Low Socioeconomic Status is an Independent Risk Factor for Survival After Abdominal Aortic Aneurysm Repair and Open Surgery for Peripheral Artery Disease

Socioeconomic and regional variations in repair modality for ruptured abdominal aortic aneurysms

BACKGROUND

Previous studies report that patients of racial/ethnic minorities more frequently present with ruptured abdominal aortic aneurysms (rAAAs) than their counterparts. The distribution of rAAA treatment modality, whether open aneurysm repair (OAR) or endovascular aneurysm repair (EVAR), by race/ethnicity classification remains uncertain. This study aims to investigate disparities, as represented by race/ethnic classification, median income, and insurance status, in the management of rAAA in a national cohort.

METHODS

We conducted a retrospective analysis of patients admitted with rAAA managed with either OAR or EVAR from 2002 to 2020 using the National Inpatient Sample, comparing repair type by race/ethnicity group. Multilevel mixed effects logistic regression models, adjusted for patient- and system-level factors, were used to calculate difference in use of OAR or EVAR dependent on race/ethnicity classification.

RESULTS

We identified 10,788 admissions for rAAA repairs, of which 9506 (88.1%) were White, 605 (5.6%) were Black, 424 (3.9%) were Hispanic, and 253 (2.4%) were Asian/Native American. Asians/Native Americans underwent the highest frequency of OAR as compared with EVAR (61.7% vs 38.3%). In the adjusted model, there was no statistically significant difference in the use of OAR vs EVAR by race/ethnicity classification. In total, primary payer and median income were also not statistically significant predictors of AAA treatment modality.

CONCLUSIONS

Our study found no statistical evidence of disparities with respect to race, insurance, or median income and use of OAR or EVAR for the management of rAAA.

The contribution of household income to rectal cancer patient characteristics, treatment, and outcomes from 2010 to 2020

Background

There is a paucity of recent literature investigating the sole effect of income level on the treatment and survival of patients with rectal cancer.

Methods

We analyzed all cases of rectal cancer in the Rectal Cancer PUF of the NCDB from 2010 to 2020. We utilized the Median Income Quartiles 2016-2020 to define our income levels. The two lower quartiles were combined to create a lower income group, with the upper two quartiles creating the higher income group. The total cohort included 201,329 patients, with 116,843 and 84,486 in the higher and lower income groups, respectively.

Results

Lower income patients were more often black (17 % vs 6 %), lived farther from the nearest hospital (33.5 miles vs 25.7 miles) despite being more likely to live in urban areas (25 % vs 7 %), and had lower levels of private insurance (36 % vs 49 %). They underwent more APRs (17 % vs 14 %) and had a 13 % higher chance of undergoing an open operation (OR 1.13, CI 1.09-1.17). Higher income patients had a 12 % reduction in 90-day (OR 0.88, 95 % CI 0.82-0.96) and overall mortality (OR 0.88, 95 % CI 0.86-0.89).

Conclusions

Clinicians should be aware that lower income patients are often faced with unique challenges that may impact care delivery.

Psychosocial and socioeconomic factors are most predictive of health status in patients with claudication

BACKGROUND

As a key treatment goal for patients with symptomatic peripheral artery disease (PAD), improving health status has also become an important end point for clinical trials and performance-based care. An understanding of patient factors associated with 1-year PAD health status is lacking in patients with PAD.

METHODS

The health status of 1073 consecutive patients with symptomatic PAD in the international multicenter PORTRAIT (Patient-Centered Outcomes Related to Treatment Practices in Peripheral Arterial Disease: Investigating Trajectories) registry was measured at baseline and 1 year with the Peripheral Artery Questionnaire (PAQ). The association of 47 patient characteristics with 1-year PAQ scores was assessed using a random forest algorithm. Variables of clinical significance were retained and included in a hierarchical multivariable linear regression model predicting 1-year PAQ summary scores.

RESULTS

The mean age of patients was 67.7 ± 9.3 years, and 37% were female. Variables with the highest importance ranking in predicting 1-year PAQ summary score were baseline PAQ summary score, Patient Health Questionnaire-8 depression score, Generalized Anxiety Disorder-2 anxiety score, new onset symptom presentation, insurance status, current or prior diagnosis of depression, low social support, initial invasive treatment, duration of symptoms, and race. The addition of 19 clinical variables in an extended model marginally improved the explained variance in 1-year health status (from R2 0.312 to 0.335).

CONCLUSIONS

Patients' 1-year PAD-specific health status, as measured by the PAQ, can be predicted from 10 mostly psychosocial and socioeconomic patient characteristics including depression, anxiety, insurance status, social support, and symptoms. These characteristics should be validated and tested in other PAD cohorts so that this model can inform risk adjustment and prediction of PAD health status in comparative effectiveness research and performance-based care.

Living in high-poverty areas is associated with reduced survival in patients with thoracoabdominal aortic aneurysms

OBJECTIVES

Studies have demonstrated that socioeconomic status, insurance, race, and distance impact clinical outcomes in patients with abdominal aortic aneurysms. The purpose of this study was to assess if these factors also impact clinical outcomes in patients with thoracoabdominal aortic aneurysms (TAAAs).

METHODS

We conducted a retrospective review of patients with TAAAs confirmed by computed tomography imaging between 2009 and 2019 at a single institution. Patients' zip codes were mapped to American Community Survey Data to obtain geographic poverty rates. We used the standard U.S. Census definition of high-poverty concentration as >20% of the population living at 100% of the poverty rate. Our primary outcome was overall survival, stratified by whether the patient underwent repair.

RESULTS

Of 578 patients, 575 had zip code data and were analyzed. In both the nonoperative (N = 268) and operative (N = 307) groups, there were no significant differences in age, race, comorbidities, clinical urgency, surgery utilization, or surgery modality between patients living in high-poverty areas (N = 95, 16.4%) vs not. In the nonoperative group, patients from high-poverty areas were more likely to have aneurysm due to dissection (37.5% vs 17.6%, P = .03). In multivariate analyses, patients from high-poverty zip codes had significantly worse nonoperative survival (hazard ratio [HR]: 1.9, 95% confidence interval [CI]: 1.1-3.3, P = .03). In the repair group, high poverty was also a significant predictor of reduced postoperative survival (HR: 1.65, 95% CI: 1-2.63, P = .04). Adding the Gagne Index, these differences persisted in both groups (nonoperative: HR: 1.93, 95% CI: 1.01-3.70, P = .05; operative: HR: 1.62, 95% CI: 1.03-2.56, P = .04). In Kaplan-Meier analysis, the difference in postoperative survival began approximately 1.5 years after repair. Private insurance was predictive of improved postoperative survival (HR: 0.42, 95% CI: 0.18-0.95, P = .04) but reduced nonoperative survival (HR: 2.05, 95% 1.01-4.14, P = .04). Data were insufficient to determine if race impacted survival discretely from poverty status. These results were found after adjusting for age, race, sex, maximum aortic diameter, coronary artery disease, distance from the hospital, insurance, and active smoking. Interestingly, in multivariate regression, traveling greater than 100 miles was correlated with increased surgery utilization (odds ratio: 1.58, 95% CI: 1.08-2.33, P = .02) and long-term survival (HR: 0.61, 95% CI: 0.41-0.92, P = .02).

CONCLUSIONS

Patients with TAAAs living in high-poverty areas had significantly more dissections and suffered a nearly doubled risk of mortality compared with patients living outside such areas. These data suggest that these disparities are attributed to the overall impacts of poverty and highlight the pressing need for research into TAAA disparities.

Impact of Community Socioeconomic Distress on Survival Following Heart Transplantation

OBJECTIVE

The aim of this study was to assess the impact of community-level socioeconomic deprivation on survival outcomes following heart transplantation.

BACKGROUND

Despite growing awareness of socioeconomic disparities in the US health care system, significant inequities in outcomes remain. While recent literature has increasingly considered the effects of structural socioeconomic deprivation, the impact of community socioeconomic distress on outcomes following heart transplantation has not yet been elucidated.

METHODS

All adult heart transplant recipients from 2004 to 2022 were ascertained from the Organ Procurement and Transplantation Network. Community socioeconomic distress was assessed using the previously validated Distressed Communities Index, a metric that represents education level, housing vacancies, unemployment, poverty rate, median household income, and business growth by zip code. Communities in the highest quintile were considered the Distressed cohort (others: Non-Distressed ). Outcomes were considered across 2 eras (2004-2018 and 2019-2022) to account for the 2018 UNOS Policy Change. Three- and 5-year patient and graft survival were assessed using Kaplan-Meier and Cox proportional hazards models.

RESULTS

Of 36,777 heart transplants, 7450 (20%) were considered distressed . Following adjustment, distressed recipients demonstrated a greater hazard of 5-year mortality from 2004 to 2018 [hazard ratio (HR)=1.10, 95% confidence interval (CI): 1.03-1.18; P =0.005] and 3-year mortality from 2019 to 2022 (HR=1.29, 95% CI: 1.10-1.51; P =0.002), relative to nondistressed . Similarly, the distressed group was associated with increased hazard of graft failure at 5 years from 2004 to 2018 (HR=1.10, 95% CI: 1.03-1.18; P =0.003) and at 3 years from 2019 to 2022 (HR=1.31, 95% CI: 1.11-1.53; P =0.001).

CONCLUSIONS

Community-level socioeconomic deprivation is linked with inferior patient and graft survival following heart transplantation. Future interventions are needed to address pervasive socioeconomic inequities in transplantation outcomes.

Socioeconomic status is not associated with unfavorable outcomes in patients with acute limb ischemia

OBJECTIVE

Whether socioeconomic status (SES) is associated with health outcomes in patients with acute limb ischemia (ALI) is largely unknown. We aimed to determine whether SES is associated with worse presentations and outcomes for patients with ALI.

METHODS

We performed a retrospective medical record review of patients who presented with ALI between April 2016 and October 2020 at a single tertiary care center. SES was quantified using individual variables (median household income, level of education, and employment) and a composite endpoint, the neighborhood deprivation index (NDI). The NDI is a standardized and reproducible index that uses census tract data (higher number indicates lower SES status). The NDI summarizes 8 domains of socioeconomic deprivation. ALI severity was categorized using the Rutherford classification. The association between SES and the severity of ALI at presentation and between SES and other health outcomes were analyzed using bivariate analysis of variance, independent t test, and multivariate logistic regression.

RESULTS

During the study period, 278 patients were treated for ALI, of whom 211 had complete SES data available. The mean age was 64 years, 55% were men, and 57% were White. The Rutherford classification of disease severity was grade 1, 2a, 2b, and 3 for 6%, 54%, 32%, and 8% of patients, respectively. Patients with a low SES status per the NDI were more likely to have a history of peripheral arterial disease and chronic kidney disease at presentation. The ALI etiology (thrombotic vs embolic) was not associated with SES. No significant differences were seen between SES and the severity of ALI at presentation (p = 0.96) or the treatment modality (p = 0.80). No associations between SES and 30-day or 1-year mortality were observed (mean NDI, 0.15 vs 0.26, p = 0.58, and 0.20 vs 0.26, p = 0.71, respectively) or between SES and 30-day or 1-year limb loss (mean NDI, 0.06 vs 0.30, p = 0.18, and 0.1 vs 0.32, p = 0.17, respectively). Lower SES (higher NDI) was associated with increased 30-day readmission (mean NDI, 0.49 vs 0.15, p = 0.021). However, this association was not significant on multivariate analysis (odds ratio 1.4, 95% CI 0.9-2.1, p = 0.06).

CONCLUSIONS

SES was not associated with the severity of ALI at patient presentation. Although SES was associated with the presence of peripheral arterial disease and chronic kidney disease at presentation, SES was not a predictor of short-term or 1-year limb loss and mortality. Overall, ALI presentation and treatment outcomes were independent of SES.

Multimodal Prehabilitation for Patients Undergoing Endovascular Aortic Aneurysm Repair Surgery: A Feasibility Study

BACKGROUND

Elective treatment options for aortic abdominal aneurysms include open repair or the less-invasive endovascular aortic aneurysm repair (EVAR). Recovery from EVAR is generally considered easier and faster than open repair. Despite this, EVAR remains a major procedure, and average return to preoperative quality of life is at least 3 months. The purpose of this study is to determine the safety and feasibility of multimodal prehabilitation, a multidisciplinary preoperative optimization intervention, in patients undergoing EVAR and its impact on perioperative functional capacity and quality of life.

METHODS

Candidates for EVAR with an infra-renal abdominal aortic aneurysm <7.5cm were invited to participate in a 6-week multimodal prehabilitation program that included (1) supervised and home-based exercise, (2) nutritional support, (3) psychosocial support, and (4) smoking cessation. Functional capacity and quality of life were assessed at baseline, before surgery and 6 weeks postoperatively. Recruitment rate, safety, and compliance were also assessed.

RESULTS

A total of 24 patients were included, 17 males (70%) and 7 females (30%). No adverse events occurred during the program. Compliance to each component of the program (median [Q1-Q3]) was 66% [67] for supervised training, 100% [67] for home-based training, and 100% [100] for nutrition. The multimodal prehabilitation program elicited a significant increase in functional capacity and quality of life preoperatively.

CONCLUSION

Multimodal prehabilitation for patients awaiting EVAR is feasible and safe. Multimodal prehabilitation improves both functional capacity and quality of life preoperatively. Further research is needed to assess the impact of multimodal prehabilitation on postoperative quality of life and functional capacity.

CLINICAL IMPACT

Multimodal prehabilitation is safe and feasible in patients awaiting endovascular aneurysm repair. The importance of this finding is that multimodal prehabilitation can be safely delivered preoperatively in patients awaiting EVAR. Although further research is needed, multimodal prehabilitation seems to improve preoperative functional capacity and quality of life. This could have an impact for the future implementation of prehabilitation interventions in order to increase functional reserve and quality of life preoperatively so that this high-risk population can cope better with the surgical stress and return to their normal life faster postoperatively.

Outcomes after ischemic stroke for dual-eligible Medicare-Medicaid beneficiaries in the United States

BACKGROUND

Medicaid serves as a safety net for low-income US Medicare beneficiaries with limited assets. Approximately 7.7 million Americans aged ≥65 years rely on a combination of Medicare and Medicaid to obtain critical medical services, yet little is known about whether these patients have worse outcomes after stroke than patients with Medicare alone. We compared geographic patterns in dual Medicare-Medicaid eligibility and ischemic stroke hospitalizations and examined whether these dual-eligible beneficiaries had worse post-stroke outcomes than those with Medicare alone.

METHODS

We identified fee-for-service Medicare beneficiaries aged ≥65 years who were discharged from US acute-care hospitals with a principal diagnosis of ischemic stroke in 2014. Medicare beneficiaries with ≥1 month of Medicaid coverage were considered dual eligible. We mapped risk-standardized stroke hospitalization rates and percentages of beneficiaries with dual eligibility. Mixed models and Cox regression were used to evaluate relationships between dual-eligible status and outcomes up to 1 year after stroke, adjusting for demographic and clinical factors.

RESULTS

At the national level, 12.5% of beneficiaries were dual eligible. Dual-eligible rates were highest in Maine, Alaska, and the southern half of the United States, whereas stroke hospitalization rates were highest in the South and parts of the Midwest (Pearson's r = 0.469, p<0.001). Among 254,902 patients hospitalized for stroke, 17.4% were dual eligible. In adjusted analyses, dual-eligible patients had greater risk of all-cause readmission within 30 days (hazard ratio 1.06, 95% confidence interval [CI] 1.03-1.09) and 1 year (hazard ratio 1.03, 95% CI 1.02-1.05) and had greater odds of death within 1 year (odds ratio 1.20, 95% CI 1.17-1.23) when compared with Medicare-only patients; there was no difference in in-hospital or 30-day mortality.

CONCLUSION

Dual-eligible stroke patients had higher readmissions and long-term mortality than other patients, even after comorbidity adjustment. A better understanding of the factors contributing to these poorer outcomes is needed.

Area Deprivation Index is not predictive of worse outcomes after open lower extremity revascularization

OBJECTIVE

Prior research has shown that socioeconomic status (SES) is associated with higher rates of diabetes, peripheral vascular disease, and amputation. We sought to determine whether SES or insurance type increases the risk of mortality, major adverse limb events (MALE), or hospital length of stay (LOS) after open lower extremity revascularization.

METHODS

We conducted a retrospective analysis of patients who underwent open lower extremity revascularization at a single tertiary care center from January 2011 to March 2017 (n = 542). SES was determined using state Area Deprivation Index (ADI), a validated metric determined by income, education, employment, and housing quality by census block group. Patients undergoing amputation in this same time period (n = 243) were included to compare rates of revascularization to amputation by ADI and insurance status. For patients undergoing revascularization or amputation procedures on both limbs, each limb was treated individually for this analysis. We performed a multivariate analysis of the association between ADI and insurance type with mortality, MALE, and LOS using Cox proportional hazard models, including confounding variables such as age, gender, smoking status, body mass index, hyperlipidemia, hypertension, and diabetes. The cohort with an ADI quintile of 1, meaning least deprived, and the Medicare cohort were used for reference. P values of <.05 were considered statistically significant.

RESULTS

We included 246 patients undergoing open lower extremity revascularization and 168 patients undergoing amputation. Controlling for age, gender, smoking status, body mass index, hyperlipidemia, hypertension, and diabetes, ADI was not an independent predictor of mortality (P = .838), MALE (P = .094), or hospital LOS (P = .912). Controlling for the same confounders, uninsured status was independently predictive of mortality (P = .033), but not MALE (P = .088) or hospital LOS (P = .125). There was no difference in the distribution of revascularizations or amputations by ADI (P = .628), but there was higher proportion of uninsured patients undergoing amputation compared with revascularization (P < .001).

CONCLUSIONS

This study suggests that ADI is not associated with an increased risk of mortality or MALE in patients undergoing open lower extremity revascularization, but that uninsured patients are at higher risk of mortality after revascularization. These findings indicate that individuals undergoing open lower extremity revascularization at this single tertiary care teaching hospital received similar care, regardless of their ADI. Further study is warranted to understand the specific barriers that uninsured patients face.

Mortality differences by race over 20 years in individuals with peripheral artery disease

INTRODUCTION

Racial disparities exist in patients with peripheral artery disease (PAD), with Black individuals having worse PAD-specific outcomes. However, mortality risk in this population has been mixed. As such, we sought to evaluate all-cause mortality by race among individuals with PAD.

METHODS

We analyzed data from the National Health and Nutrition Examination Survey (NHANES). Baseline data were obtained from 1999 to 2004. Patients with PAD were grouped according to self-reported race. Multivariable Cox proportional hazards regression was performed to calculate adjusted hazard ratios (HR) by race. A separate analysis was performed to study the effect of burden of social determinants of health (SDoH) on all-cause mortality.

RESULTS

Of 647 individuals identified, 130 were Black and 323 were White. Black individuals had more premature PAD (30% vs 20%, p < 0.001) and a higher burden of SDoH compared to White individuals. Crude mortality rates were higher in Black individuals in the 40-49-year and 50-69-year age groups compared to White individuals (6.7% vs 6.1% and 8.8% vs 7.8%, respectively). Multivariable analysis demonstrated that Black individuals with both PAD and coronary artery disease (CAD) had a 30% higher hazard of death over 20 years compared to White individuals (HR = 1.3, 95% CI: 1.0-2.1). The cumulative burden of SDoH marginally (10-20%) increased the risk of all-cause mortality.

CONCLUSIONS

In a nationally representative sample, Black individuals with PAD and CAD had higher rates of mortality compared to their White counterparts. These findings add further proof to the ongoing racial disparities among Black individuals with PAD and highlight the necessity to identify ways to mitigate these differences.

Impact of neighborhood social disadvantage on the presentation and management of peripheral artery disease

OBJECTIVE

Studies examining the relationship between socioeconomic disparities and peripheral artery disease (PAD) often focus on individual social health determinants and fail to account for the complex interplay between factors that ultimately impact disease severity and outcomes. Area deprivation index (ADI), a validated measure of neighborhood adversity, provides a more comprehensive assessment of social disadvantage. Therefore, we examined the impact of ADI on PAD severity and its management.

METHODS

We identified all patients who underwent infrainguinal revascularization (open or endovascular) or amputation for symptomatic PAD in the Vascular Quality Initiative registry between 2003 and 2020. An ADI score of 1 to 100 was assigned to each patient based on their residential zip code, with higher ADI scores corresponding with increasing adversity. Patients were categorized by ADI quintiles (Q1-Q5). The outcomes of interest included indication for procedure (claudication, rest pain, or tissue loss) and rates of revascularization (vs primary amputation). Multinomial logistic regression was used to evaluate for an independent association between ADI quintile and these outcomes.

RESULTS

Among the 79,973 patients identified, 9604 (12%) were in the lowest ADI quintile (Q1), 14,961 (18.7%) in Q2, 19,800 (24.8%) in Q3, 21,735 (27.2%) in Q4, and 13,873 (17.4%) in Q5. There were significant trends toward lower rates of claudication (Q1: 39% vs Q5: 34%, P < .001), higher rates of rest pain (Q1: 12.4% vs Q5: 17.8%, P < .001) as the indication for intervention, and lower rates of revascularization (Q1: 80% vs Q5: 69%, P < .001) with increasing ADI quintiles. In adjusted analyses, there was a progressively higher likelihood of presenting with rest pain vs claudication, with patients in Q5 having the highest probability when compared with those in Q1 (relative risk: 2.0; 95% confidence interval: 1.8-2.2; P < .001). Patients in Q5, when compared with those in Q1, also had a higher likelihood of presenting with tissue loss vs claudication (relative risk: 1.4; 95% confidence interval: 1.3-1.6; P < .001). Compared with patients in Q1, patients in Q2-Q5 had a lower likelihood of undergoing any revascularization procedure.

CONCLUSIONS

Among patients who underwent infrainguinal revascularization or amputation in the Vascular Quality Initiative, those with higher neighborhood adversity had more advanced disease at presentation and lower rates of revascularization. Further work is needed to better understand neighborhood factors that are contributing to these disparities in order to identify community-level targets for improvement.

Patients from distressed communities are more likely to be symptomatic at endovascular aneurysm repair and have an increased risk of being lost to long-term follow-up

BACKGROUND

Endovascular aortic aneurysm repair (EVAR) has become the preferred modality to repair abdominal aortic aneurysms (AAAs). However, the effect of the distressed communities index (DCI) on the outcomes of EVAR is still unknown. In the present study, we investigated the effect of DCI on the postoperative outcomes after EVAR.

METHODS

The Society for Vascular Surgery Vascular Quality Initiative database was used for the present study. Patients who had undergone EVAR from 2003 to 2021 were selected for analysis. The study cohort was divided into two groups according to their DCI score. Patients with DCI scores ranging from 61 to 100 were assigned to group I (DCI >60), and those with DCI scores ranging from 0 to 60 were assigned to group II (DCI ≤60). The primary outcomes included the 30-day and 1-year mortality and major adverse cardiovascular events at 30 days. Regression analyses were performed to study the postoperative outcomes. P values ≤ .05 were deemed statistically significant for all analyses in the present study.

RESULTS

A total of 60,972 patients (19.5% female; 80.5% male) had undergone EVAR from 2003 to 2021. Of these patients, 18,549 were in group I (30.4%) and 42,423 in group II (69.6%). The mean age of the study cohort was 73 ± 8.9 years. Group I tended to be younger (mean age, 72.6 vs 73.7 years), underweight (3.5% vs 2.5%), and African American (10.8% vs 3.5%) and were more likely to have Medicaid insurance (3.6% vs 1.9%; P < .05 for all). Group I had had more smokers (87.3% vs 85.3%), a higher rate of comorbidities, including hypertension (84.5% vs 82.9%), diabetes (21.7% vs 19.7%), coronary artery disease (30.3% vs 28.6%), chronic obstructive pulmonary disease (36.9% vs 31.8%), and moderate to severe congestive heart failure (2.6% vs 2%; P < .05 for all). The group I patients were more likely to undergo EVAR for symptomatic AAAs (11.1% vs 7.9%; P < .001; adjusted odds ratio [aOR], 1.25; 95% confidence interval [CI], 1.15-1.37; P < .001) with a higher risk of mortality at 30 days (aOR, 3.98; 95% CI, 2.23-5.44; P < .001) and 1 year (aOR, 1.74; 95% CI, 1.43-2.13; P < .001). A higher risk of being lost to follow-up (28.9% vs 26.3%; P < .001) was also observed in group I.

CONCLUSIONS

Patients from distressed communities who require EVAR tended to have multiple comorbidities. These patients were also more likely to be treated for symptomatic AAAs, with a higher risk of mortality. An increased incidence of lost to long-term follow-up was also observed for this population. Surgeons and healthcare systems should consider these outcomes and institute patient-centered approaches to ensure equitable healthcare.

The impact of neighborhood social disadvantage on abdominal aortic aneurysm severity and management

OBJECTIVE

Recent studies have highlighted socioeconomic disparities in the severity and management of abdominal aortic aneurysm (AAA) disease. However, these studies focus on individual measures of social disadvantage such as income and insurance status. The area deprivation index (ADI), a validated measure of neighborhood deprivation, provides a more comprehensive assessment of social disadvantage. Therefore, we examined the impact of ADI on AAA severity and its management.

METHODS

We identified all patients who underwent endovascular or open repair of an AAA in the Vascular Quality Initiative registry between 2003 and 2020. An ADI score of 1 to 100 was assigned to each patient based on their residential zip code, with higher ADI scores corresponding with increasing deprivation. Patients were categorized by ADI quintiles. Outcomes of interest included rates of ruptured AAA (rAAA) repair versus an intact AAA repair and rates of endovascular repair (EVAR) versus the open approach. Logistic regression was used to evaluate for an independent association between ADI quintile and these outcomes.

RESULTS

Among 55,931 patients who underwent AAA repair, 6649 (12%) were in the lowest ADI quintile, 11,692 (21%) in the second, 15,958 (29%) in the third, 15,035 (27%) in the fourth, and 6597 (12%) in the highest ADI quintile. Patients in the two highest ADI quintiles had a higher proportion of rAAA repair (vs intact repair) compared with those in the lowest ADI quintile (8.8% and 9.1% vs 6.2%; P < .001). They were also less likely to undergo EVAR (vs open approach) when compared with the lowest ADI quintile (81% and 81% vs 88%; P < .001). There was an overall trend toward increasing rAAA and decreasing EVAR rates with increasing ADI quintiles (P < .001). In adjusted analyses, when compared with patients in the lowest ADI quintile, patients in the highest ADI quintile had higher odds of rAAA repair (odds ratio, 1.4; 95% confidence interval, 1.2-1.8; P < .001) and lower odds of undergoing EVAR (odds ratio, 0.54; 95% confidence interval, 0.45-0.65; P < .001).

CONCLUSIONS

Among patients who underwent AAA repair in the Vascular Quality Initiative, those with higher neighborhood deprivation had significantly higher rates of rAAA repair (vs intact repair) and lower rates of EVAR (vs open approach). Further work is needed to better understand neighborhood factors that are contributing to these disparities to identify community-level targets for improvement.

Impact of neighborhood social disadvantage on carotid artery disease presentation, management, and discharge outcomes

OBJECTIVE

Recent studies have highlighted that race and socioeconomic status serve as important determinants of disease presentation and perioperative outcomes in carotid artery disease. However, these investigations only focus on individual factors of social disadvantage, and fail to account for community factors that may drive disparities. Area Deprivation Index (ADI) is a validated measure of neighborhood adversity that offers a more comprehensive assessment of social disadvantage. We examined the impact of ADI ranking on carotid artery disease severity, management, and postoperative outcomes.

METHODS

We identified patients who underwent carotid endarterectomy (CEA), transfemoral carotid artery stenting (tfCAS), and transcarotid artery revascularization (TCAR) in the Vascular Quality Initiative registry between 2016 and 2020. Patients were assigned ADI scores of 1 to 100 based on zip codes and grouped into quintiles, with higher quintiles reflecting increasing adversity. Outcomes assessed included disease presentation, intervention type, and discharge patterns. Logistic regression was used to evaluate independent associations between ADI quintiles and these outcomes.

RESULTS

Among 91,904 patients undergoing carotid revascularization, 9811 (10.7%) were in the lowest ADI quintile (Q1), 18,905 (20.6%) in Q2, 25,442 (27.7%) in Q3, 26,099 (28.4%) in Q4, and 11,647 (12.7%) in Q5. With increasing ADI quintiles, patients were more likely to present with symptomatic disease (Q5, 52.1% vs Q1, 46.6%; P < .001), and stroke vs transient ischemic attack (Q5, 63.1% vs Q1, 53.5%; P < .001); they also more frequently underwent CAS vs CEA (Q5, 46.4% vs Q1, 33.9%; P < .001), and specifically tfCAS vs TCAR (Q5, 54.2% vs Q1, 33.9%; P < .001). In adjusted analyses, higher ADI quintiles remained as independent risk factors for presenting with symptomatic disease and stroke and undergoing CAS and tfCAS. Across ADI quintiles, patients were more likely to experience death (Q5, 0.8% vs Q1, 0.4%; P < .001), stroke/death (Q5, 2.1% vs Q1, 1.6%; P = .001), failure to discharge home (Q5, 11.5% vs Q1, 8.0%; P < .001) and length of stay >2 days (Q5, 33.3% vs Q1, 26.3%; P < .001) following revascularization.

CONCLUSIONS

Among carotid revascularization patients, those with greater neighborhood social disadvantage had greater disease severity and more frequently underwent tfCAS. These patients also had higher rates of death and stroke/death, were less frequently discharged home, and had prolonged hospital stays. Greater efforts are needed to ensure that patients in higher ADI quintiles undergo better carotid surveillance and are treated appropriately for their carotid artery disease.

The Influence of the Socioeconomic Status and the Density of the Population on the Outcome After Peripheral Artery Disease

BACKGROUND

Low socioeconomic status (SES) and living in a rural environment are associated with poorer health and a higher number of amputations among the population at large. The purpose of this study is to determine the influence of low SES and of the degree of urbanization on the short-term and long-term results of patients after revascularization for peripheral artery disease.

METHODS

An observational retrospective follow-up study of 770 patients operated on for peripheral artery disease at three university centers in north-western Spain from January 2015 to December 2016. The events studied were Rutherford classification of severity upon admission, direct amputation, amputations in the follow-up period, new revascularization procedures, major adverse cardiovascular events (MACE), and overall mortality. Mean personal income and income of the household associated with the street in which each patient lived and the degree of urbanization in three areas as per Eurostat criteria: densely populated areas, intermediate density areas, and thinly populated areas. Comorbidity, surgical, and follow-up variables were also collected. Descriptive analysis and Cox regression were used. Approval was obtained from the regional ethics committee.

RESULTS

Median follow-up was 47.5 months. MACE occurred in 21.5% of the series and overall mortality was 47.0%. Living in a thinly populated area is associated with a lower risk of MACE (adjusted subhazard ratio = 0.60; 95% confidence interval [CI]: 0.39-0.91). Overall survival is lower in intermediate density area patients (adjusted Hazard Ratio = 1.46; 95% CI: 1.07-2.00). The third quartile of mean personal and household income is associated with a higher risk of major amputation at follow-up (adjusted Odds Ratio 1.92, 95% CI: 1.05-3.52 and adjusted Odds Ratio 1.93, 95% CI: 1.0.3-3.61, respectively).

CONCLUSIONS

Patients who live in a densely populated area run a higher risk of MACE. SES is neither associated with worse outcomes after surgery nor with MACE in long-term follow-up.

Comparative evaluation of socioeconomic insecurity in peripheral and coronary artery disease patients

BACKGROUND

Cardiovascular disease represents the leading cause of death worldwide. Socioeconomic deprivation is a risk factor for cardiovascular disease. We have previously shown that precariousness was more frequent in symptomatic peripheral artery disease (PAD) patients than in the general population. According to a previous study, coronary artery disease (CAD) patients have a higher level of education than CAD with PAD, but no study directly compared the level of precariousness in PAD and CAD patients.

AIM

To measure and compare the level of socioeconomic insecurity in patients suffering from symptomatic PAD with those suffering from isolated CAD, i.e without symptomatic PAD.

METHODS

We conducted an observational, cohort, prospective, multicenter study. Patients suffering from symptomatic PAD or CAD were recruited through the medical or surgical vascular or cardiology departments, or the vascular rehabilitation center. The EPICES score and the INSEE parameters were used for analysis. The individual is considered precarious when his or her score is greater than or equal to 30. Cardiovascular risk factors and peripheral arterial disease stages were also collected.

RESULTS

In total, 230 patients were included. According to the EPICES score, 47.8% [95%CI, 38.7-56.7] of patients with symptomatic PAD were in a precarious situation compared to 17.4% [95%CI, 10.5-24.3] of patients suffering from isolated CAD (P<0.001). The mean EPICES score was 33.3 (SD 22.5) in the PAD and 16.9 (SD 17.02) in the CAD population, respectively (P<0.001). In the PAD population, the level of education was low, with an under-representation of patients with a baccalaureate or higher education degree: 21.7% [95%CI, 14.2-29.3] vs. 41.7% [95%CI, 32.7-50.7] in the PAD and CAD populations, respectively. There was also an under-representation of executives and intellectual and intermediate professions in the PAD population, 18.3% [95%CI, 11.2-25.3], compared to the CAD population, 31.3% [95%CI, 22.8-39.8].

CONCLUSION

PAD patients are more precarious than patients suffering from CAD. A better detection of socioeconomic deprivation in patients suffering from peripheral arterial disease could allow comprehensive care and thus hope for an improvement in terms of morbidity and mortality.

Optimized diagnosis-based comorbidity measures for all-cause mortality prediction in a national population-based ICU population

BACKGROUND

We aimed to optimize prediction of long-term all-cause mortality of intensive care unit (ICU) patients, using quantitative register-based comorbidity information assessed from hospital discharge diagnoses prior to intensive care treatment.

MATERIAL AND METHODS

Adult ICU admissions during 2006 to 2012 in the Swedish intensive care register were followed for at least 4 years. The performance of quantitative comorbidity measures based on the 5-year history of number of hospital admissions, length of stay, and time since latest admission in 36 comorbidity categories was compared in time-to-event analyses with the Charlson comorbidity index (CCI) and the Simplified Acute Physiology Score (SAPS3).

RESULTS

During a 7-year period, there were 230,056 ICU admissions and 62,225 deaths among 188,965 unique individuals. The time interval from the most recent hospital stays and total length of stay within each comorbidity category optimized mortality prediction and provided clear separation of risk categories also within strata of age and CCI, with hazard ratios (HRs) comparing lowest to highest quartile ranging from 1.17 (95% CI: 0.52-2.64) to 6.41 (95% CI: 5.19-7.92). Risk separation was also observed within SAPS deciles with HR ranging from 1.07 (95% CI: 0.83-1.38) to 3.58 (95% CI: 2.12-6.03).

CONCLUSION

Baseline comorbidity measures that included the time interval from the most recent hospital stay in 36 different comorbidity categories substantially improved long-term mortality prediction after ICU admission compared to the Charlson index and the SAPS score. Trial registration ClinicalTrials.gov ID NCT04109001, date of registration 2019-09-26 retrospectively.

Orthopaedic Surgeon Distribution in the United States

BACKGROUND

There is limited research on the supply and distribution of orthopaedic surgeons in the United States. The goal of this study was to analyze the association of orthopaedic surgeon distribution in the United States with geographic and sociodemographic factors.

METHODS

County-level data from the US Department of Health and Human Services Area Health Resources Files were used to determine the density of orthopaedic surgeons across the United States on a county level. Data were examined from 2000 to 2019 to analyze trends over time. Bivariate and multivariable negative binomial regression models were constructed to identify county-level sociodemographic factors associated with orthopaedic surgeon density.

RESULTS

In 2019, 51% of the counties in the United States did not have an orthopaedic surgeon. Metropolitan counties had a mean of 22 orthopaedic surgeons per 100,000 persons while nonmetropolitan and rural counties had a mean of 2 and 0.1 orthopaedic surgeons per 100,000 persons, respectively. Over the past 2 decades, there was a significant increase in the percentage of orthopaedic surgeons in metropolitan counties (77% in 2000 vs 93% in 2019, P < 0.001) and in the proportion of orthopaedic surgeons 55 years and older (32% in 2000 vs 39% in 2019, P < 0.001). Orthopaedic surgeon density increased with increasing median home value (P < 0.001) and median household income (P < 0.001). Counties with a higher percentage of persons in poverty (P < 0.001) and higher unemployment rate (P < 0.001) and nonmetropolitan (P < 0.001) and rural (P < 0.001) counties had a lower density of orthopaedic surgeons. On multivariable analysis, a model consisting of median home value (P < 0.001), rural counties (P < 0.001), percentage of noninsured persons (P < 0.001), and percentage of foreign-born persons (P < 0.001) predicted orthopaedic surgeon density.

CONCLUSION

Access to orthopaedic surgeons in the United States in rural areas is decreasing over time. County-level socioeconomic factors such as wealth and urbanization were found to be closely related with surgeon density.

Socioeconomic disparities in abdominal aortic aneurysm repair rates and survival

BACKGROUND

Abdominal aortic aneurysm (AAA) is more prevalent in socioeconomically disadvantaged areas. This study investigated socioeconomic disparities in AAA repair rates and survival.

METHODS

The study used ecological and cohort study designs, from 31 672 census areas in England (April 2006 to March 2018), the Index of Multiple Deprivation 2010 as the area-level deprivation indicator, and Poisson, logistic and Cox regression.

RESULTS

Some 77 606 patients (83.4 per cent men) in four age categories (55-64, 65-74, 75-84, 85 or more years) were admitted with AAA from a population aged at least 55 years of 14.7 million. Elective open and endovascular repair rates were 41 (95 per cent c.i. 23 to 61) and 60 (36 to 89) per cent higher respectively among men aged 55-64 years in the most versus least deprived areas by quintile. This differences diminished and appeared to reverse with increasing age, with 26 (-1 to 45) and 25 (13 to 35) per cent lower rates respectively in men aged 85 years or more in the most deprived areas. Men admitted from more deprived areas were more likely to die in hospital without aneurysm repair. Among those who had aneurysm repair, this was more likely to be for a ruptured aneurysm than among men from less deprived areas. For intact aneurysm repair, they were relatively more likely to have this during an emergency admission. The mortality rate after repair was higher for men from more deprived areas, although the hazard diminished with age. Patterns were unclear for women.

CONCLUSION

There were clear socioeconomic disparities in operation rates, mode of presentation, and outcome for AAA surgery. Policies are needed to address these disparities.

Outcomes of Transcatheter and Surgical Aortic Valve Replacement in Distressed Socioeconomic Communities

Objective

Patients of low socioeconomic status have an increased risk of complications following cardiac surgery. We aimed to identify disparities in patients undergoing aortic valve replacement using the Distressed Communities Index (DCI), a comparative measure of community well-being. The DCI incorporates seven distinct socioeconomic indicators into a single composite score to depict the economic well-being of a community.

Methods

The Healthcare Cost and Utilization Project State Inpatient Database (HCUP-SID) for Florida and Washington was queried to identify patients undergoing surgical and transcatheter aortic valve replacement (surgical aortic valve replacement [SAVR], transcatheter aortic valve replacement [TAVR]) between 2012-2015. Patients undergoing TAVR and SAVR were propensity-matched and stratified based on the quintile of DCI score. A distressed community was defined as those in quintiles 4 and 5 (at-risk and distressed, respectively); a non-distressed community was defined as those in quintiles 1 and 2 (prosperous and comfortable, respectively). Outcomes following aortic valve replacement were compared across groups in distressed communities. Propensity score matching was used to balance baseline covariates between groups.

Results

A total of 27,591 patients underwent aortic valve replacement. After propensity matching, 5,331 patients were identified in each TAVR and SAVR group. Distressed TAVR patients had lower rates of postoperative pneumonia (7.6% vs. 3.8%, p<0.001), sepsis (3.6% vs. 1.9%, p<0.05), and cardiac complications (15.4% vs. 7.5%, p<0.001) when compared to highly distressed SAVR patients. When comparing distressed SAVR and TAVR and low distressed SAVR and TAVR groups, no significant difference was found in postoperative outcomes, except distressed TAVR experienced more cases of UTI.

Conclusions

Highly distressed TAVR patients had lower incidences of postoperative sepsis, pneumonia, and cardiac complications when compared to the highly distressed SAVR cohort. Patients undergoing TAVR in highly distressed communities had an increased incidence of postoperative urinary tract infection. DCI may be a useful adjunct to current risk scoring systems.

AAA Revisited: A Comprehensive Review of Risk Factors, Management, and Hallmarks of Pathogenesis

Despite declining incidence and mortality rates in many countries, the abdominal aortic aneurysm (AAA) continues to represent a life-threatening cardiovascular condition with an overall prevalence of about 2-3% in the industrialized world. While the risk of AAA development is considerably higher for men of advanced age with a history of smoking, screening programs serve to detect the often asymptomatic condition and prevent aortic rupture with an associated death rate of up to 80%. This review summarizes the current knowledge on identified risk factors, the multifactorial process of pathogenesis, as well as the latest advances in medical treatment and surgical repair to provide a perspective for AAA management.

Social Deprivation and Peripheral Artery Disease

The link between peripheral artery disease and socioeconomic status is complex. The objective of this narrative review is to explore this relationship in detail, including how social factors impact the development, management, and outcomes of peripheral artery disease. Although the current literature on this topic is limited, some patterns do emerge. Populations of low socioeconomic status appear to be at increased risk for the development of peripheral artery disease, due to factors such as increased prevalence of cardiovascular risk factors (i.e. cigarette smoking) and decreased access to care. However, variables that are more difficult to quantify, such as chronic stress and health literacy, also likely play a significant role. Among those who are living with peripheral artery disease, socioeconomic status can also affect disease management. Secondary prevention strategies, such as medication use, smoking cessation, and exercise therapy, are underutilized in socially deprived populations. This underutilization of evidence-based management leads to adverse outcomes in these groups, including increased rates of amputation and decreased post-operative survival. The recognition of the importance of social factors in prognosis is an important first step towards addressing this health disparity. Moving forward, interventions that help to identify those who are at high risk and help to improve access to care in populations of low socioeconomic status, will be critical to improving outcomes.

Social Deprivation and the Association With Survival Following Fenestrated Endovascular Aneurysm Repair

BACKGROUND

Social deprivation is associated with poor clinical outcomes. It is known to have an impact on length of stay and post-operative mortality across a number of other surgical specialties. This study evaluates the impact of social deprivation on outcomes following fenestrated endovascular aneurysm repair (FEVAR).

METHODS

All elective FEVARs performed between 2010 and 2018 at a tertiary vascular center were analyzed. Deprivation (index of multiple deprivation [IMD]) data was sourced from the English indices of deprivation 2019, by postcode. Primary outcome was overall survival by Kaplan-Meier. Secondary outcomes included length of hospital stay (LOS) and complications. Cox-proportional hazard analyses were conducted.

RESULTS

Some 132 FEVAR patients were followed-up for 3.7 (SD 2.2) years. Fifty-seven patients lived in areas with high levels of deprivation (IMD 1-3), 34 in areas with moderate deprivation (IMD 4-6) and 41 in areas with the lowest level (IMD 7-10) of deprivation. Groups were comparable for Age, BMI, AAA diameter and co-morbidity. A higher proportion of patients from deprived areas had renal failure (15% [26.3%] vs. 9% [11.8%] P = 0.019) but no overall difference in procedure time was observed (200 min [155-250] vs. 180 min [145-240] P = 0.412). Kaplan-Meier analysis demonstrated significantly poorer survival for patients living in areas with high levels of deprivation (IMD 1-3) (P = 0.03). Mortality was comparable for IMD 4-6 and 7-10 groups. Patients from the most deprived areas had longer hospital stay (6 days [4-9] vs. 5 [3-7] P = 0.005) and higher all-cause complication rates (21 [36.8%] vs. 14 [18.4%] P = 0.02). Decreasing IMD was associated with worse survival (HR -0.85 [0.75-0.97] [P = 0.02]).

CONCLUSIONS

Social deprivation was associated with increased mortality, length of stay and all-cause complication rates in patients undergoing FEVAR for complex abdominal aortic aneurysm (AAA). These results may help direct preoptimization measures to improve outcomes in higher risk sub-groups.

Area Deprivation Index Score is Associated with Lower Rates of Long Term Follow-up after Upper Extremity Vascular Injuries

The Area Deprivation Index (ADI) has been shown to be a determinant of healthcare outcomes in both medical and surgical fields, and is a measure of the socioeconomic status of patients. We sought to analyze outcomes in patients with upper extremity vascular injuries that were admitted over a five-year period to a Level I trauma center sorted by ADI. All patients with upper extremity vascular injury presenting to a level one trauma center between January 2013 and January 2017 were retrospectively collected. The patients were divided into two groups based on their ADI with the first group representing the lowest quartile of patients and the second group the higher three quartiles. Patient's demographics were analyzed as well as modes of trauma, hospital transfer status prior to receiving care, type of intervention received, follow-up rates and outcomes including both complication and amputation rates. Over this time period, a total of 88 patients with traumatic upper extremity vascular injuries were identified. The majority of injuries were due to penetrating trauma (74/88, 84%) with 41% (10/24) of patients in the lower ADI being victims of gunshot wounds compared to 27% (17/64) of those in the higher ADI (P = 0.19). Patients in the lowest ADI quartile were more likely to be African Americans (P= 0.0001), and more likely to be transferred to our university hospital prior to receiving care (P= 0.007). Arrival Glasgow Coma Scale and Injury Severity Score were similar as was time spent in the emergency room. Length of stay trended longer in the lowest ADI quartile as compared to the higher ADI (7.5 vs. 11.8, P= 0.59). The rates of long term follow-up were significantly lower in patients with the lowest ADI scores as opposed to the higher ADI group (P= 0.0098), however, there was no statistically significant difference in outcomes between the two groups including both complication and amputation rates. The ADI is associated with lower rates of long term follow-up after upper extremity vascular injuries, despite patients in both the high and low ADI groups having similar outcomes in regards to complication and amputation rates. Further study is warranted to investigate the role of the socioeconomic status in outcomes following traumatic injury.

Evaluation of socio-economic insecurity in peripheral artery disease patients

The social and economic environment has become a major determinant of cardiovascular health. The objective of our study was to assess socio-economic insecurity in patients with symptomatic PAD. The PRECAR study was a non-interventional prospective cohort study. Patients were recruited from the Vascular Medicine and Surgery Departments of Grenoble-Alpes University Hospital or during a consultation as part of the therapeutic education program "On the move! Better understanding and better living with arterial disease". The analysis of socio-economic and environmental data was based on the EPICES score (a reliable index used to measure individual deprivation) and INSEE parameters (level of education and socio-professional category). Cardiovascular risk factors were also recorded. 150 patients with symptomatic PAD were included between November 2017 and June 2018. 84% were men. In our population 54% (CI95% 45.7 - 62.1) were in a precarious situation compared to 40% (CI95% 39.8 - 40.2) in the general population, according to the EPICES score (P<0.001). Levels of education were low and patients with a baccalaureate or higher education degree were under-represented. Executives, intellectuals and intermediate professions were also under-represented in the PAD population. This data opens new perspectives on the social characterisation of patients that may contribute to improving the outcomes of patients with peripheral vascular disease.

The epidemiology of lower extremity amputations, strategies for amputation prevention, and the importance of patient-centered care

Dysvascular amputations, defined as those secondary to the complications of peripheral arterial disease or diabetes mellitus, are the most common cause of lower extremity amputations. Despite recent advancements in diabetes mellitus treatments and the many modern innovations in endovascular therapies, the incidence of dysvascular lower extremity amputations has not improved. In this article, we will review the most recent epidemiological data on lower extremity amputations, discuss the latest recommendations from different medical societies for the prevention of limb loss, and explore the role of the vascular surgeon as part of a multidisciplinary team in providing comprehensive care for patients at risk of undergoing amputations for ischemic or diabetic complications. We will also discuss the importance of considering patient perspectives and patient-reported outcomes to better understand the impact of amputations on the patient experience.

Higher complication rates after management of lower extremity fractures in lower socioeconomic classes: Are risk adjustment models necessary?

Introduction

Alternative payment models, such as bundled payments, have been proposed to control rising costs in orthopaedic trauma surgery. Without risk adjustment models, concerns exist about the financial burden incurred by so called “safety-net hospitals” that serve patients of lower socioeconomic status. The purpose of this study was to determine whether lower socioeconomic status was associated with increased complications and subsequently higher resource utilization following surgical treatment of high-energy lower extremity fractures.

Methods

The National Inpatient Sample database was queried for patients who underwent surgical fixation of the femur and tibia between 2005–2014. The top and bottom income quartiles were compared. Demographics, medical comorbidities, length of stay (LOS), complications, in-hospital mortality were compared between patients of top and bottom income quartiles. Multivariate logistic regression analysis was then performed to identify factors independently associated with complications, mortality, and increased resource utilization.

Results

Patients with femur fracture in the bottom income quartile had longer length of stay (6.9 days vs 6.5 days, p < 0.001) and a higher mortality rate (1.9% vs 1.7%, p = 0.034). Patients with tibia fracture in the bottom income quartile had greater complication rates (7.3% vs 6.1%, p < 0.001), longer length of stay (5.3 days vs. 4.5 days, p < 0.001), and higher mortality (0.3% vs. 0.2%, p < 0.001).

Conclusions

Lower income status is associated with increased in-hospital mortality and longer length of stay in patients following lower extremity fractures. Risk adjustment models should consider the role of socioeconomic status in patient resource utilization to ensure continued access to orthopedic trauma care for all patients.

Social deprivation aggravates post-operative morbidity in carcinologic colorectal surgery: Results of the COINCIDE multicenter study

AIM OF THE STUDY

Evaluate the impact of social deprivation on morbidity and mortality in surgery for colorectal cancer.

METHODS

The COINCIDE prospective cohort included nearly 2,000 consecutive patients operated on for colorectal cancer at the Assistance Publique-Hospitals of Paris (AP-HP) from 2008 to 2010. The data on these patients were crossed with the PMSI administrative database. The European Social Deprivation Index (EDI) was calculated for each patient and classified into five quintiles (quintiles 4 and 5 being the most disadvantaged patients). Thirty-day post-operative morbidity was determined according to the Dindo-Clavien classification, with a Had®Hoc re-analysis of each file. Statistical analysis was performed using the proprietary Q-finder® algorithm.

RESULTS

One thousand two hundred and fifty nine curative colorectal resections were analyzed. Mortality was 2.7% and severe morbidity (Dindo-Clavien≥3) occurred in 16.4%. Mortality was not statistically significantly increased among the most disadvantaged who made up almost two thirds of the population (64.2%). Patients in quintiles 4 and 5 had a statistically significant increase in severe morbidity. The relative risk remained 1.5 even after adjustment for the known risk factors found in the analysis: age>70 years, ASA score, urgency, and laparotomy.

CONCLUSIONS

The EDI represents an independent risk factor for severe morbidity after carcinologic colorectal resection. This study suggests that the determinants of health are multidimensional and do not depend solely on the quality and performance of the care system. The inclusion of this index in our surgical databases is therefore necessary, as is its use in health policy for the distribution of resources.

Socioeconomic Status and Days Alive and Out of Hospital after Major Elective Noncardiac Surgery: A Population-based Cohort Study

BACKGROUND

Socioeconomic status is an important but understudied determinant of preoperative health status and postoperative outcomes. Previous work has focused on the impact of socioeconomic status on mortality, hospital stay, or complications. However, individuals with low socioeconomic status are also likely to have fewer supports to facilitate them remaining at home after hospital discharge. Thus, such patients may be less likely to return home over the short and intermediate term after major surgery. The newly validated outcome, days alive and out of hospital, may be highly suited to evaluating the impact of socioeconomic status on this postdischarge period. The study aimed to determine the association of socioeconomic status with short and intermediate term postoperative recovery as measured by days alive and out of hospital.

METHODS

The authors evaluated data from 724,459 adult patients who had one of 13 elective major noncardiac surgical procedures between 2006 and 2017. Socioeconomic status was measured by median neighborhood household income (categorized into quintiles). Primary outcome was days alive and out of hospital at 30 days, while secondary outcomes included days alive and out of hospital at 90 and 180 days, and 30-day mortality.

RESULTS

Compared to the highest income quintile, individuals in the lowest quintile had higher unadjusted risks of postoperative complications (6,049 of 121,099 [5%] vs. 6,216 of 160,495 [3.9%]) and 30-day mortality (731 of 121,099 [0.6%] vs. 701 of 160,495 [0.4%]) and longer mean postoperative length of stay (4.9 vs. 4.4 days). From lowest to highest income quintile, the mean adjusted days alive and out of hospital at 30 days after surgery varied between 24.5 to 24.9 days.

CONCLUSIONS

Low socioeconomic status is associated with fewer days alive and out of hospital after surgery. Further research is needed to examine the underlying mechanisms and develop posthospital interventions to improve postoperative recovery in patients with fewer socioeconomic resources.

Socioeconomically Distressed Communities Index independently predicts major adverse limb events after infrainguinal bypass in a national cohort

BACKGROUND

Socioeconomic status is a major determinant of not only quality of life, but also mortality and health care-related outcomes. We hypothesized that patients coming from distressed communities would have worse short- and long-term limb related outcomes after infrainguinal bypass.

METHODS

The infrainguinal bypass national Vascular Quality Initiative datasets for 2003 to 2018 were used. Clinical data were paired with the Distressed Communities Index (DCI) score before extraction. The DCI accounts for unemployment, education level, poverty rate, median income, business growth, and housing vacancies at the zip code level, with a range of 0 (no distress) to 100 (severe distress). Severely distressed communities were defined as DCI greater than 75 for univariate analysis. Hierarchical multivariable modeling adjusted for baseline and operative risk factors, and clustering at the hospital level.

RESULTS

The 9711 patients who underwent infrainguinal bypass from severely distressed communities (out of 40,109 total) were younger, more likely to smoke, disproportionately African American, with more comorbid disease (all P < .05). Patients from less distressed communities had lower rates of critical limb ischemia (56% DCI ≤ 75 vs 60% DCI > 75; P < .0001) and prior amputation (4.7 vs 6.3%; P < .0001). There was no difference in in-hospital mortality (1.3% vs 1.3%; P = .906) or major adverse cardiovascular events (4.1% vs 3.7%; P = .097). However, patients from distressed communities had higher rates of major adverse limb events (MALE; 11.7% vs 14.4%; P < .0001), and the components amputation, thrombectomy, and revision. After risk adjustment, DCI remained an independent predictor of in-hospital MALE (odds ratio, 1.05 per 25 DCI points; 95% confidence interval [CI], 1.02-1.08; P = .001) and long-term MALE (hazard ration [HR] 1.02; 95% CI, 1.00-1.04; P = .045). DCI is predictive of long-term graft occlusion (HR, 1.04; 95% CI, 1.00-1.07; P = .028) and amputation (HR, 1.09; 95% CI, 1.06-1.12; P < .0001).

CONCLUSIONS

The DCI is an independent predictor of MALE after infrainguinal bypass. Patients from distressed communities are at an increased risk of long-term graft occlusion, which is disproportionately treated with amputation instead of surgical limb-saving alternatives. Socioeconomic factors impact vascular disease and surgical outcomes with disparities that warrant further investigation.

Low Socioeconomic Status Is Associated with Worse Outcomes After Curative Surgery for Colorectal Cancer: Results from a Large, Multicenter Study

BACKGROUND

Socioeconomic status (SES) has been associated with early mortality in cancer patients. However, the association between SES and outcome in colorectal cancer patients is largely unknown. The aim of this study was to investigate whether SES is associated with short- and long-term outcome in patients undergoing curative surgery for colorectal cancer.

METHODS

Patients who underwent curative surgery in the region of Rotterdam for stage I-III colorectal cancer between January 2007 and July 2014 were included. Gross household income and survival status were obtained from a national registry provided by Statistics Netherlands Centraal Bureau voor de Statistiek. Patients were assigned percentiles according to the national income distribution. Logistic regression and Cox proportional hazard regression were performed to assess the association of SES with 30-day postoperative complications, overall survival and cancer-specific survival, adjusted for known prognosticators.

RESULTS

For 965 of the 975 eligible patients (99%), gross household income could be retrieved. Patients with a lower SES more often had diabetes, more often underwent an open surgical procedure, and had more comorbidities. In addition, patients with a lower SES were less likely to receive (neo) adjuvant treatment. Lower SES was independently associated with an increased risk of postoperative complications (Odds ratio per percent increase 0.99, 95%CI 0.99-0.998, p = 0.004) and lower cancer-specific mortality (Hazard ratio per percent increase 0.99, 95%CI 0.98-0.99, p = 0.009).

CONCLUSION

This study shows that lower SES is associated with increased risk of postoperative complications, and poor cancer-specific survival in patients undergoing surgery for stage I-III colorectal cancer after correcting for known prognosticators.

Outcomes after peripheral artery disease intervention among Medicare-Medicaid dual-eligible patients compared with the general medicare population in the Vascular Quality Initiative registry

Objective

To determine whether patients from the Vascular Quality Initiative (VQI) registry who are Medicare–Medicaid dual-eligible have outcomes after surgical intervention with medical devices such as stents for peripheral artery disease comparable to the outcomes of those eligible for Medicare alone.

Methods

The study cohort included fee-for-service Medicare beneficiaries from 2010 to 2015 who underwent peripheral vascular intervention as determined by the VQI. We performed propensity matching between the dual-eligible and non-dual-eligible cohorts. Postintervention use, including imaging, amputation and death, was determined using Medicare claims data.

Results

Rates of major amputation were higher among dual-eligible patients (13.0% vs 10.5%, p<0.001), while time to amputation by disease severity was similar (p=0.443). For patients with more advanced disease (critical limb ischaemia (CLI) vs claudication), dual-eligible patients have significantly faster times to any amputation and death (p<0.001). For of postoperative imaging, 48.4% of dual-eligible patients receive at least one postoperative image, while the percentage for non-dual-eligible patients is 47.2% (p=0.187).

Conclusions

Patients with mild forms of peripheral artery disease (PAD), such as claudication, demonstrated similar outcomes regardless of dual-eligibility status. However, those with severe PAD, such as CLI, who were also dual-eligible had both inferior overall survival and amputation-free survival. Minimal differences were observed in process-driven aspects of care between dual-eligible and non-dual-eligible patients, including postoperative imaging. These findings indicate that despite receiving similar care, dual-eligible patients with severe PAD have inferior long-term outcomes, suggesting the Medicaid safety net is not timely enough to benefit from long-term outcomes for these patients.

Socioeconomic Distressed Communities Index associated with worse limb-related outcomes after infrainguinal bypass

OBJECTIVE

Several studies have demonstrated that socioeconomic factors may affect surgical outcomes. Analyses in vascular surgery have been limited by the availability of individual or community-level socioeconomic data. We sought to determine whether the Distressed Communities Index (DCI), a composite socioeconomic ranking by ZIP code, could predict short- and long-term outcomes for patients with peripheral artery disease.

METHODS

All Virginia Quality Initiative patients (n = 2578) undergoing infrainguinal bypass (2011-2017) within a region of 17 centers were assigned a composite DCI score. The score was developed by the Economic Innovation Group and is normally distributed from 0 (no distress) to 100 (severe distress) based on measures of community unemployment, education level, poverty rate, median income, business growth, and housing vacancies. Severely distressed communities were defined as the top quartile DCI (>75). Hierarchical regression assessed short-term outcomes, and time-to-event analyses assessed long-term results.

RESULTS

Infrainguinal bypass patients in this study came from disproportionately distressed communities, with 29% of patients living within the highest distress DCI quartile (P < .0001), with high variability by hospital (DCI range, 12-67). These patients from severely distressed areas were younger, more likely to smoke, and disproportionately African American and had higher rates of medical comorbidities (all P < .05). Whereas patients from severely distressed communities had an equivalent rate of 30-day major adverse cardiac and cerebrovascular events (5% vs 4%; P = .86), they had increased rates of major adverse limb events (MALEs) at 13% vs 10% (P = .03). This trend persisted in the long term, with higher 1-year estimates of MALEs (21% vs 17%; P = .01) as well as the components of amputation (17% vs 12%; P = .006) and thrombectomy (11% vs 6%; P = .002). Patients with high socioeconomic distress also had higher rates of occlusion (17% vs 11%; P = .003).

CONCLUSIONS

In this study, patients from severely distressed communities were found to have increased rates of MALEs, an association that persisted long term. Mitigating risk associated with socioeconomic determinants of health has the potential to improve outcomes for patients with peripheral artery disease.

The effect of income and insurance on the likelihood of major leg amputation

BACKGROUND

Although it has been suggested that individuals of low socioeconomic status and those with Medicaid or no insurance may be more likely to have their peripheral artery disease treated by leg amputation rather than by limb-saving revascularization, it is not clear if this disparity occurs consistently on a national basis, and if it does so in a linear fashion, such that poorer individuals are at progressively greater risk for amputation.

OBJECTIVE

We undertook this study to determine if lower median household income and Medicaid/no insurance status are associated with a higher risk for amputation, and if this occurs in a progressively linear fashion.

METHODS

The National (Nationwide) Inpatient Sample Database was queried to identify patients who were admitted with a diagnosis of critical limb ischemia from 2005 to 2014 and underwent either a major amputation or a revascularization procedure during that admission. Patients were stratified according to their insurance status and their median household income into four income quartiles. Multivariate logistic regression was performed to determine the effect of income and insurance status on the odds of undergoing amputation vs leg revascularization.

RESULTS

Across the different insurance types, there was a significant decrease in the odds ratios for amputation as one progressed from one MHI quartile to a higher one: namely, Medicare (2.23, 1.87, 1.65, and 1.42 for the first, second, third, and fourth MHI quartiles); Medicaid (2.50, 2.28, 2.04, and 1.80 for the first, second, third, and fourth MHI quartiles); private insurance (1.52, 1.21, 1.16, and 1.00 for the first, second, third, and fourth MHI quartiles), and uninsured (1.91, 1.64, 1.10, and 1.22, for the first, second, third, and fourth MHI quartiles).

CONCLUSIONS

Lower MHI, Medicaid insurance, and uninsured status are associated with a greater likelihood of amputation and a lower likelihood of undergoing limb-saving revascularization. These disparities are exacerbated in stepwise fashion, such that lower income quartiles are at progressively greater risk for amputation.

Socioeconomic Distressed Communities Index Predicts Risk-Adjusted Mortality After Cardiac Surgery

BACKGROUND

The effects of socioeconomic factors other than insurance status and race on outcomes after cardiac operations are not well understood. We hypothesized that the Distressed Communities Index (DCI), a comprehensive socioeconomic ranking by zip code, would predict operative mortality after coronary artery bypass grafting (CABG).

METHODS

All patients who underwent isolated CABG (2010 to 2017) in the Virginia Cardiac Services Quality Initiative database were analyzed. The DCI accounts for unemployment, education level, poverty rate, median income, business growth, and housing vacancies, with scores ranging from 0 (no distress) to 100 (severe distress). Patients were stratified by DCI quartiles (I: 0 to 24.9, II: 25 to 49.9, III: 50 to 74.9, IV: 75 to 100) and compared. Hierarchical linear regression modeled the association between the DCI and mortality.

RESULTS

A total of 19,756 CABG patients were analyzed, with mean predicted risk of mortality of 2.0% ± 3.5%. Higher DCI scores were associated with increasing predicted risk of mortality. Overall operative mortality was 2.1% (n = 424) and increased with increasing DCI quartile (I: 1.6% [n = 95], II: 2.1% [n = 77], III: 2.4% [n = 114], IV: 2.6% [n = 138]; p = 0.0009). The observed-to-expected ratio for mortality increased as level of socioeconomic distress increased. After risk adjustment for The Society of Thoracic Surgeons predicted risk of mortality, year of surgical procedure, and hospital, the DCI remained predictive of operative mortality after CABG (odds ratio, 1.14 for each 25-point increase in DCI; 95% confidence interval 1.04 to 1.26; p = 0.007).

CONCLUSIONS

The DCI independently predicts risk-adjusted operative mortality after CABG. Socioeconomic status, although not part of traditional risk calculators, should be considered when building risk models, evaluating resource utilization, and comparing hospitals.

Outcomes after carotid endarterectomy among elderly dual Medicare-Medicaid-eligible patients

OBJECTIVE

To determine whether patients who are dual eligible for Medicare and Medicaid benefits have outcomes after carotid endarterectomy (CEA) that are comparable to the outcomes of those eligible for Medicare alone.

METHODS

The study cohort included fee-for-service Medicare beneficiaries ≥65 years of age who underwent CEA (ICD-9-CM code 38.12) between 2003 and 2010. Beneficiaries with ≥1 month of Medicaid coverage were considered dual eligible. We fit mixed models to assess the relationship between coverage (dual eligible vs Medicare only) and outcomes over time after adjustment for demographic and clinical characteristics.

RESULTS

There were 53,773 dual-eligible and 452,182 Medicare-only beneficiaries hospitalized for CEA. The percentage of dual-eligible patients receiving CEA increased from 10.1% in 2003 to 11.5% in 2010, with no change in geographic distribution across the country. In adjusted analyses, dual-eligible vs Medicare-only beneficiaries had a higher rate of 30-day ischemic stroke or death; higher in-hospital, 30-day, and 1-year all-cause mortality; and higher 30-day all-cause readmission. Relative annual reductions in outcomes from 2003 to 2010 ranged from 2% to 5%, but there was no significant interaction between dual-eligible status and time.

CONCLUSIONS

Dual-eligible beneficiaries had worse outcomes than those eligible for Medicare alone. Additional work is necessary to understand the reasons for this difference.

Understanding abdominal aortic aneurysm epidemiology: socioeconomic position affects outcome

Background

Low socioeconomic position (SEP) has been demonstrated to negatively influence outcome in several cardiovascular patient groups. The aim of this study was to analyse time trends of incidence of intact abdominal aortic aneurysm (iAAA) and ruptured AAA (rAAA), respectively, and to investigate whether SEP had any influence on the probability to present with rupture and, finally, to determine the impact of SEP on outcome.

Methods

Nationwide population-based study including all individuals with iAAA or rAAA in Sweden during 2001–2015.

Results

The number of individuals with an AAA was 41 222; the majority were identified as iAAA 33 254 (80.7%) and 7968 (19.3%) as rAAA. Time trends showed decreasing incidence of rAAA but increase in iAAA during the study period. Individuals with low income or low educational level were more likely to present with a rAAA rather than iAAA: OR 2.16 (95 % CI 1.98 to 2.36, p<0.001) and OR 1.33 (95 % CI 1.21 to 1.46, p<0.001), respectively. Low income was also associated with increased 90-day mortality and 1-year mortality after treatment for rAAA, OR 1.42 (95% CI 1.07 to 1.89, p=0.014) and OR 1.39 (95% CI 1.13 to 1.97, p=0.005).

Conclusion

This large nationwide study showed a decreasing incidence of rAAA. Individuals with low SEP were found to have an augmented risk of presenting with rAAA rather than iAAA and, in addition, to fare worse after repair. Consequently, SEP should be regarded as a relevant risk factor that should be included in considerations for improved care flow of patients with AAA.

The relation between household income and surgical outcome in the Dutch setting of equal access to and provision of healthcare

Background

The impact of socioeconomic disparities on surgical outcome in the absence of healthcare inequality remains unclear. Therefore, we set out to determine the association between socioeconomic status (SES), reflected by household income, and overall survival after surgery in the Dutch setting of equal access and provision of care. Additionally, we aim to assess whether SES is associated with cause-specific survival and major 30-day complications.

Methods

Patients undergoing surgery between March 2005 and December 2006 in a general teaching hospital in the Netherlands were prospectively included. Adjusted logistic and cox regression analyses were used to assess the independent association of SES–quantified by gross household income–with major 30-day complications and long-term postoperative survival.

Results

A total of 3929 patients were included, with a median follow-up of 6.3 years. Low household income was associated with worse survival in continuous analysis (HR: 1.05 per 10.000 euro decrease in income, 95% CI: 1.01–1.10) and in income quartile analysis (HR: 1.58, 95% CI: 1.08–2.31, first [i.e. lowest] quartile relative to the fourth quartile). Similarly, low income patients were at higher risk of cardiovascular death (HR: 1.26 per 10.000 decrease in income, 95% CI: 1.07–1.48, first income quartile: HR: 3.10, 95% CI: 1.04–9.22). Household income was not independently associated with cancer-related mortality and major 30-day complications.

Conclusions

Low SES, quantified by gross household income, is associated with increased overall and cardiovascular mortality risks among surgical patients. Considering the equality of care provided by this study setting, the associated survival hazards can be attributed to patient and provider factors, rather than disparities in healthcare. Increased physician awareness of SES as a risk factor in preoperative decision-making and focus on improving established SES-related risk factors may improve surgical outcome of low SES patients.

Access to post-discharge inpatient care after lower limb trauma

BACKGROUND

Most hospitals in the United States are required to provide emergency care to all patients, regardless of insurance status. However, uninsured patients might be unable to access non-acute services, such as post-discharge inpatient care (PDIC). This could result in prolonged acute hospitalization. We tested the hypothesis that insurance status would be independently associated with both PDIC and length of stay (LOS).

METHODS

An observational study was undertaken using the California State Inpatient Database (2007-2011), which captures 98% of patients admitted to hospital in California. All patients with a diagnosis of orthopedic lower limb trauma were identified using International Classification of Diseases, 9th Revision, Clinical Modification codes 820-828. Multivariable logistic and generalized linear regression models were used to adjust odds of PDIC and LOS for patient and hospital characteristics.

RESULTS

There were 278,573 patients with orthopedic lower limb injuries, 160,828 (57.7%) of which received PDIC. Uninsured patients had lower odds of PDIC (adjusted odds ratio 0.20, 95% confidence interval 0.17-0.24) and significantly longer hospital LOS (predicted mean difference 1.06 [95% confidence interval 0.78-1.34] d) than those with private insurance.

CONCLUSIONS

Lack of health insurance is associated with reduced access to PDIC and prolonged hospital LOS. This potential barrier to hospital discharge could reduce the number of trauma beds available for acutely injured patients.