American College of Surgeons National Surgical Quality Improvement Program registry, we identified all primary unilateral UKAs from 2005 to 18. Patients were divided into three cohorts based on the operative duration: < 90 minutes, between 90 and 120 minutes, and >120 minutes. Baseline patient and operative demographics (age, gender, etc.) and thirty-day complications were compared using bivariate analysis. Multivariate analysis was used to assess the independent effect of operative duration on postoperative outcomes after adjusting for differences in baseline characteristics.

RESULTS

We identified 11,806 patients who underwent primary UKA from 2005 to 18. There was no difference in the "any complication" rate between cohorts. However, operative duration >120 minutes was associated with a significantly higher likelihood of reoperation (odds ratio [OR] 2.02, 95% confidence interval [CI]: 1.15-3.57, P = .015), non-home discharge (OR: 2.14, CI: 1.65-2.77, P < .001), surgical site infection (OR: 1.76, CI: 1.03-3.01, P = .038), and blood transfusions (OR: 3.23, CI: 1.44-7.22, P = .004) when compared with operative duration <90 minutes. There was no difference in mortality rates.

CONCLUSION

Increased operative duration greater than 2 hours in primary UKA is associated with an increased risk of non-home discharge, surgical site infection, reoperation, and blood transfusion.

Comparison of Outcomes Between the National Surgical Quality Improvement Program and an Emergency General Surgery Registry

BACKGROUND

The National Surgical Quality Improvement Program (NSQIP) has become a prevalent tool for quality improvement. At our tertiary military hospital, NSQIP collects 20% of eligible cases. We implemented an emergency general surgery (EGS) registry to prospectively review all EGS cases. We compared our EGS registry with NSQIP, hypothesizing that NSQIP sampling under-represents EGS outcomes.

METHODS

A formal EGS Process Improvement Program was implemented in 2016. From 2016 to 2018, the four most common operations were laparoscopic appendectomy, laparoscopic cholecystectomy, surgery for small bowel obstruction, and nonelective hernia repair. Outcomes were compared between the EGS registry and NSQIP abstracted cases.

RESULTS

In 2016, the EGS registry identified 11/112 (9.8%) patients with a complication. National Surgical Quality Improvement Program abstracted 16% of EGS cases with 16.7% (3/18) of patients having a complication. In 2017, the EGS registry identified 10/87 (11.5%) cases with complications. National Surgical Quality Improvement Program abstracted 23% of EGS with zero complications. In 2018, the EGS registry identified 9.5% of 74 cases with complications. National Surgical Quality Improvement Program abstracted 15% of EGS cases with zero complications.

CONCLUSIONS

National Surgical Quality Improvement Program did not capture many important EGS outcomes. In 2 of 3 years, NSQIP did not identify a single complication for EGS. National Surgical Quality Improvement Program alone may be insufficient to target EGS improvements.

The American College of Surgeons National Quality Improvement Program Incompletely Captures Implant-Based Breast Reconstruction Complications

BACKGROUND

Implant-based breast reconstruction (IBR) accounts for 70% of postmastectomy reconstructions in the United States. Improving the quality of surgical care in IBR patients through accurate measurements of outcomes is necessary. The purpose of this study is to compare the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) data from our institution to our complete institutional health records database.

METHODS

Data were collected and recorded for all patients undergoing IBR at our institution from 2015 to 2017. The data were completely identified and compared with our institutional NSQIP database for demographics and complications.

RESULTS

The electronic health records data search identified 768 IBR patients in 3 years and NSQIP reported on 229 (30%) patients. Demographics were reported similarly among the 2 databases. Rates of tissue expander/implant infections (5.9% vs 1.8%; P = 0.003) and wound dehiscence (3.5% vs 0.4%; P = 0.003) were not reported similarly between our database and NSQIP. However, the rates of hematoma (2.7% vs 1.8%) and skin flap necrosis (2.5% vs 1.8%) were comparable between the two databases. In our database, 43% of all complications presented after 30 days of surgery, beyond NSQIP's capture period.

CONCLUSIONS

Databases built on partial sampling, such as the NSQIP, may be useful for demographic analyses, but fall short of providing data for complications after IBR, such as infections and wound dehiscence. These results highlight the utility and importance of complete databases. National comparisons of clinical outcomes for IBR should be interpreted with caution when using partial databases.

Collaborative Review: Factors Influencing Treatment Decisions for Patients with a Localized Solid Renal Mass

CONTEXT

With the addition of active surveillance and thermal ablation (TA) to the urologist's established repertoire of partial (PN) and radical nephrectomy (RN) as first-line management options for localized renal cell carcinoma (RCC), appropriate treatment decision-making has become increasingly nuanced.

OBJECTIVE

To critically review the treatment options for localized, nonrecurrent RCC; to highlight the patient, renal function, tumor, and provider factors that influence treatment decisions; and to provide a framework to conceptualize that decision-making process.

EVIDENCE ACQUISITION

A collaborative critical review of the medical literature was conducted.

EVIDENCE SYNTHESIS

We identify three key decision points when managing localized RCC: (1) decision for surveillance versus treatment, (2) decision regarding treatment modality (TA, PN, or RN), and (3) decision on surgical approach (open vs minimally invasive). In evaluating factors that influence these treatment decisions, we elaborate on patient, renal function, tumor, and provider factors that either directly or indirectly impact each decision point. As current nomograms, based on preselected patient datasets, perform poorly in prospective settings, these tools should be used with caution. Patient decision aids are an underutilized tool in decision-making.

CONCLUSIONS

Localized RCC requires highly nuanced treatment decision-making, balancing patient- and tumor-specific clinical variables against indirect structural influences to provide optimal patient care.

PATIENT SUMMARY

With expanding treatment options for localized kidney cancer, treatment decision is highly nuanced and requires shared decision-making. Patient decision aids may be helpful in the treatment discussion.

Comparison of machine learning techniques to predict unplanned readmission following total shoulder arthroplasty

BACKGROUND

Machine learning (ML) techniques have been shown to successfully predict postoperative complications for high-volume orthopedic procedures such as hip and knee arthroplasty and to stratify patients for risk-adjusted bundled payments. The latter has not been done for more heterogeneous, lower-volume procedures such as total shoulder arthroplasty (TSA) with equally limited discussion around strategies to optimize the predictive ability of ML algorithms. The purpose of this study was to (1) assess which of 5 ML algorithms best predicts 30-day readmission, (2) test select ML strategies to optimize the algorithms, and (3) report on which patient variables contribute most to risk prediction in TSA across algorithms.

METHODS

We identified 9043 patients in the American College of Surgeons National Surgical Quality Improvement Database who underwent primary TSA between 2011 and 2015. Predictors included demographics, comorbidities, laboratory data, and intraoperative variables. The outcome of interest was 30-day unplanned readmission. Five ML algorithms-support-vector machine (SVM), logistic regression, random forest (RF), an adaptive boosting algorithm, and neural network-were trained on the derivation cohort (2011-2014 TSA patients) to predict 30-day unplanned readmission rates. After training, weights for each respective model were fixed and the classifiers were evaluated on the 2015 TSA cohort to simulate a prospective evaluation. C-statistic and f1 scores were used to assess the performance of each classifier. After evaluation, features were removed independently to assess which features most affected classifier performance.

RESULTS

The derivation and validation cohorts comprised 5857 and 3186 primary TSA patients, respectively, with similar demographics, comorbidities, and 30-day unplanned readmission rates (2.9% vs. 2.7%). Of the ML algorithms, SVM performed the worst with a c-statistic of 0.54 and an f1-score of 0.07, whereas the random-forest classifier performed the best with the highest c-statistic of 0.74 and an f1-score of 0.18. In addition, SVM was most sensitive to loss of single features, whereas the performance of RF did not dramatically decrease after loss of single features. Within the trained RF classifier, 5 variables achieved weights >0.5 in descending order: high bilirubin (>1.9 mg/dL), age >65, race, chronic obstructive pulmonary disease, and American Society of Anesthesiologists' scores ≥3. In our validation cohort, we observed a 2.7% readmission rate. From this cohort, using the RF classifier we were then able to identify 436 high-risk patients with a predicted risk score >0.6, of whom 36 were readmitted (readmission rate of 8.2%).

CONCLUSION

Predictive analytics algorithms can achieve acceptable prediction of unplanned readmission for TSA with the RF classifier outperforming other common algorithms.