A Nationwide Analysis of Popliteal Vascular Injuries and Outcomes by Hospital Teaching Status.

BACKGROUND: Popliteal artery injuries are the second most common arterial injuries below the inguinal ligament. We aimed to compare outcomes in patients with popliteal injuries by hospital teaching status utilizing the National Trauma Data Bank Research Data Set (NTDB-RDS) 2013-2016. METHODS: Four-year retrospective study using the NTDB-RDS, evaluating popliteal vascular injuries. Patients were divided by popliteal injury type and teaching status into; nonteaching hospital (NTH), community teaching (CTH), or University teaching (UTH). Demographics and outcome measures were compared between groups. Risk-adjusted mortality odds ratios (ORs) were calculated. Significance was defined as P < 0.05. RESULTS: 3,577,168 patients were in the NTDB-RDS, with 1120 having a popliteal injury, (incidence = 0.03%). There was no significant difference in the amputation rate between patients treated in NTHs, CTHs, or UTHs (P > 0.05). There was no significant difference in the raw mortality rate between patients treated in NTHs, CTHs, or UTHs. After adjusting for confounders; compared to NTH, the odds ratio for mortality for popliteal artery injuries in the CTH group was significantly higher (OR: 15.95, 95% CI: 1.19-213.84), and for the UTH group the mortality was also significantly higher (OR: 5.74, 95% CI: 0.45-72.95). CONCLUSIONS: The incidence of popliteal vascular injuries was 0.03% for 2013-2016. Patients with popliteal artery injuries treated at community teaching hospitals have a 16 times higher risk of mortality and at university teaching hospitals have a 5.7 times higher risk of mortality than patients treated at nonteaching hospitals.

Effect of hospital teaching status on endoscopic retrograde cholangiopancreatography mortality and complications in the USA.

BACKGROUND: Our aim was to assess the differences in outcomes of cholecystitis, pancreatitis, gastrointestinal (GI) bleed, GI perforation, and mortality in teaching versus nonteaching hospitals nationwide among therapeutic and diagnostic ERCPs. We hypothesized that complication rates would be higher in teaching hospitals given greater patient complexity. METHODS: Inpatient diagnostic and therapeutic ERCPs were identified from the National Inpatient Sample (NIS) from 2008 to 2012. The presence of ACGME-approved residency programs is required to qualify as a teaching hospital. Nonteaching urban and rural hospitals were grouped together. We identified hospital stays complicated by pancreatitis, cholecystitis, GI hemorrhage, perforation, and mortality. Logistic regression propensity-matched analysis was performed in SPSS to compare differences in complication rates between teaching and nonteaching hospitals. RESULTS: A total of 1,466,356 weighted cases of inpatient ERCPs were included in this study: of those, 367 and188 were diagnostic, 1,099,168 were therapeutic, 766,230 were at teaching hospitals, and 700,126 were at nonteaching hospitals. Mortality rates were higher in teaching hospitals when compared to nonteaching hospitals for diagnostic (OR 1.266, p < 0.001) and therapeutic ERCPs (OR 1.157, p = 0.001). There was no significant difference in rates of post-ERCP cholecystitis, pancreatitis, or perforation between the two groups. Among diagnostic ERCPs, GI hemorrhage was higher in teaching compared to nonteaching hospitals (OR 1.181, p = 0.003). Likewise, length of stay was increased in teaching hospitals (7.9 vs 6.9 days, p < 0.001, for diagnostic and 6.5 vs 5.8 days, p < 0.001, for therapeutic ERCPs). CONCLUSIONS: In conclusion, teaching hospitals were noted to have a higher mortality rate associated with inpatient ERCPs as well as higher rates of GI hemorrhage in diagnostic ERCPs, which may be due to a higher comorbidity index in those patients admitted to teaching hospitals.

Hospital teaching status associated with reduced inpatient mortality and perioperative complications in surgical neuro-oncology.

PURPOSE: Studies have demonstrated that higher surgical volumes correlate with improved neurosurgical outcomes yet none exist evaluating the effects of hospital teaching status on the surgical neuro-oncology patient. We present the first analysis comparing brain tumor surgery perioperative outcomes at academic and non-teaching centers. METHODS: Brain tumor surgeries in the Nationwide Inpatient Sample (NIS) from 1998 to 2014 were identified. A teaching hospital, defined by the NIS, must have ≥ 1 Accreditation Council of Graduate Medical Education (ACGME) approved residency programs, Council of Teaching Hospitals membership, or have a ratio ≥ 0.25 of full-time residents to hospital beds. Annual treatment trends were stratified by hospital teaching status, assessing yearly caseload with linear regression. Multivariable logistic regression determined predictors of inpatient mortality/complications. Hospitals were further divided into quartiles by case volume and teaching status was compared in each. RESULTS: Teaching hospitals (THs) exhibited an average annual increase in brain tumor surgeries (+ 1057/year, p < 0.0001). In multivariable analysis, teaching status was associated with decreased risk of mortality (OR 0.82, p = 0.0003) and increased likelihood of discharge home (OR 1.21, p < 0.0001). In subgroup analysis, within the highest hospital quartile by caseload, higher mortality rates and lower routine discharges were again seen at non-teaching hospitals (NTHs) (p = 0.0002 and p = 0.0016, respectively). CONCLUSION: THs are performing more brain tumor surgeries over time with lower rates of inpatient mortality and perioperative complications even after controlling for hospital case volume. These results suggest a shift in neuro-oncology practice patterns favoring THs to optimize patient outcomes especially at the highest volume centers.

Hospital teaching status and trascatheter aortic valve replacement outcomes in the United States: Analysis of the national inpatient sample.

BACKGROUND: Evidence suggests that medical service offerings vary by hospital teaching status. However, little is known about how these translate to patient outcomes. We therefore sought to evaluate this gap in knowledge in patients undergoing Transcatheter aortic valve replacement (TAVR) in the United States. METHODS: This study was conducted using the National Inpatient Sample (NIS) in the United States from 2011 to 2014. Teaching status was classified, as teaching vs. nonteaching and endpoints were clinical outcomes, length of stay and cost. Procedure-related complications were identified via ICD-9 coding and analysis was performed via mixed effect model. RESULTS: An estimated 33,790 TAVR procedures were performed in the U.S between 2011 and 2014, out of which 89.3% were in teaching hospitals. Mean (SD) age was 81.4 (8.5) and 47% were females. There was no significant difference between teaching versus nonteaching hospitals in regards to the primary outcome of in-hospital mortality and secondary outcomes of several cardiovascular and other end points except for a high rates of acute kidney injury (AKI) (OR: 1.34 [95% CI, 1.04-1.72]) and lower rate for use of mechanical circulatory support devices in teaching vs. nonteaching centers. The mean length of stay was significantly higher in teaching hospitals (7.7 days) vs. nonteaching hospitals (6.8 days) (P = 0.002) and so was the median cost of hospitalization (USD 50,814 vs. USD 48, 787, P = 0.02) for teaching vs. nonteaching centers. CONCLUSION: Most TAVR related short-term outcomes including all cause in-hospital mortality are about the same in teaching and nonteaching hospitals. However, AKI, length of hospital stay and TAVR related cost were significantly higher in teaching than nonteaching hospitals. There was more use of mechanical circulatory support in nonteaching than teaching hospitals.

Outcomes of Upper Gastrointestinal Bleeding at United States Teaching and Non-teaching Hospitals: A National Inpatient Sample Analysis.

BACKGROUND/AIMS: Studies have varied results regarding the impact of the teaching and non-teaching status of hospitals on the outcomes for hospitalized patients with upper gastrointestinal bleeding (UGIB). To evaluate these outcomes, we conducted a retrospective cohort study using the 2014 National Inpatient Sample (NIS) database. METHODS: We included all adult patients who were admitted with the principal diagnosis of UGIB. Patients admitted to rural and urban non-teaching hospitals were classified as non-teaching, whereas those admitted to urban teaching hospitals were classified as teaching. The main outcomes of interest were in-hospital mortality, percentage of patients requiring inpatient endoscopy, and endoscopic therapy, packed red blood cell (PRBC) transfusion, length of stay (LOS), and total hospitalization charges. RESULTS: The study included 132,085 (97%) with nonvariceal UGIB (NVUGIB) and 4,200 (3%) with variceal UGIB (VUGIB). Of them, 62% were managed at teaching hospitals. Compared with admitted patients at non-teaching hospitals, patients with nonvariceal UGIB admitted at teaching hospitals had similar adjusted in-hospital mortality rates (adjusted odds ratio (OR): 0.97, 95% confidence interval (CI): 0.79-1.19), inpatient endoscopy rates (OR: 0.98, 95% CI: 0.91-1.1), and early endoscopy rates (within 24 hours) (OR: 0.98, 95% CI: 0.91-1.1) and lower PRBC transfusion rates (OR: 0.87, 95% CI: 0.79-0.97) but higher endoscopic therapy rates (OR: 1.3, 95% CI: 1.2-1.4), length of stay (mean increase of 0.43 days) (P<0.01), and total hospital charges (mean increase of $4,369) (P<0.01). Patients with variceal UGIB had similar adjusted in-hospital mortality rates (OR: 1.2, 95% CI: 0.61-2.3), inpatient endoscopy rates (OR: 0.97, 95% CI: 0.67-1.4), early endoscopy rates (within 24 hours) (OR: 0.97, 95% CI: 0.67-1.4), endoscopic therapy rates (OR: 2.5, 95% CI: 0.54- 11.2), and total hospital charges (P=0.45), and lower PRBC transfusion rates (OR: 0.63, 95% CI: 0.45-0.88) but higher length of stay (mean increase of 0.69 days) (P=0.02). CONCLUSIONS: Patients with nonvariceal UGIB treated at US teaching hospitals and non-teaching hospitals have similar mortality, rates of in-hospital endoscopy, and early endoscopy, but teaching hospitals have higher rates of in-hospital therapeutic endoscopy, length of stay, and total hospital charges. There was no difference in any of the outcomes for variceal gastrointestinal (GI) bleeding treated at teaching hospitals compared with those treated at non-teaching hospitals, except for length of stay, which was higher among patients admitted to teaching hospitals compared to those admitted to non-teaching hospitals.

Hospital teaching status and patient outcomes in intestinal obstruction surgery: A comparative analysis.

Objectives: Surgery at large teaching hospitals is reportedly associated with more favourable outcomes. However, these results are not uniformly consistent across all surgical patients. This study aimed to assess potential disparities in clinical outcomes by hospital type for patients with intestinal obstruction. Material and Methods: 2018 NIS was queried for all adult non-elective admissions for intestinal obstruction. Hospitals were classified as either smallmedium non-teaching hospitals or large teaching hospitals. Multivariate regression analyses were used to assess the association between hospital type and inpatient mortality, access to surgery, admission duration, non-home discharges, hospital costs, and postoperative complications. Results: After adjustments, admission to large teaching hospitals was not associated with a reduction in inpatient mortality (AOR= 0.73; 95% CI= 0.41- 1.31; p= 0.29), lower likelihood of surgery (AOR= 0.93; 95% CI= 0.58-1.48; p= 0.76) or increased chance of early surgery (p= 0.97). Patients admitted to large teaching hospitals had shorter hospital stays (p= 0.002) and were less likely to be discharged to other acute care hospitals (AOR= 0.94; 95% CI= 0.80-0.94; p= 0.04). Admission to large teaching hospitals was not associated with a reduction in perioperative complications (AOR= 1.04; 95% CI= 0.80- 1.28; p= 0.91) or significantly higher hospital costs (mean increase= 1518; 95% CI= 1891-4927; p= 0.38). Conclusion: Admission to large teaching hospitals does not necessarily result in better patient outcomes. Merely considering the teaching status of the hospital in isolation cannot explain the diverse outcomes observed for this condition.

Trends in performance of hospital outpatient procedures and associated 30-day costs among Medicare beneficiaries from 2011 to 2018.

BACKGROUND: United States healthcare has increasingly transitioned to outpatient care delivery. The degree to which Academic Medical Centers (AMCs) have been able to shift surgical procedures from inpatient to outpatient settings despite higher patient complexity is unknown. METHODS: This observational study used a 20% sample of fee-for-service Medicare beneficiaries age 65 and older undergoing eight elective procedures from 2011 to 2018 to model trends in procedure site (hospital outpatient vs. inpatient) and 30-day standardized Medicare costs, overall and by hospital teaching status. RESULTS: Of the 1,222,845 procedures, 15.9% occurred at AMCs. There was a 2.42% per-year adjusted increase (95% CI 2.39%-2.45%; p < .001) in proportion of outpatient hospital procedures, from 68.9% in 2011 to 85.4% in 2018. Adjusted 30-day standardized costs declined from $18,122 to $14,353, (-$560/year, 95% CI -$573 to -$547; p < .001). Patients at AMCs had more chronic conditions and higher predicted annual mortality. AMCs had a lower proportion of outpatient procedures in all years compared to non-AMCs, a difference that was statistically significant but small in magnitude. AMCs had higher costs compared to non-AMCs and a lesser decline over time (p < .001 for the interaction). AMCs and non-AMCs saw a similar decline in 30-day mortality. CONCLUSIONS: There has been a substantial shift toward outpatient procedures among Medicare beneficiaries with a decrease in total 30-day Medicare spending as well as 30-day mortality. Despite a higher complexity population, AMCs shifted procedures to the outpatient hospital setting at a similar rate as non-AMCs. IMPLICATIONS: The trend toward outpatient procedural care and lower spending has been observed broadly across AMCs and non-AMCs, suggesting that Medicare beneficiaries have benefited from more efficient delivery of procedural care across academic and community hospitals.

Who benefits from resuscitative thoracotomies following penetrating trauma: The patient or the learner?

BACKGROUND: Resuscitative thoracotomy (RT) is a salvage procedure following traumatic cardiac arrest. We aim to evaluate RT trends and outcomes in adults with cardiac arrest following penetrating trauma to determine the effect on mortality in this population. Further, we aim to estimate the effect of hospital teaching status on the performance of resuscitative thoracotomies and mortality. METHODS: We reviewed the National Trauma Data Bank (2017-2021) for adults (≥16 years old) with penetrating trauma and prehospital cardiac arrest, stratified by the performance of a RT. We performed multivariable logistic regressions to estimate the effect of RT on mortality and the effect of hospital teaching status on the performance of resuscitative thoracotomies and mortality. RESULTS: 13,115 patients met our inclusion criteria. RT occurred in 12.7% (n = 1,664) of patients. Rates of RT trended up over the study period. Crude mortality was similar in RT and Non-RT patients (95.6% vs. 94.5%, p = 0.07). There was no statistically significant difference in the adjusted odds of mortality based on RT status (OR 0.82, 95%CI 0.56-1.21). University-teaching hospitals had an adjusted odds ratio of 1.68 (95% CI 1.31-2.17) for performing a RT than non-teaching hospitals. There was no difference in the adjusted odds of mortality in patients that underwent RT based on hospital teaching status. CONCLUSION: Despite up-trending rates, a resuscitative thoracotomy may not improve mortality in adults with penetrating, traumatic cardiac arrest. University teaching hospitals are nearly twice as likely to perform a RT than non-teaching hospitals, with no subsequent improvement in mortality.

Comparing the demographic data and outcomes of septic shock patients presenting to teaching or non-teaching metropolitan hospitals in the United States.

BACKGROUND: Studies looking at the effect of hospital teaching status on septic shock related in-hospital mortality are lacking. The aim of this study was to examine the effect of hospital teaching status on mortality in septic shock patients in the United States. METHODS: This was a retrospective observational study, using the Nationwide Emergency Department Sample Database (released in 2018). All patients with septic shock were included. Complex sample logistic regression was performed to assess the impact of hospital teaching status on patient mortality. RESULTS: A total of 388,552 septic shock patients were included in the study. The average age was 66.93 years and 51.7% were males. Most of the patients presented to metropolitan teaching hospitals (68.2%) and 31.8% presented to metropolitan non-teaching hospitals. Septic shock patients presenting to teaching hospitals were found to have a higher percentage of medical comorbidities, were more likely to be intubated and placed on mechanical ventilation (50.5% vs. 46.9%) and had a longer average length of hospital stay (12.47 d vs. 10.20 d). Septic shock patients presenting to teaching hospitals had greater odds of in-hospital mortality compared to those presenting to metropolitan non-teaching hospitals (adjusted odd ratio [OR]=1.295, 95% confidence interval [CI]: 1.256-1.335). CONCLUSION: Septic shock patients presenting to metropolitan teaching hospitals had significantly higher risks of mortality than those presenting to metropolitan non-teaching hospitals. They also had higher rates of intubation and mechanical ventilation as well as longer lengths of hospital stay than those in non-teaching hospitals.

Does Hospital Teaching Status Matter? Impact of Hospital Teaching Status on Pattern and Incidence of 90-day Readmissions After Primary Total Hip Arthroplasty.

BACKGROUND: Given financial and clinical implications of readmissions after total hip arthroplasty (THA) and the potential for varied expenditures related to a hospital's teaching status, this study sought to characterize 90-day hospital readmission patterns and assess likelihood of readmission based on teaching designation of a Medicare beneficiaries' (MB's) index THA hospital. METHODS: Retrospective analysis of 2016-2018 Centers for Medicare and Medicaid Services-linked data identified primary THA hospitalizations and readmissions within 90 days. Hospitals were categorized as teaching or nonteaching (Council of Teaching Hospitals and Health Systems). Chi-squared analysis and Fisher exact test assessed differences between readmission hospitals and the index hospital teaching status. Multivariate logistic regression models estimated risk-adjusted probability of experiencing at least one 90-day readmission. RESULTS: Analysis identified 433,959 index THA admissions with an all-cause 90-day readmission rate of 9.12%. Most readmissions were to the same hospital regardless of index THA hospital teaching status (67.5% index teaching; 68.2% index nonteaching). Crossover in hospital teaching status from the index procedure to readmission location was more common for those with index THA at a teaching hospital (18.9%) than for MBs with index THA performed at a nonteaching hospital (6.2%). Controlling for patient characteristics, no significant relationship was found between 90-day readmission and index hospital teaching status (odds ratio 0.98, confidence interval 0.947-1.011). CONCLUSIONS: Overall, while certain patterns of readmission after the index THA were observed, after controlling for patient characters and comorbidities, there was no significant association between 90-day all-cause readmission and index hospital teaching status.

The Impact of Hospital Teaching Status on Colonoscopy Perforation Risk: A National Inpatient Sample Study.

BACKGROUND: Colonoscopy has been widely used as a diagnostic tool for many conditions, including inflammatory bowel disease and colorectal cancer. Colonoscopy complications include perforation, hemorrhage, abdominal pain, as well as anesthesia risk. Although rare, perforation is the most dangerous complication that occurs in the immediate post-colonoscopy period with an estimated risk of less than 0.1%. Studies on colonoscopy perforation risk between teaching hospitals and non-teaching hospitals are scarce. METHODS: The National Inpatient Sample database was queried for patients who underwent inpatient colonoscopy between January 2010 and December 2014 in teaching versus non-teaching facilities in order to study their perforation rates. Our study population included 257,006 patients. Univariate regression was performed, and the positive results were analyzed using a multivariate regression module. RESULTS: Teaching hospitals had a higher risk of perforation (odds ratio 1.23, confidence interval 1.07 - 1.42, P = 0.004). Perforation rates were higher in females, patients with inflammatory bowel disease and dilatation of strictures. Polypectomy did not yield any statistical difference between the study groups. Other factors such as African-American ethnicity appeared to have a lower risk. CONCLUSION: Perforation rates are higher in teaching hospitals. More studies are needed to examine the difference and how to mitigate the risks.