Spontaneous Recurrent Pneumothorax during Pregnancy Secondary to Ectopic Deciduosis.

Background Ectopic deciduosis is a benign presence of endometrial tissue outside of the uterus during pregnancy that rarely presents with pleuropulmonary manifestations and recurrent pneumothorax. Case Description We report a 35-year-old woman at 15 weeks' gestation with a history of recurrent intrapartum right pneumothorax found to have pleural, pulmonary, and diaphragmatic lesions and a middle lobe air leak. Wedge resection of the middle lobe and mechanical pleurodesis was performed. Histopathological analysis was progesterone receptor and PAX8 positive consistent with ectopic deciduosis. Conclusion Ectopic deciduosis is a rare cause of recurrent pneumothorax in pregnancy and should be considered when evaluating these patients.

A National Comparison of Operative Outcomes of New and Experienced Surgeons.

OBJECTIVE: To determine whether outcomes achieved by new surgeons are attributable to inexperience or to differences in the context in which care is delivered and patient complexity. BACKGROUND: Although prior studies suggest that new surgeon outcomes are worse than those of experienced surgeons, factors that underlie these phenomena are poorly understood. METHODS: A nationwide observational tapered matching study of outcomes of Medicare patients treated by new and experienced surgeons in 1221 US hospitals (2009-2013). The primary outcome studied is 30-day mortality. Secondary outcomes were examined. RESULTS: In total, 694,165 patients treated by 8503 experienced surgeons were matched to 68,036 patients treated by 2119 new surgeons working in the same hospitals. New surgeons' patients were older (25.8% aged ≥85 vs 16.3%,P<0.0001) with more emergency admissions (53.9% vs 25.8%,P<0.0001) than experienced surgeons' patients. Patients of new surgeons had a significantly higher baseline 30-day mortality rate compared with patients of experienced surgeons (6.2% vs 4.5%,P<0.0001;OR 1.42 (1.33, 1.52)). The difference remained significant after matching the types of operations performed (6.2% vs 5.1%, P<0.0001; OR 1.24 (1.16, 1.32)) and after further matching on a combination of operation type and emergency admission status (6.2% vs 5.6%, P=0.0007; OR 1.12 (1.05, 1.19)). After matching on operation type, emergency admission status, and patient complexity, the difference between new and experienced surgeons' patients' 30-day mortality became indistinguishable (6.2% vs 5.9%,P=0.2391;OR 1.06 (0.97, 1.16)). CONCLUSIONS: Among Medicare beneficiaries, the majority of the differences in outcomes between new and experienced surgeons are related to the context in which care is delivered and patient complexity rather than new surgeon inexperience.

Duty Hour Reform and the Outcomes of Patients Treated by New Surgeons.

OBJECTIVE: The aim of the study was to address the controversy surrounding the effects of duty hour reform on new surgeon performance, we analyzed patients treated by new surgeons following the transition to independent practice. SUMMARY BACKGROUND DATA: In 2003, duty hour reform affected all US surgical training programs. Its impact on the performance of new surgeons remains unstudied. METHODS: We studied 30-day mortality among 1,483,074 Medicare beneficiaries undergoing general and orthopedic operations between 1999 and 2003 ("traditional" era) and 2009 and 2013 ("modern" era). The operations were performed by 2762 new surgeons trained before the reform, 2119 new surgeons trained following reform and 15,041 experienced surgeons. We used a difference-in-differences analysis comparing outcomes in matched patients treated by new versus experienced surgeons within each era, controlling for the hospital, operation, and patient risk factors. RESULTS: Traditional era odds of 30-day mortality among matched patients treated by new versus experienced surgeons were significantly elevated [odds ratio (OR) 1.13; 95% confidence interval (CI) (1.05, 1.22), P < 0.001). The modern era elevated odds of mortality were not significant [OR 1.06; 95% CI (0.97-1.16), P = 0.239]. Relative performance of new and experienced surgeons with respect to 30-day mortality did not appear to change from the traditional era to the modern era [OR 0.93; 95% CI (0.83-1.05), P = 0.233]. There were statistically significant adverse changes over time in relative performance to experienced surgeons in prolonged length of stay [OR 1.08; 95% CI (1.02-1.15), P = 0.015], anesthesia time [9 min; 95% CI (8-10), P < 0.001], and costs [255USD; 95% CI (2-508), P = 0.049]. CONCLUSIONS: Duty hour reform showed no significant effect on 30-day mortality achieved by new surgeons compared to their more experienced colleagues. Patients of new surgeons, however, trained after duty hour reform displayed some increases in the resources needed for their care.

Defining the Content for a Quality and Safety in Surgery Curriculum Using a Nominal Group Technique.

OBJECTIVE: There is growing awareness of the need to provide surgical residents with training in quality and safety. Previous studies have revealed a need for a formal curriculum, but the content and structure of such a curriculum has not been defined. Our objective was to develop a surgery resident curriculum using a consensus, team-building approach. DESIGN: This study consisted of moderated, structured focus groups using a nominal group technique to guide discussion. Participants generated rank lists of topics to be included and answered questions regarding structure and design of teaching and assessment modalities. SETTING: Two separate focus groups among 9 surgical residents and 10 faculty experts in quality and safety were held in conjunction with the American College of Surgeons Quality and Safety Conference in July 2017. A total of 16 institutions were represented. RESULTS: A total of 35 topics were initially proposed by the resident group and a total of 41 topics were proposed by the expert group. After discussion, each group reached consensus on a final list of 9 topics. Most topics in the final lists fell into the broad areas of improvement science and nontechnical skills. Residents indicated that most topics were, on average, poorly covered by their current training program, however, a wide range was noted within each topic. Faculty indicated a preference for didactic instructional methods and assessment using multiple-choice questions. CONCLUSIONS: Quality and safety are integral components of surgical training. Learners and experts agreed that topics within the domains of improvement science and nontechnical skills should be included in a formal curriculum. Learners reported wide variation on how well these topics are currently included in graduate medical education training programs.

Using Patient Safety Reporting Systems to Understand the Clinical Learning Environment: A Content Analysis.

OBJECTIVE: To examine patient safety event reporting behavior by trainees caring for surgical patients compared to other clinicians. DESIGN: Qualitative analysis of a patient safety event reporting system comparing reports entered by trainees to those entered by attending physicians and nurses. Categorical data associated with reports were compared, and free-text event descriptions underwent content analysis focusing on themes related to report completeness and report focus. SETTING: The Hospital of the University of Pennsylvania, an academic tertiary care hospital in Philadelphia, Pennsylvania. PARTICIPANTS: All patient safety event reports related to surgical patients from a 6-month period (July-December 2016). RESULTS: One thousand four hundred twenty-three reports were entered by trainees (T), attendings (A), and nurses (N). Trainees had a lower number of reports entered per reporter compared to nurses (T median [IQR]: 1 [1-2], N: 2 [1-3]), and the highest percentage of reports entered anonymously for any group (T: 28.7%, N: 9.9%, A: 4.6%). The overall distribution of event location and event type differed significantly between groups (p < 0.001). Trainee reports were found to have a broader range of focus, more elements associated with completeness of reports, and more frequent use of blame language. CONCLUSIONS: Surgical trainees report a wide variety of issues in the perioperative, floor, and ICU settings. Their reports often include more details than those entered by other clinicians, but feature higher rates of anonymous reporting and use of blame language. Analysis of patient safety event reports by trainees compared with other healthcare professionals can reveal important insights into the clinical learning environment and areas for safety improvement.

Association of Surgical Practice Patterns and Clinical Outcomes With Surgeon Training in University- or Nonuniversity-Based Residency Program.

Importance: Important metrics of residency program success include the clinical outcomes achieved by trainees after transitioning to practice. Previous studies have shown significant differences in reported training experiences of general surgery residents at nonuniversity-based residency (NUBR) and university-based residency (UBR) programs. Objective: To examine the differences in practice patterns and clinical outcomes between surgeons trained in NUBR and those trained in UBR programs. Design, Setting, and Participants: This observational cohort study linked the claims data of patients who underwent general surgery procedures in New York, Florida, and Pennsylvania between January 1, 2012, and December 31, 2013, to demographic and training information of surgeons in the American Medical Association Physician Masterfile. Patients who underwent a qualifying procedure were grouped by surgeon. Practice pattern analysis was performed on 3638 surgeons and 1 237 621 patients, representing 214 residency programs. Clinical outcomes analysis was performed on 2301 surgeons and 312 584 patients. Data analysis was conducted from February 1, 2017, to July 31, 2017. Exposures: NUBR or UBR training status. Main Outcomes and Measures: Inpatient mortality, complications, and prolonged length of stay. Results: No significant differences were observed between the NUBR-trained surgeons and UBR-trained surgeons in age (mean, 53.3 years vs 53.7 years), sex (female, 18.2% vs 16.9%), or years of clinical experience (mean, 16.5 years vs 16.5 years). Overall, NUBR-trained surgeons compared with UBR-trained surgeons performed more procedures (median interquartile range [IQR], 328 [93-661] vs 164 [49-444]; P < .001) and performed a greater proportion of procedures in the outpatient setting (risk difference, 6.5; 95% CI, 6.4 to 6.7; P < .001). Before matching, the mean proportion of patients with documented inpatient mortality was lower for NUBR-trained surgeons than for UBR-trained surgeons (risk difference, -1.01; 95% CI, -1.41 to -0.61; P < .001). The mean proportion of patients with complications (risk difference, -3.17%; 95% CI, -4.21 to -2.13; P < .001) and prolonged length of stay (risk difference, -1.89%; 95% CI, -2.79 to -0.98; P < .001) was also lower for NUBR-trained surgeons. After matching, no significant differences in patient mortality, complications, and prolonged length of stay were found between NUBR- and UBR-trained surgeons. Conclusions and Relevance: Surgeons trained in NUBR and UBR programs have distinct practice patterns. After controlling for patient, procedure, and hospital factors, no differences were observed in the inpatient outcomes between the 2 groups.

Does Surgeon Sex Matter?: Practice Patterns and Outcomes of Female and Male Surgeons.

OBJECTIVE: We sought to compare postoperative outcomes of female surgeons (FS) and male surgeons (MS) within general surgery. SUMMARY OF BACKGROUND DATA: FS in the workforce are increasing in number. Female physicians provide exceptional care in other specialties. Differences in surgical outcomes of FS and MS have not been examined. METHODS: We linked the AMA Physician Masterfile to discharge claims from New York, Florida, and Pennsylvania (2012 to 2013) to examine practice patterns and to compare surgical outcomes of FS and MS. We paired FS and MS operating at the same hospital using cardinality matching with refined balance and compared inpatient mortality, any postoperative complication, and prolonged length of stay (pLOS) in FS and MS. RESULTS: Overall practice patterns differed between the 663 FS and 3219 MS. We identified 2462 surgeons (19% FS, 81% MS) at 429 hospitals who met inclusion criteria for outcomes analysis. FS were younger (mean age ±â€ŠSD FS: 48.5 ±â€Š8.4 years, MS: 54.3 ±â€Š9.4y; P < 0.001) with less clinical experience (mean years ±â€ŠSD FS: 11.6 ±â€Š8.3 y, MS: 17.6 ±â€Š10.0 years; P < 0.001) than MS before matching. FS had lower rates of inpatient mortality (FS: 1.51%, MS: 2.30%; P < 0.001), any postoperative complication (FS: 12.6%, MS: 16.1%; P < 0.001), and pLOS (FS: 18.4%, MS: 20.7%; P < 0.001) before matching. After matching, FS and MS outcomes were equivalent. CONCLUSION: Surgeon practice patterns vary by sex and experience. FS and MS with similar characteristics who treat similar patients at the same hospital have equivalent rates of inpatient morality, postoperative complications, and prolonged length of hospital stay. Patients should select the surgeon who is the best fit for them regardless of sex.

The Quality In-Training Initiative: Giving Residents Data to Learn Clinical Effectiveness.

BACKGROUND: Training programs are expected to provide clinical outcomes data to residents. Few systems have the necessary infrastructure. We evaluated initial adoption and use of the Quality In-Training Initiative (QITI) platform linking National Surgical Quality Improvement Program (NSQIP) data to trainees. STUDY DESIGN: Proportions of Accreditation Council for Graduate Medical Education general surgery residency programs with differing levels of NSQIP and QITI affiliation were calculated and program characteristics were compared. All NSQIP sites that captured QITI custom field data from July 2013 to June 2016 were included in case analysis. Differences in case collection were compared between participating (P) sites that actively participated in QITI and nonparticipating (NP) sites that did not. Resident participation by procedure type was examined. RESULTS: Of 268 accredited general surgery residency programs, 92% (n = 248) is affiliated with a NSQIP hospital and 61% of all clinical months is spent at NSQIP sites. For 42% of all programs (n = 114), the primary teaching hospital is affiliated with the QITI. In all, 74 P sites and 89 NP sites captured a total of 417,816 cases. The median number of cases captured per site was statistically higher for P sites (3063) compared with NP sites (2307, p < 0.001). A total of 68.3% of all cases captured had resident participation indicated by postgraduate year (n = 285,469). The most common procedures with resident participation were laparoscopic appendectomy (n = 17,082, 6.0%) and laparoscopic cholecystectomy (n = 15,502, 5.4%). Percentage coverage rates ranged from 17.3% to 91.8%. CONCLUSION: Most general surgery rotations are at NSQIP sites. Identifying resident participation in captured NSQIP cases is feasible on a large scale. Captured cases reflect national case-mix. The platform has the potential to collect data on institutional and program-level variation in resident operative experience that may be used to improve training.

Outcomes of hospitalized patients undergoing emergency general surgery remote from admission.

BACKGROUND: Emergency general surgery during hospitalization has not been well characterized. We examined emergency operations remote from admission to identify predictors of postoperative 30-day mortality, postoperative duration of stay >30 days, and complications. METHODS: Patients >18 years in The American College of Surgeons National Surgical Quality Improvement Program (2011-2014) who had 1 of 7 emergency operations between hospital day 3-18 were included. Patients with operations >95th percentile after admission (>18 days; n = 581) were excluded. Exploratory laparotomy only (with no secondary procedure) represented either nontherapeutic or decompressive laparotomy. Multivariable logistic regression was used to identify predictors of study outcomes. RESULTS: Of 10,093 patients with emergency operations, most were elderly (median 66 years old [interquartile ratio: 53-77 years]), white, and female. Postoperative 30-day mortality was 12.6% (n = 1,275). Almost half the cohort (40.1%) had a complication. A small subset (6.8%) had postoperative duration of stay >30 days. Postoperative mortality after exploratory laparotomy only was particularly high (>40%). In multivariable analysis, an operation on hospital day 11-18 compared with day 3-6 was associated with death (odds ratio 1.6 [1.3-2.0]), postoperative duration of stay >30 days (odds ratio 2.0 [1.6-2.6]), and complications (odds ratio 1.5 [1.3-1.8]). Exploratory laparotomy only also was associated with death (odds ratio 5.4 [2.8-10.4]). CONCLUSION: Emergency general surgery performed during a hospitalization is associated with high morbidity and mortality. A longer hospital course before an emergency operation is a predictor of poor outcomes, as is undergoing exploratory laparotomy only.

Identification of process measures to reduce postoperative readmission.

BACKGROUND: Readmission rates after intestinal surgery have been notably high, ranging from 10 % for elective surgery to 21 % for urgent/emergent surgery. Other than adherence to established strategies for decreasing individual postoperative complications, there is little guidance available for providers to work toward reducing their postoperative readmission rates. STUDY DESIGN: Processes of care that may affect postoperative readmissions were identified through a systematic literature review, assessment of existing guidelines, and semi-structured interviews with individuals who have expertise in hospital readmissions and surgical quality improvement. Eleven experts ranked potential process measures for validity on the basis of the RAND/University of California, Los Angeles Appropriateness Methodology. RESULTS: Of 49 proposed process measures, 34 (69 %) were rated as valid. Of the 34 valid measures, two measures addressed care in the preoperative period. These included evaluation of patient's comorbidities, providing written instruction detailing the anticipated perioperative course, and communication with the patient's referring or primary care doctor. A measure addressing perioperative care stated that institutions should have a standardized perioperative care protocol. Additional measures focused on discharge instructions and communication. CONCLUSIONS: An expert panel identified several aspects of care that are considered essential to quality patient care and important to reducing postoperative readmissions.

The unmet need for a national surgical quality improvement curriculum: a systematic review.

INTRODUCTION: The Accreditation Council for Graduate Medical Education Next Accreditation System will require general surgery training programs to demonstrate outstanding clinical outcomes and education in quality improvement (QI). The American College of Surgeons-National Surgical Quality Improvement Project Quality In-Training Initiative reports the results of a systematic review of the literature investigating the availability of a QI curriculum. METHODS: Using defined search terms, a systematic review was conducted in Embase, PubMed, and Google Scholar (January 2000-March 2013) to identify a surgical QI curriculum. Bibliographies from selected articles and other relevant materials were also hand searched. Curriculum was defined as an organized program of learning complete with content, instruction, and assessment for use in general surgical residency programs. Two independent observers graded surgical articles on quality of curriculum presented. RESULTS: Overall, 50 of 1155 references had information regarding QI in graduate medical education. Most (n = 24, 48%) described QI education efforts in nonsurgical fields. A total of 31 curricular blueprints were identified; 6 (19.4%) were specific to surgery. Targeted learners were most often post graduate year-2 residents (29.0%); only 6 curricula (19.4%) outlined a course for all residents within their respective programs. Plan, Do, Study, Act (n = 10, 32.3%), and Root Cause Analysis (n = 5, 16.1%) were the most common QI content presented, the majority of instruction was via lecture/didactics (n = 26, 83.9%), and only 7 (22.6%) curricula used validated tool kits for assessment. CONCLUSION: Elements of QI curriculum for surgical education exist; however, comprehensive content is lacking. The American College of Surgeons-National Surgical Quality Improvement Project Quality In-Training Initiative will build on the high-quality components identified in our review and develop data-centered QI content to generate a comprehensive national QI curriculum for use in graduate surgical education.

Adherence with postdischarge venous thromboembolism chemoprophylaxis recommendations after colorectal cancer surgery among elderly Medicare beneficiaries.

OBJECTIVES: To assess national adherence with extended venous thromboembolism (VTE) chemoprophylaxis guideline recommendations after colorectal cancer surgery. BACKGROUND: Postoperative VTE remains a major cause of morbidity and mortality after abdominal cancer surgery. On the basis of the results from randomized controlled trials, since 2007, national guidelines have suggested that these patients be discharged on VTE chemoprophylaxis. METHODS: Medicare beneficiaries undergoing open colorectal cancer resections in 2008-2009 were identified using the Medicare Provider Analysis and Review data and limited to those who were enrolled and used Part D for their postoperative prescriptions. Postdischarge use of low-molecular-weight-heparin and other anticoagulants was assessed. RESULTS: A total of 5078 patients underwent open colorectal cancer surgery and met the inclusion criteria. Of these, 77% underwent colectomy and 23% underwent proctectomy. A prescription for an anticoagulant was filled immediately after discharge for 77 (1.5%) patients, and a low-molecular-weight-heparin for 60 (1.2%) patients. On multivariable analysis, patients were more likely to receive postdischarge VTE chemoprophylaxis if undergoing rectal cancer surgery [incidence rate ratio (IRR), 1.83; 95% confidence interval, 1.07-3.12; vs colon], if higher educational status (IRR, 2.20; 95% confidence interval, 1.23-3.95; vs low education), or if they had a higher Elixhauser comorbidity index (IRR, 1.13; 95% confidence interval, 1.01-1.25; vs lower index). CONCLUSIONS: Although VTE remains a major issue after abdominal cancer surgery, only 1.5% of Medicare beneficiaries undergoing colorectal cancer surgery received care consistent with established guidelines for postdischarge VTE chemoprophylaxis. Barriers to adherence must be elucidated to improve the quality of care for abdominal and pelvic cancer surgery patients.

Quality in-training initiative--a solution to the need for education in quality improvement: results from a survey of program directors.

BACKGROUND: The Next Accreditation System and the Clinical Learning Environment Review Program will emphasize practice-based learning and improvement and systems-based practice. We present the results of a survey of general surgery program directors to characterize the current state of quality improvement in graduate surgical education and introduce the Quality In-Training Initiative (QITI). STUDY DESIGN: In 2012, a 20-item survey was distributed to 118 surgical residency program directors from ACS NSQIP-affiliated hospitals. The survey content was developed in collaboration with the QITI to identify program director opinions regarding education in practice-based learning and improvement and systems-based practice, to investigate the status of quality improvement education in their respective programs, and to quantify the extent of resident participation in quality improvement. RESULTS: There was a 57% response rate. Eighty-five percent of program directors (n = 57) reported that education in quality improvement is essential to future professional work in the field of surgery. Only 28% (n = 18) of programs reported that at least 50% of their residents track and analyze their patient outcomes, compare them with norms/benchmarks/published standards, and identify opportunities to make practice improvements. CONCLUSIONS: Program directors recognize the importance of quality improvement efforts in surgical practice. Subpar participation in basic practice-based learning and improvement activities at the resident level reflects the need for support of these educational goals. The QITI will facilitate programmatic compliance with goals for quality improvement education.

American College of Surgeons NSQIP: quality in-training initiative pilot study.

BACKGROUND: Clinical outcomes data are playing an increasingly important role in medical decision-making, reimbursement, and provider evaluation, but there are no documented programs that provide outcomes data to surgical residents as part of a structured curriculum. Our objectives were to develop a national collaborative of training programs to unify the efforts between quality and education personnel and demonstrate the feasibility of generating customized reports of patient outcomes for use in surgical education. STUDY DESIGN: The pool of potential hospitals was evaluated by comparing ACS NSQIP participants with the roster of clinical sites for general surgery residency programs maintained by FREIDA Online. A program and user guide was developed to generate custom reports based on institutional data, and a voluntary pilot was conducted, consisting of initial development, implementation, and feedback stages. Programs that successfully completed installation and report generation were queried for feedback on time and resources used. RESULTS: Of 245 general surgery residency programs, 47% had a NSQIP-affiliated sponsor institution, and an additional 31% had at least 1 NSQIP-affiliated participant institution. Sixty general surgery residency programs have expressed interest in collaboration. Seventeen pilot sites completed training and installation, and were able to independently generate custom reports. The response rate for the post-report survey was 50%. Participants reported that training and installation typically required one 2-hour phone call, and that total time devoted to the project was less than 8 hours. CONCLUSIONS: Collaboration between educators and quality improvement personnel from a diverse group of organizations to integrate outcomes data into surgical education is feasible. Obtaining resident and team reports from ACS NSQIP can be done with minimal effort. Future efforts will be aimed at developing a national data-centered curriculum for general surgery programs.

Development and participant assessment of a practical quality improvement educational initiative for surgical residents.

BACKGROUND: As patient-safety and quality efforts spread throughout health care, the need for physician involvement is critical, yet structured training programs during surgical residency are still uncommon. Our objective was to develop an extended quality-improvement curriculum for surgical residents that included formal didactics and structured practical experience. METHODS: Surgical trainees completed an 8-hour didactic program in quality-improvement methodology at the start of PGY3. Small teams developed practical quality-improvement projects based on needs identified during clinical experience. With the assistance of the hospital's process-improvement team and surgical faculty, residents worked through their selected projects during the following year. Residents were anonymously surveyed after their participation to assess the experience. RESULTS: During the first 3 years of the program, 17 residents participated, with 100% survey completion. Seven quality-improvement projects were developed, with 57% completing all DMAIC (Define, Measure, Analyze, Improve, Control) phases. Initial projects involved issues of clinical efficiency and later projects increasingly focused on clinical care questions. Residents found the experience educationally important (65%) and believed they were well equipped to lead similar initiatives in the future (70%). Based on feedback, the timeline was expanded from 12 to 24 months and changed to start in PGY2. CONCLUSIONS: Developing an extended curriculum using both didactic sessions and applied projects to teach residents the theory and implementation of quality improvement is possible and effective. It addresses the ACGME competencies of practice-based improvement and learning and systems-based practice. Our iterative experience during the past 3 years can serve as a guide for other programs.

Validation of new readmission data in the American College of Surgeons National Surgical Quality Improvement Program.

BACKGROUND: Hospital readmissions are gathering increasing attention as a measure of health care quality and as a cost-saving target. The American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP) recently began collecting data related to 30-day postoperative readmissions. Our objectives were to assess the accuracy of the ACS NSQIP readmission variable by comparison with the medical record, and to evaluate the readmission variable against administrative data. STUDY DESIGN: Readmission data captured in ACS NSQIP at a single academic institution between January and December 2011 were compared with data abstracted from the medical record and administrative data. RESULTS: Of 1,748 cases captured in ACS NSQIP, 119 (6.8%) had an all-cause readmission event identified, and ACS NSQIP had very high agreement with chart review for identifying all-cause readmission events (κ = 0.98). For 1,110 inpatient cases successfully matched with administrative data, agreement with chart review for identifying all-cause readmissions was also very high (κ = 0.97). For identifying unplanned readmission events, ACS NSQIP had good agreement with chart review (κ = 0.67). Overall, agreement with chart review on cause of readmission was higher for ACS NSQIP (κ = 0.75) than for administrative data (κ = 0.46). CONCLUSIONS: The ACS NSQIP accurately captured all-cause and unplanned readmission events and had good agreement with the medical record with respect to cause of readmission. Administrative data accurately captured all-cause readmissions, but could not identify unplanned readmissions and less consistently agreed with chart review on cause. The granularity of clinically collected data offers tremendous advantages for directing future quality efforts targeting surgical readmission.