Effects of hospital volume on long-term outcomes after percutaneous transluminal coronary angioplasty after acute myocardial infarction

Background Volume of procedures has been associated with short-term outcome after percutaneous transluminal coronary angioplasty. However, the effect of hospital procedural volume on long-term outcome after PTCA is unknown. Methods and Results We analyzed the physician claims and discharge data of 6635 patients who underwent PTCA after acute myocardial infarction (AMI) between 1991 and 1995 in the province of Quebec, Canada. For each administrative year, hospitals in which PTCA was performed were classified into 3 groups: low-volume, <200 procedures per year; medium-volume, 200 to 399 procedures per year; and high-volume, ≥400 procedures per year. Compared with patients in medium-volume and high-volume hospitals, patients in low-volume hospitals were older, had more recent AMI, and were less likely to have been transferred for PTCA. After adjustment for baseline differences, patients in the low-volume and medium-volume groups were more likely to undergo CABG within 6 months compared with patients in the high-volume group (odds ratio [OR] 2.1, 95% CI 1.3-3.3, and OR 1.5, 95% CI 1.2-1.9, respectively). In contrast, patients in the low-volume and medium-volume groups were less likely than patients in the high-volume group to undergo repeat PTCA within 6 months (OR 0.37, 95% CI 0.24-0.58, and OR 0.8, 95% CI 0.70-0.92, respectively). At 6 months, adjusted rates of repeat revascularization, recurrent AMI, or death did not differ between the 3 groups. Conclusion Overall adverse event rates at 6 months after PTCA do not differ between hospital volume groups. The higher rate of CABG in low-volume hospitals and the higher rate of repeat PTCA in high-volume hospitals may represent different physician preferences for the treatment of failed PTCA rather than higher complication rates. (Am Heart J 2002;144:144-50.)     

Relation of race, ethnicity and cardiac surgeons to operative mortality rates in primary coronary artery bypass grafting in California

The aim of this study was to evaluate whether African American, Hispanic, and Asian patients in California were more likely to undergo coronary artery bypass grafting (CABG) by cardiac surgeons with higher risk-adjusted mortality rates (RAMRs). Clinical data from the California CABG Outcomes Reporting Program were analyzed for all patients who underwent isolated CABG from 2003 to 2006 by surgeons who performed ≥ 10 operations. Surgeons were divided into quintiles on the basis of their RAMRs, with the top-performing surgeons in the first quintile and the lowest performing surgeons in the fifth quintile. There were 72,845 isolated CABG procedures performed by 303 surgeons, including 49,886 in white, 9,380 in Hispanic, 6,867 in Asian, and 2,750 in African American patients. African American and Asian patients underwent CABG by surgeons with higher mean RAMRs (2.90% and 2.99%, respectively) compared with the state average of 2.65% (p <0.001). Compared to white patients, Asian and Hispanic patients were more likely to be treated by surgeons in the lowest quintile (odds ratio [OR] 1.2, 95% confidence interval [CI] 1.11 to 1.3, and OR 1.38, 95% CI 1.30 to 1.48, respectively). African Americans and Hispanics were less likely to be operated on by surgeons in the top quintile compared to white patients (OR 0.80, 95% CI 0.71 to 0.90, and OR 0.81, 95% CI 0.76 to 0.87, respectively). Hispanics were less likely to be treated by surgeons in the top quintile than by surgeons in the lowest quintile (OR 0.65, 95% CI 0.60 to 0.75). In conclusion, racial and ethnic minority patients who undergo isolated CABG in California may be more likely to be operated on by cardiac surgeons with higher RAMRs.     

Impact of Hospital Procedural Volume on Outcomes After Endovascular Revascularization for Critical Limb Ischemia

ObjectivesThe aim of this study was to evaluate the interaction between hospital endovascular lower extremity revascularization (eLER) volume and outcomes after eLER for critical limb ischemia (CLI).BackgroundThere is a paucity of data on the relationship between hospital procedural volume and outcomes of eLER for CLI.MethodsThe authors queried the Nationwide Readmission Database (2013-2015) for hospitalized patients who underwent eLER for CLI. Hospitals were divided into tertiles according to annual eLER volume: low volume (<100 eLER procedures), moderate volume (100-550 eLER procedures), and high volume (>550 eLER procedures). Stepwise multivariable regression models were used. The main outcomes were in-hospital mortality and 30-day readmission with major adverse limb events, defined as the composite of amputation, acute limb ischemia, or repeat revascularization.ResultsAmong 145,785 hospitalizations for eLER for CLI, 5,199 (3.6%) were at low-volume eLER hospitals, 27,857 (19.1%) at moderate-volume eLER hospitals, and 112,728 (77.3%) at high-volume eLER hospitals. On multivariable analysis, there was no difference with regard to in-hospital mortality among moderate-volume hospitals (adjusted odds ratio [OR]: 0.78; 95% CI: 0.60-1.01) and high-volume hospitals (adjusted OR: 0.84; 95% CI: 0.64-1.05) compared with low-volume hospitals. There was lower risk of in-hospital major amputation (adjusted OR: 0.82; 95% CI: 0.70-0.96) and minor amputation at high- versus low-volume hospitals. The length of hospital stay was shorter and discharges to nursing facilities were fewer among moderate- and high-volume hospitals compared with low-volume hospitals. Compared with low-volume hospitals, eLER for CLI at high-volume hospitals had a lower risk for 30-day readmission with major adverse limb events (adjusted OR: 0.83; 95% CI: 0.70-0.99), while there was no difference among moderate-volume hospitals (adjusted OR: 0.92; 95% CI: 0.77-1.10).ConclusionsThis nationwide observational analysis suggests that annual eLER volume does not influence in-hospital mortality after eLER for CLI. However, high eLER volume (>550 eLER procedures) was associated with better rates of limb preservation after eLER for CLI.     

Racial differences in the use of invasive cardiovascular procedures: review of the literature and prescription for future research

PURPOSE: The cause of racial disparities in the use of invasive cardiac procedures remains unclear. To summarize, evaluate, and clarify gaps in the literature, studies examining racial differences in cardiac catheterization, percutaneous transluminal coronary angioplasty (PTCA), and coronary artery bypass grafting (CABG) were reviewed. DATA SOURCES: MEDLINE search for English-language articles published from 1966 to May 2000. STUDY SELECTION: Empirical studies of adults. DATA EXTRACTION: The odds ratios for procedure use by race were examined for each study; cohorts and covariates were also documented. DATA SYNTHESIS: Literature was classified as one of three groups on the basis of study design. For the first group, which used administrative data, odds ratios (ORs) for African-American patients compared with white patients ranged from 0.41 to 0.94 for cardiac catheterization, from 0.32 to 0.80 for PTCA, and from 0.23 to 0.68 for CABG. Procedure rates were also lower for Hispanic and Asian patients. In the second group, which used detailed clinical data, African-American patients remained disproportionately less likely to receive cardiac catheterization (OR, 0.03 to 0.85), PTCA (OR, 0.20 to 0.87), and CABG (OR, 0.22 to 0.68). A few studies noted that Hispanic and Asian patients were also disproportionately less likely to receive such procedures. The third group used survey methods but found conflicting results regarding patient refusals as a source of racial variation. Less-educated patients and patients who were not as experienced with the procedure were more likely to decline PTCA. Physician bias was also associated with racial variation in recommendations for treatment. CONCLUSIONS: Racial differences in invasive cardiac procedure use were found even after adjustment for disease severity. Future studies should comprehensively and simultaneously examine the full range of patient, physician, and health care system variables related to racial differences in the provision of invasive cardiac procedures.     

The relation between surgeon volume and outcome following off-pump vs on-pump coronary artery bypass graft surgery

STUDY OBJECTIVE: Off-pump coronary artery bypass graft (CABG) surgery has been recently reintroduced into clinical practice. In light of the relatively low level of experience of most cardiac surgeons with off-pump CABG surgery, and the exceptional technical challenge of working on a "beating heart," off-pump CABG surgery presents a unique opportunity to explore the effect of surgeon case volume on surgical outcome after controlling for the effects of patient case mix and hospital volume. DESIGN: A retrospective cohort study analyzing the association between surgeon volume and in-hospital mortality rate for off-pump and on-pump CABG surgery using random-effects logistic regression modeling. SETTING AND PATIENTS: The analyses were based on the New York State clinical CABG surgery registry. The study sample consisted of 36,930 patients undergoing isolated CABG surgery between 1998 and 1999 that was performed by 181 surgeons at 33 hospitals. INTERVENTIONS: None. RESULTS: There is no association between the number of CABG procedures performed off-pump by an individual surgeon and in-hospital mortality rates (p = 0.93) after controlling for hospital CABG surgery volume and patient-level risk factors. There is also no association between the off-pump CABG surgery mortality rate and the total number of both off-pump and on-pump CABG surgery cases (p = 0.78). In the on-pump CABG surgery cohort, surgeons performing a high volume of CABG procedures had significantly lower risk-adjusted mortality rates among their patients compared to those performing a very low volume, a low-volume, and a medium volume of CABG procedures (p < 0.006). CONCLUSION: For off-pump CABG surgery, surgeons performing a high volume of procedures do not have better mortality outcomes than those performing a low volume of procedures. However, higher surgeon case volumes are associated with lower mortality rates for on-pump CABG surgery. The absence of a volume-outcome association for off-pump CABG surgery is especially surprising in light of the more technically demanding nature of off-pump CABG surgery compared to on-pump CABG surgery.     

Hospital volume-outcome relationships among medical admissions to ICUs

BACKGROUND: Positive relationships between hospital volume and outcomes have been demonstrated for several surgeries and medical conditions. However, little is known about the volume-outcome relationship in patients admitted to medical ICUs. OBJECTIVE: To determine the relationship between hospital volume and risk-adjusted in-hospital mortality for patients admitted to ICUs with respiratory, neurologic, and GI disorders. DESIGN: Retrospective cohort study. SETTING: Twenty-nine hospitals in a single metropolitan area. PATIENTS: Adult ICU admissions from 1991 through 1997. METHODS: Using Cox proportional hazards models, we compared in-hospital mortality between tertiles of hospital volume (high, medium, and low) for respiratory (n = 16,949), neurologic (n = 13,805), and GI (n = 12,881) diseases after adjusting for age, gender, admission severity of illness, admitting diagnosis, and source. Severity of illness was measured using the APACHE (acute physiology and chronic health evaluation) III methodology. RESULTS: Among respiratory and neurologic ICU admissions, hazard ratios were similar (p > or = 0.05) in patients in low-, medium-, and high-volume hospitals. However, among GI diagnoses, risk of mortality was lower in high-volume hospitals, relative to low-volume hospitals (hazard ratio, 0.68; 95% confidence interval [CI], 0.54 to 0.85; p < 0.001), and was somewhat lower in medium-volume hospitals (hazard ratio, 0.83; 95% CI, 0.68 to 1.01; p = 0.06). Among subgroups based on severity of illness, high-volume hospitals had lower mortality, relative to low-volume hospitals, among sicker patients (APACHE III score > 57) in the respiratory cohort (hazard ratio, 0.77; 95% CI, 0.59 to 0.99) and the GI cohort (hazard ratio, 0.67; 95% CI, 0.53 to 0.85). CONCLUSIONS: Associations between ICU volume and risk-adjusted mortality were significant for patients with GI diagnoses and for sicker patients with respiratory diagnoses. However, associations were not significant for patients with neurologic diagnoses. The lack of a consistent volume-outcome relationship may reflect unmeasured patient complexity in higher-volume hospitals, relative standardization of care across ICUs, or lack of efficacy of some accepted ICU processes of care.     

Appropriateness of invasive cardiovascular interventions in German hospitals (2000-2001): an evaluation using the RAND appropriateness criteria

OBJECTIVE: Germany has the highest per capita rate of percutaneous transluminal coronary angioplasties (PTCAs) in Europe and the third highest per capita rate of heart surgeries requiring a heart-lung machine. The goal of this study was to evaluate the appropriateness of PTCA, coronary artery bypass graft (CABG), and carotid endarterectomy (CEA) in German hospitals using RAND appropriateness criteria. METHODS: A retrospective study in 121 randomly selected German hospitals (52 % of all hospitals contacted) was performed from December 2000 to August 2001. A total of 361 patients were enrolled providing information on the appropriateness of 128 PTCAs, 92 CABGs, and 141 CEAs. RESULTS: Inappropriateness rates were 2 % (95 % CI 0 - 5 %), 4 % (95 % CI 1 - 9 %), and 3 % (95 % CI 1 - 7 %) for PTCA, CABG, and CEA, respectively. The overall rate of uncertain procedures was 42 % (95 % CI 36 - 47 %). Only 38 % (95 % CI 32 - 45 %) of patients who received a coronary intervention had had a pre-interventional stress test. CONCLUSIONS: The study yielded little overt overuse in the performance of PTCAs, CABGs, and CEAs, but potentially large underuse of stress tests. Despite a high per capita rate of invasive cardiovascular interventions in Germany, the rate of inappropriate procedures was not larger than in other countries.     

Impact of patient risk on the hospital volume-outcome relationship in coronary artery bypass grafting

BACKGROUND: The impact of surgical risk on the relationship between hospital volume and outcomes in coronary artery bypass grafting (CABG) is uncertain. We assessed (1) whether in-hospital mortality rates differ across lower- and higher-volume hospitals by expected surgical risk and (2) whether high-risk patients are more likely to undergo CABG at low-volume centers. METHODS: We used clinical data on 27,355 adults who underwent CABG at 68 hospitals in California between 1997 and 1998. Hospitals were divided into low-volume (n=44), medium-volume (n=19), and high-volume (n=5) categories on the basis of tertiles of annual CABG volume. Using hierarchical logistic regression and log-binomial regression models, we assessed for differences in in-hospital mortality rates across hospital volume categories and the likelihood of CABG being performed in each hospital volume category after adjusting for expected surgical risk. RESULTS: Differences in adjusted in-hospital mortality rates between low- and high-volume centers rose as the expected risk of in-hospital death increased: 0.8% vs 0.4% at the 20th risk percentile and 3.8% vs 2.5% at the 80th risk percentile (P<.001 for all comparisons). While a similar trend was seen between medium- and high-volume centers, absolute differences were substantially smaller. The likelihood of patients having surgery at a low-volume center also rose significantly with expected surgical risk (relative risk of undergoing CABG at a low-volume center for patients at 80th vs 20th risk percentile, 1.29 [95% confidence interval, 1.14-1.51; P<.001]). CONCLUSION: High-risk patients are more likely to undergo CABG at low-volume facilities where their risk of dying is higher.     

Hospital percutaneous coronary intervention volume and patient mortality, 1998 to 2000: does the evidence support current procedure volume minimums?

OBJECTIVES: The aim of this study was to evaluate current American College of Cardiology/American Heart Association (ACC/AHA) hospital percutaneous coronary intervention (PCI) volume minimum recommendations. BACKGROUND: In order to reduce procedure-associated mortality, ACC/AHA guidelines recommend that hospitals offering PCIs perform at least 400 PCIs annually. It is unclear whether this volume standard applies to current practice. METHODS: We conducted a retrospective analysis of the Agency for Healthcare Research and Quality's Nationwide In-patient Sample hospital discharge database to evaluate in-hospital mortality among patients (n = 362748) who underwent PCI between 1998 and 2000 at low (5 to 199 cases/year), medium (200 to 399 cases/year), high (400 to 999 cases/year), and very high (1000 cases or more/year) PCI volume hospitals. RESULTS: Crude in-hospital mortality rates were 2.56% in low-volume hospitals, 1.83% in medium-volume hospitals, 1.64% in high-volume hospitals, and 1.36% in very high-volume hospitals (p < 0.001 for trend). Compared with patients treated in high-volume hospitals (odds ratio [OR] 1.00, referent), patients treated in low-volume hospitals remained at increased risk for mortality after adjustment for patient characteristics (OR 1.21, 95% confidence interval [CI] 1.06 to 1.28). However, patients treated in medium-volume hospitals (OR 1.02, 95% CI 0.92 to 1.14) and patients treated in very high-volume hospitals (OR 0.94, 95% CI 0.85 to 1.03) had a comparable risk of mortality. Findings were similar when high- and very high-volume hospitals were pooled together. CONCLUSIONS: We found no evidence of higher in-hospital mortality in patients undergoing PCI at medium-volume hospitals compared with patients treated at hospitals with annual PCI volumes of 400 cases of more, suggesting current ACC/AHA PCI hospital volume minimums may merit reevaluation.     

Differences in mortality among patients with community-acquired pneumonia in California by ethnicity and hospital characteristics

PURPOSE: To determine ethnic disparities in mortality for patients with community-acquired pneumonia, and the potential effects of hospital characteristics on disparities, we compared the risk-adjusted mortality of white, African American, Hispanic, and Asian American patients hospitalized for community-acquired pneumonia. METHODS: We studied patients discharged with community-acquired pneumonia in 1996 from an acute care hospital in California (n = 54,874). Logistic regression models were used to examine the association between ethnicity and hospital characteristics and 30-day mortality after adjusting for clinical characteristics. RESULTS: The overall 30-day mortality was 12.2%. After adjustment for demographic, clinical, and hospital characteristics, Hispanic (odds ratio [OR] = 0.81; 95% confidence interval [CI]: 0.73 to 0.90) and Asian American patients (OR = 0.88; 95% CI: 0.77 to 1.00) had lower mortality than did white patients, whereas African Americans had a similar mortality to whites (OR = 0.93; 95% CI: 0.83 to 1.06). There were no overall differences in mortality by hospital characteristics (i.e., teaching status, rural location, and public or district hospital). CONCLUSION: Hispanics and Asian Americans have a lower risk of death from community-acquired pneumonia than whites in California. No overall differences in mortality were observed by hospital characteristics.     

Is the volume-outcome relation still an issue in the era of PCI with systematic stenting? Results of the greater Paris area PCI registry.

AIMS: In acute myocardial infarction (AMI), primary percutaneous transluminal angioplasty (PTCA) is the preferred option when it can be performed rapidly. Because of the limited access to high PTCA volume centres in some areas, it has been suggested that PTCA could be performed in low-volume centres on AMI patients. Little data exist on the validity of this strategy in modern era PTCA. METHODS AND RESULTS: The Greater Paris area comprises 11 million inhabitants and accounts for 18% of the French population. In 2001, the hospital agency of the Greater Paris area set up a registry of all PTCAs performed in this region. Data from 2001 and 2002 was analysed. Hospitals performing <400 PTCAs per year were classified as low-volume. A case-control analysis (propensity score) compared in-hospital mortality in low- and high-volume centres. A total of 37 848 angioplasty procedures were performed in 44 centres during the study period; 24.7% were performed in low-volume centres. A non-statistically significant trend towards reduced in-hospital mortality was noted in high-volume centres as opposed to low-volume centres: 2.01 vs. 2.42%, P = 0.057. In-hospital mortality rates were significantly different in the sub-group of emergency procedures: 6.75% in high- vs. 8.54% in low-volume centres, P = 0.028. No difference was noted between low- and high-volume centres in non-emergency procedures (0.62 vs. 0.62%, P = 0.99). CONCLUSION: In the era of modern stenting, a clear inverse relationship exists between hospital PTCA volume and in-hospital mortality after emergency procedures. Tolerance of low-volume thresholds for angioplasty centres with the purpose of providing primary PTCA in AMI should not be recommended, even in underserved areas.     

Differential use of coronary revascularization and hospital mortality following acute myocardial infarction

BACKGROUND: The effect of racial/ethnic disparity in the use of cardiac procedures on short-term outcomes, such as hospital mortality, is limited. We sought to determine the association of revascularization procedures (percutaneous transluminal coronary angioplasty or coronary artery bypass graft) to hospital mortality in non-Hispanic black and white patients and Hispanic patients with acute myocardial infarction. METHODS: Analysis of the New York State Department of Health Statewide Planning and Research Cooperate System (SPARCS) data for 12 555 patients admitted to New York City hospitals with acute myocardial infarction in 1996. Revascularization procedure frequencies and adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for hospital mortality were calculated. RESULTS: Whites were older than Hispanics and blacks (mean +/- SD age, 70 +/- 13.3 vs 64 +/- 13.3 and 64 +/- 12.9 years, respectively; P<.001) and more likely to have heart failure (36.3% vs 29.1% and 29.6%, respectively; P<.001). Blacks were least likely to be revascularized compared with Hispanics and whites (15.8% vs 25.8% and 25.2%, respectively; P<.001). Hispanics were more likely to survive than whites (adjusted OR, 0.73 [95% CI, 0.59-0.91]); this difference was not significant for blacks (adjusted OR, 0.83 [95% CI, 0.69-1.00]). Nonrevascularized blacks and Hispanics were more likely to be discharged alive than nonrevascularized whites (OR, 0.80 [95% CI, 0.66-0.98] for blacks; OR, 0.74 [95% CI, 0.59-0.93] for Hispanics). There were no significant racial/ethnic differences in hospital survival among revascularized patients. CONCLUSIONS: Nonclinical and clinical factors appear to account for blacks being least likely to have been revascularized. Despite these differences in revascularization rates, survival was similar for blacks and whites, whereas Hispanics were more likely to survive than whites.     

Trends in operator and hospital procedure volume and outcomes for percutaneous transluminal coronary angioplasty, 1996 to 2001

Although the volume/outcome relation for percutaneous transluminal coronary angioplasty (PTCA) is well established, it is unclear how the relation has changed over time. To examine trends in hospital and operator volume and outcomes for PTCA, we conducted a retrospective cohort study of discharge records of patients who underwent PTCA at nonfederal hospitals in Florida and New York from 1996 to 2001. Hospital/operator pairs were divided into 4 classes using American College of Cardiology/American Heart Association volume classifications. Outcome measurements were operator and hospital procedure volume and a combined end point of inpatient mortality and emergency coronary artery bypass graft surgery. Of 452,404 patients, the number of patients who underwent PTCA from 1996 to 2001 increased from 58,180 to 92,277, with a mean annual increase of 9.1%. The risk-adjusted end point of mortality and emergency coronary artery bypass grafting decreased over time, occurring in 2.8% of admissions in 1996 and in 1.6% of admissions in 2001. Class 1 hospital/operator pairs, which were operators performing >or=75 procedures at hospitals performing >400 procedures, had the lowest occurrence of the end point overall and in each year. The risk-adjusted end point difference between classes narrowed over time. In conclusion, outcomes were best for patients receiving care from class 1 hospital/operator pairs, and an increasing proportion of patients received care from class 1 pairs. There were outcome differences within subpopulations of operators in classes 2 and 4, which suggest possibilities for alternative volume classification guidelines.     

Racial/Ethnic Disparities in Post-acute Sequelae of SARS-CoV-2 Infection in New York: an EHR-Based Cohort Study from the RECOVER Program

BackgroundCompared to white individuals, Black and Hispanic individuals have higher rates of COVID-19 hospitalization and death. Less is known about racial/ethnic differences in post-acute sequelae of SARS-CoV-2 infection (PASC).ObjectiveExamine racial/ethnic differences in potential PASC symptoms and conditions among hospitalized and non-hospitalized COVID-19 patients.DesignRetrospective cohort study using data from electronic health records.Participants62,339 patients with COVID-19 and 247,881 patients without COVID-19 in New York City between March 2020 and October 2021.Main MeasuresNew symptoms and conditions 31–180 days after COVID-19 diagnosis.Key ResultsThe final study population included 29,331 white patients (47.1%), 12,638 Black patients (20.3%), and 20,370 Hispanic patients (32.7%) diagnosed with COVID-19. After adjusting for confounders, significant racial/ethnic differences in incident symptoms and conditions existed among both hospitalized and non-hospitalized patients. For example, 31–180 days after a positive SARS-CoV-2 test, hospitalized Black patients had higher odds of being diagnosed with diabetes (adjusted odds ratio [OR]: 1.96, 95% confidence interval [CI]: 1.50—2.56, q<0.001) and headaches (OR: 1.52, 95% CI: 1.11—2.08, q=0.02), compared to hospitalized white patients. Hospitalized Hispanic patients had higher odds of headaches (OR: 1.62, 95% CI: 1.21—2.17, q=0.003) and dyspnea (OR: 1.22, 95% CI: 1.05—1.42, q=0.02), compared to hospitalized white patients. Among non-hospitalized patients, Black patients had higher odds of being diagnosed with pulmonary embolism (OR: 1.68, 95% CI: 1.20—2.36, q=0.009) and diabetes (OR: 2.13, 95% CI: 1.75—2.58, q<0.001), but lower odds of encephalopathy (OR: 0.58, 95% CI: 0.45—0.75, q<0.001), compared to white patients. Hispanic patients had higher odds of being diagnosed with headaches (OR: 1.41, 95% CI: 1.24—1.60, q<0.001) and chest pain (OR: 1.50, 95% CI: 1.35—1.67, q < 0.001), but lower odds of encephalopathy (OR: 0.64, 95% CI: 0.51—0.80, q<0.001).ConclusionsCompared to white patients, patients from racial/ethnic minority groups had significantly different odds of developing potential PASC symptoms and conditions. Future research should examine the reasons for these differences.Supplementary InformationThe online version contains supplementary material available at 10.1007/s11606-022-07997-1.     

Clinical and nonclinical correlates of racial and ethnic differences in recommendation patterns for coronary revascularization

BACKGROUND: We sought to determine whether gender or racial differences exist in recommendations for coronary revascularization in a multiracial patient population undergoing their first coronary angiography at an academic institution from 1990-1993 for the evaluation of coronary artery disease (CAD). HYPOTHESIS: For patients with clinically significant CAD, no racial differences exist in the recommendation to revascularization following coronary angiography. METHODS: The main outcome measure was a recommendation for coronary revascularization such as percutaneous transluminal coronary angioplasty (PTCA) or coronary artery bypass graft (CABG) for patients with clinically significant CAD (n = 590). The primary multiple logistic regression analysis focused on only those patients with angiographically severe disease, defined as triple-vessel or left main CAD (n = 180). Race was trichotomized into Hispanic, black, and white to ascertain whether any differential effects of race/ethnicity existed while controlling for age, gender, ejection fraction, angina, diabetes, hypertension, and peripheral vascular disease. A medical record review for all patients with severe CAD, who were given a recommendation for medical therapy, was conducted to ascertain whether previously unmeasured clinical factors or nonclinical factors may have precluded a PTCA/CABG recommendation. RESULTS: Hispanics with severe disease were significantly less likely than whites to be given a recommendation for PTCA/CABG following angiography [odds ratio (OR) = 0.39; 95% confidence interval (CI) (0.17, 0.92)]. Blacks were 67% as likely as whites to be given such a recommendation [OR = 0.67; 95% CI (0.17, 2.71)]. Medical records, reviewed for 35 of 40 of these patients given a recommendation for medical therapy, revealed that 6 patients eventually had PTCA/CABG within 6 months due to precipitating ischemic events; 9 had such severe or diffuse disease that revascularization did not appear to be an alternative, and 2 patients opted for medical therapy. CONCLUSIONS: Racial differences were manifested in the recommendations made following angiography and may be explained by previously unmeasured clinical as well as nonclinical factors.     

Impact of race on health care utilization and outcomes in veterans with congestive heart failure

OBJECTIVES: The objectives of this study were to determine racial differences in mortality in a national cohort of patients hospitalized with congestive heart failure (CHF) within a financially "equal-access" healthcare system, the Veterans Health Administration (VA), and to examine racial differences in patterns of healthcare utilization following hospitalization. BACKGROUND: To explain the observed paradox of increased readmissions and lower mortality in black patients hospitalized with CHF, it has been postulated that black patients may have reduced access to outpatient care, resulting in a higher number of hospital admissions for lesser disease severity. METHODS: In a retrospective study of 4,901 black and 17,093 white veterans hospitalized with CHF in 153 VA hospitals, we evaluated mortality at 30 days and 2 years, and healthcare utilization in the year following discharge. RESULTS: The risk-adjusted odds ratios (OR) for 30-day and 2-year mortality in black versus white patients were 0.70 (95% confidence interval [CI] 0.60 to 0.82) and 0.84 (95% CI 0.78 to 0.91), respectively. In the year following discharge, blacks had the same rate of readmissions as whites. Blacks had a lower rate of medical outpatient clinic visits and a higher rate of urgent care/emergency room visits than whites, although these differences were small. CONCLUSIONS: In a system where there is equal access to healthcare, the racial gap in patterns of healthcare utilization is small. The observation of better survival in black patients after a CHF hospitalization is not readily explained by differences in healthcare utilization.     

The association between institutional primary angioplasty procedure volume and outcome in elderly Americans

BACKGROUND: The association between greater procedure volume and improved patient outcome in cardiac procedures has been established in percutaneous transluminal coronary angioplasty (PTCA), coronary stent placement and coronary bypass surgery. The association between primary angioplasty volume and outcome has not been evaluated. METHODS: We evaluated the association between the volume of primary angioplasty procedures with short- and long-term outcome in 6,124 patients with documented acute myocardial infarction. Patients without shock on presentation treated with primary coronary angioplasty within 12 hours of hospital admission were selected from consecutive infarct patients included in the Cooperative Cardiovascular Project database. Patients were divided into quartiles based on the volume of primary PTCA procedures performed at their admitting hospital. RESULTS: The majority of United States (US) hospitals performed less than three primary PTCA procedures per month. Patients admitted to hospitals in the lowest volume quartile of primary PTCA had 31% higher 30-day mortality than those admitted to the highest volume quartile. After adjustment for baseline differences in patient characteristics, there was an association between admission to higher volume primary PTCA hospitals and lower 30-day mortality (odds ratio per volume quartile = 0.91; 95% confidence interval = 0.83-0.99). CONCLUSION: Eighty-two percent of US hospitals perform less than three primary PTCA procedures per month. In elderly Americans treated with primary PTCA, we observed an association between admission to higher volume hospitals and lower short- and long-term mortality. This association was independent of total PTCA volumes.     

Coronary Revascularization and Cardiac Catheterization in the United States: Trends in Racial Differences

Objectives. We sought to determine whether racial differences in rates of coronary artery bypass graft surgery (CABG), percutaneous transluminal coronary angioplasty (PTCA) and cardiac catheterization decreased after 1980.

Background. Many reports of racial differences in utilization of CABG have been published since 1982. However, changes in the relative utilization of revascularization over time have received little attention.

Methods. Data from the National Hospital Discharge Survey were examined for the years 1980 through 1993. Estimated numbers of procedures performed in nonfederal U.S. hospitals were used to compute age-adjusted rates per 100,000 population by year and race for patients 35 to 84 years old.

Results. In patients 35 to 84 years old, the rate of CABG increased in blacks and whites between 1980 and 1993. Between 1986 and 1993, there was little change in the black/white ratio of age-adjusted rates (0.23 in 1980 through 1985 combined, 0.38 in 1986 and 0.43 in 1993). An apparent increase from 0.23 in 1980 through 1985 combined may have been due to sampling variation. Despite rapid increases in rates of PTCA in both races, no increase in the black/white ratio was noted (0.57 in 1993). However, the rate of inpatient cardiac catheterization increased more rapidly in blacks than in whites. This resulted in an increase in the black/white ratio of age-adjusted rates from 0.42 in 1980 to 0.91 in 1993.

Conclusions. Rates of CABG, cardiac catheterization and especially PTCA increased between 1980 and 1993, a period during which racial disparities in the procedures became widely known. Despite apparent increases in the black/white ratio for inpatient cardiac catheterization, large racial disparities in the utilization of CABG and PTCA persist and require further evaluation and possible intervention.

(J Am Coll Cardiol 1997;29:1557–62)     

Advance Care Planning and Treatment Intensity Before Death Among Black,Hispanic, and White Patients Hospitalized with COVID-19

BackgroundBlack and Hispanic people are more likely to contract COVID-19, require hospitalization, and die than White people due to differences in exposures, comorbidity risk, and healthcare access.ObjectiveTo examine the association of race and ethnicity with treatment decisions and intensity for patients hospitalized for COVID-19.DesignRetrospective cohort analysis of manually abstracted electronic medical records.Patients7,997 patients (62% non-Hispanic White, 16% non-Black Hispanic, and 23% Black) hospitalized for COVID-19 at 135 community hospitals between March and June 2020Main MeasuresAdvance care planning (ACP), do not resuscitate (DNR) orders, intensive care unit (ICU) admission, mechanical ventilation (MV), and in-hospital mortality. Among decedents, we classified the mode of death based on treatment intensity and code status as treatment limitation (no MV/DNR), treatment withdrawal (MV/DNR), maximal life support (MV/no DNR), or other (no MV/no DNR).Key ResultsAdjusted in-hospital mortality was similar between White (8%) and Black patients (9%, OR=1.1, 95% CI=0.9–1.4, p=0.254), and lower among Hispanic patients (6%, OR=0.7, 95% CI=0.6–1.0, p=0.032). Black and Hispanic patients were significantly more likely to be treated in the ICU (White 23%, Hispanic 27%, Black 28%) and to receive mechanical ventilation (White 12%, Hispanic 17%, Black 16%). The groups had similar rates of ACP (White 12%, Hispanic 12%, Black 11%), but Black and Hispanic patients were less likely to have a DNR order (White 13%, Hispanic 8%, Black 7%). Among decedents, there were significant differences in mode of death by race/ethnicity (treatment limitation: White 39%, Hispanic 17% (p=0.001), Black 18% (p<0.0001); treatment withdrawal: White 26%, Hispanic 43% (p=0.002), Black 28% (p=0.542); and maximal life support: White 21%, Hispanic 26% (p=0.308), Black 36% (p<0.0001)).ConclusionsHospitalized Black and Hispanic COVID-19 patients received greater treatment intensity than White patients. This may have simultaneously mitigated disparities in in-hospital mortality while increasing burdensome treatment near death.KEY WORDS: COVID-19, racial disparities, terminal care, mortality, intensive care unit, mechanical ventilation, do not resuscitate order, advance care planning, hospital medicine, medical decision-making     

The effect of race on coronary bypass operative mortality

OBJECTIVES: The study was done to determine whether race is an independent predictor of operative mortality after coronary artery bypass graft (CABG) surgery. BACKGROUND: Blacks are less frequently referred for cardiac catheterization and CABG than are whites. Few reports have investigated the relative fate of patients who undergo CABG as a function of race. METHODS: The Society of Thoracic Surgeons National Database was used to retrospectively review 25,850 black and 555,939 white patients who underwent CABG-alone from 1994 through 1997. A multivariate logistic regression model was developed to determine whether race affected risk-adjusted operative mortality. RESULTS: Operative mortality was 3.83% for blacks versus 3.14% for whites (unadjusted black/white odds ratio [OR] 1.23 [1.15-1.31]). Blacks were younger, more likely female, hypertensive, diabetic and in heart failure. Nonetheless, the influence of these and other preoperative risk factors on procedural mortality was quite similar in black and white patients. After controlling for all risk factors, race remained a significant independent predictor of mortality in the multivariate logistic model (adjusted black/white OR 1.29 [1.21, 1.38]). Proportionately, these differences were greatest among lower-risk patients. The race-by-gender interaction was significant (p<0.05). The unadjusted mortality for black men, 3.30% and white men, 2.64% differed significantly (p<0.05), whereas for women there was no difference (black, 4.49%; white 4.41%). CONCLUSIONS: Black race is an independent predictor of operative mortality after CABG except for very high-risk patients. The difference in mortality is greatest for male patients and, though statistically significant, is small in absolute terms. Therefore, patients should be referred for CABG based on clinical characteristics irrespective of race.