Peripheral artery disease (PAD) stems from atherosclerosis of lower extremity arteries with resultant arterial narrowing or occlusion. The most severe form of PAD is termed chronic limb-threatening ...ischemia and carries a significant risk of limb loss and cardiovascular mortality. Diabetes mellitus is known to increase the incidence of PAD, accelerate disease progression, and increase disease severity. Patients with concomitant diabetes mellitus and PAD are at high risk for major complications, such as amputation. Despite a decrease in the overall number of amputations performed annually in the United States, amputation rates among those with both diabetes mellitus and PAD have remained stable or even increased in high-risk subgroups. Within this cohort, there is significant regional, racial/ethnic, and socioeconomic variation in amputation risk. Specifically, residents of rural areas, African-American and Native American patients, and those of low socioeconomic status carry the highest risk of amputation. The burden of amputation is severe, with 5-year mortality rates exceeding those of many malignancies. Furthermore, caring for patients with PAD and diabetes mellitus imposes a significant cost to the healthcare system-estimated to range from $84 billion to $380 billion annually. Efforts to improve the quality of care for those with PAD and diabetes mellitus must focus on the subgroups at high risk for amputation and the disparities they face in the receipt of both preventive and interventional cardiovascular care. Better understanding of these social, economic, and structural barriers will prove to be crucial for cardiovascular physicians striving to better care for patients facing this challenging combination of chronic diseases.
This study illustrates the use of logistic regression and machine learning methods, specifically random forest models, in health services research by analyzing outcomes for a cohort of patients with ...concomitant peripheral artery disease and diabetes mellitus.
Cohort study using fee-for-service Medicare beneficiaries in 2015 who were newly diagnosed with peripheral artery disease and diabetes mellitus. Exposure variables include whether patients received preventive measures in the 6 months following their index date: HbA1c test, foot exam, or vascular imaging study. Outcomes include any reintervention, lower extremity amputation, and death. We fit both logistic regression models as well as random forest models.
There were 88,898 fee-for-service Medicare beneficiaries diagnosed with peripheral artery disease and diabetes mellitus in our cohort. The rate of preventative treatments in the first six months following diagnosis were 52% (n = 45,971) with foot exams, 43% (n = 38,393) had vascular imaging, and 50% (n = 44,181) had an HbA1c test. The directionality of the influence for all covariates considered matched those results found with the random forest and logistic regression models. The most predictive covariate in each approach differs as determined by the t-statistics from logistic regression and variable importance (VI) in the random forest model. For amputation we see age 85 + (t = 53.17) urban-residing (VI = 83.42), and for death (t = 65.84, VI = 88.76) and reintervention (t = 34.40, VI = 81.22) both models indicate age is most predictive.
The use of random forest models to analyze data and provide predictions for patients holds great potential in identifying modifiable patient-level and health-system factors and cohorts for increased surveillance and intervention to improve outcomes for patients. Random forests are incredibly high performing models with difficult interpretation most ideally suited for times when accurate prediction is most desirable and can be used in tandem with more common approaches to provide a more thorough analysis of observational data.
Veteran satisfaction of care within the Veterans Affairs is typically very high. Yet recommendation ratings of VA medical center (VA) hospitals as measured by Hospital Consumer Assessment of ...Healthcare Providers and Systems are generally lower than non-VA hospitals.Therefore, it was our objective to assess Veteran satisfaction and recommendation scores and then examine whether satisfaction correlates to recommendation.
We identified all acute care VAs as our primary analytic cohort. As a comparator group, we also included all acute care academic hospitals (non-VAs), as designated by the Centers for Medicare Services. Using data from Hospital Consumer Assessment of Healthcare Providers and Systems and Strategic Analytics for Improvement and Learning (SAIL) Value Model, we collated patient satisfaction scores, as well as markers of surgical safety from Hospital Compare. We then analyzed the correlation within VAs and non-VAs, primarily focusing the relationship between the “would you recommend Hospital Rating” and subdomains of the “Overall Hospital Rating,” as well as a composite score of patient safety.
A total of 133 VAs and 1116 non-VAs were identified. Among VAs, the “Would you Recommend” hospital rating was significantly and positively correlated with markers of patient satisfaction including care transitions (Pearson's r = 0.59, P = 0.03), Nursing communication (Pearson's R 0.79, P = 0.001), and percent of primary care provider wait times less than 30 min (Pearson's r = 0.25, P = 0.01). VA-recommended scores were negatively correlated with factors such as time to emergency department discharge, and the “leaving the emergency department before being evaluated.” When looking at non-VAs, correlation directions were similar, albeit with stronger associations at almost every metric. While recommended scores correlated strongly to overall hospital ratings for both groups, VAs had no significant correlation between “would you recommend” and patient safety. However, there was a slight negative correlation between patient safety and “recommend” among non-VAs.
Although satisfiers and dissatisfiers of care appear similar between VAs and non-VAs, “would you recommend” is a far weaker marker of patient perceptions of safety and quality. These seemingly empathetic markers such as “would you recommend” should be used with caution as they may not address the fundamental question being asked.
Prior studies have described risk factors associated with amputation in patients with concomitant diabetes and peripheral arterial disease (DM/PAD). However, the association between the severity and ...extent of tissue loss type and amputation risk remains less well-described. We aimed to quantify the role of different tissue loss types in amputation risk among patients with DM/PAD, in the context of demographic, preventive, and socioeconomic factors.
Applying International Classification of Diseases (ICD)-9 and ICD-10 codes to Medicare claims data (2007-2019), we identified all patients with continuous fee-for-service Medicare coverage diagnosed with DM/PAD. Eight tissue loss categories were established using ICD-9 and ICD-10 diagnosis codes, ranging from lymphadenitis (least severe) to gangrene (most severe). We created a Cox proportional hazards model to quantify associations between tissue loss type and 1- and 5-year amputation risk, adjusting for age, race/ethnicity, sex, rurality, income, comorbidities, and preventive factors. Regional variation in DM/PAD rates and risk-adjusted amputation rates was examined at the hospital referral region level.
We identified 12,257,174 patients with DM/PAD (48% male, 76% White, 10% prior myocardial infarction, 30% chronic kidney disease). Although 2.2 million patients (18%) had some form of tissue loss, 10.0 million patients (82%) did not. The 1-year crude amputation rate (major and minor) was 6.4% in patients with tissue loss, and 0.4% in patients without tissue loss. Among patients with tissue loss, the 1-year any amputation rate varied from 0.89% for patients with lymphadenitis to 26% for patients with gangrene. The 1-year amputation risk varied from two-fold for patients with lymphadenitis (adjusted hazard ratio, 1.96; 95% confidence interval, 1.43-2.69) to 29-fold for patients with gangrene (adjusted hazard ratio, 28.7; 95% confidence interval, 28.1-29.3), compared with patients without tissue loss. No other demographic variable including age, sex, race, or region incurred a hazard ratio for 1- or 5-year amputation risk higher than the least severe tissue loss category. Results were similar across minor and major amputation, and 1- and 5-year amputation outcomes. At a regional level, higher DM/PAD rates were inversely correlated with risk-adjusted 5-year amputation rates (R2 = 0.43).
Among 12 million patients with DM/PAD, the most significant predictor of amputation was the presence and extent of tissue loss, with an association greater in effect size than any other factor studied. Tissue loss could be used in awareness campaigns as a simple marker of high-risk patients. Patients with any type of tissue loss require expedited wound care, revascularization as appropriate, and infection management to avoid amputation. Establishing systems of care to provide these interventions in regions with high amputation rates may prove beneficial for these populations.
The global burden of peripheral artery disease Eid, Mark A.; Mehta, Kunal; Barnes, J. Aaron ...
Journal of vascular surgery,
April 2023, 2023-04-00, 20230401, Volume:
77, Issue:
4
Journal Article
Peer reviewed
Open access
Previous efforts to characterize the burden of peripheral artery disease (PAD) have focused on national populations. A need for a more detailed analysis of how PAD impacts the global population has ...been identified. Our objective was to study in greater detail the global burden of PAD, including its impact on mortality, over the past three decades.
Using data and models from the Global Burden of Diseases, Injuries and Risk Factors Study, we estimated the prevalence, years of life lost, years lived with disability and disability-adjusted life-years (a measure accounting for incurred morbidity and mortality), attributable to PAD. We analyzed results over time and stratified by sex, age, and sociodemographic index (SDI) group. We compared PAD with other atherosclerosis-related conditions and assessed the contribution of risk factors to PAD disability-adjusted life-years.
We observed a 72% increase in the global prevalence of PAD from an estimated 65,764,499 persons in 1990 to 113,443,016 in 2019. Prevalence per 100,000 persons increased 13% and the prevalence per 100,000 age-standardized decreased 22%. Similar patterns were seen for years of live lost, mortality, years lived with disability, and disability-adjusted life-years. The prevalence and disability were higher among women, whereas mortality and years of life lost were higher among men. Disease burden increased with increasing SDI. These increases in PAD were in contrast with global trends for the overall burden of ischemic heart disease and ischemic stroke, which had decreasing prevalence and disease-related mortality over the same time frame. Overall, only approximately 55% of PAD disease burden could be attributed to identified risk factors, with tobacco use, diabetes, and hypertension being the three major contributors in all SDI groups.
The global prevalence and mortality associated with PAD has increased substantially, in contrast with other forms of ischemic cardiovascular disease. Globally, there is a growing need for vascular surgical resources to manage PAD, as well as public health efforts to address risk factors for this increasing health threat.
Epidemiology of peripheral artery disease Eid, Mark A.; Mehta, Kunal S.; Goodney, Philip P.
Seminars in vascular surgery,
March 2021, 2021-Mar, 2021-03-00, 20210301, Volume:
34, Issue:
1
Journal Article
Peer reviewed
Peripheral artery disease (PAD) is the clinical manifestation of atherosclerosis that primarily affects peripheral arteries within the lower extremities. In this brief review, we describe the ...epidemiology and burden of disease of PAD within the United States, particularly among high-risk populations. Although the prevalence of PAD continues to increase and is typically higher among the elderly as well as men, women in lower socioeconomic strata are affected at rates two times that of men. Among racial/ethnic groups, Black and African-American patients both experience higher rates of disease as well as lower rates of access to preventative care. Moreover, despite an overall decrease in amputation rates among all patients with PAD, high-risk populations remain disproportionally affected. Specifically, patients in rural areas, African-American and Native-American patients, and those of low socioeconomic status carry the highest risk of amputation. Efforts to improve care among PAD patients should target these high-risk populations and offer comprehensive, evidence-based preventative care. Wide adoption and integration of these practices into comprehensive care models may help to mitigate amputation in the highest-risk populations. As our treatment pathways continue to evolve, we must place further emphasis on patient input and quality of life as we work toward continual improvement in the care of patients with PAD.
In April 2021, the Information Blocking Rule (IBR) of the 21st Century Cures Act went into effect giving patients immediate access to notes, radiology reports, lab results, and surgical pathology. We ...aimed to examine changes in surgical providers’ perceptions of patient portal usage before and after its implementation.
We administered a 37-question survey prior to the implementation of the IBR and a 39-question follow-up survey 3 mo later. The survey was sent to all surgeons, advanced practice providers, and clinic nurses in our surgical department.
The response rate to pre surveys and post surveys was 33.7% and 30.7%, respectively. Providers’ preference for communication via the patient portal (compared to phone or in person) regarding lab, radiology, or pathology results remained similar. While there was an increase in messages received from patients, there was no difference in the self-reported time spent on the electronic health record (EHR). Prior to the implementation of the blocking rule, 75.8% of providers believed that the portal increased workload which decreased to 57.4% on our follow-up survey. About one-third of providers screened positive for burnout before (32%) which decreased slightly (27.4%).
Although 43.9% of providers reported the Cures Act had changed their practice, there was no difference in self-reported EHR usage, preferred method of interaction with patients, overall workload, or burnout. Initial concerns regarding the IBR's effect on job satisfaction, patient anxiety, and quality of care had lessened. Further exploration into how patients having immediate access to their EHRs has changed surgical practice is needed.
Hospital reviews posted online by patients are unsolicited and less structured than Hospital Consumer Assessment of Healthcare Providers and Systems surveys. The differences between online review ...platforms and their degrees of correlation with validated satisfaction and safety measures are unknown.
We identified 515 large acute care teaching hospitals in the United States. We collected patient satisfaction results and postsurgical patient safety indicators from Hospital Compare. We also collected hospital star ratings (1–5) from Facebook, Google, and Yelp. Mean ratings were compared with paired t tests. Concordance between ratings websites, Hospital Consumer Assessment of Healthcare Providers and Systems scores, and surgical safety indicators were assessed with Pearson’s correlation coefficient.
Mean Facebook ratings (3.81, interquartile range 3.5–4.3) were more favorable than Google (3.26, interquartile range 2.8–3.6) or Yelp (2.59, interquartile range 2.3–2.9). Facebook ratings were least strongly correlated with the Hospital Consumer Assessment of Healthcare Providers and Systems recommended hospital score (ρ = 0.356). Google was modestly correlated (ρ = 0.479), and Yelp was most strongly correlated (ρ = 0.500). The negative correlation between crowdsourced rating and composite safety indicator was too small to be meaningful on any platform.
There is variation between platforms in consumer ratings of hospitals. Ratings on Facebook are more favorable than Google or Yelp. These are independently correlated with Hospital Consumer Assessment of Healthcare Providers and Systems scores. These findings suggest that unstructured consumer reviews generally reflect similar directionality as Hospital Consumer Assessment of Healthcare Providers and Systems satisfaction scores. Users should be aware of the significant difference between platforms. Consumer ratings platforms are not consistently correlated with postsurgical patient safety indicators, so online ratings may not reflect the safety of surgical care received.
Postoperative bowel function is a common concern for patients undergoing a sigmoidectomy. We have previously demonstrated that patients with symptomatic bowel function preoperatively have substantial ...improvement at long-term follow-up. However, the effect of the operative approach on patient-reported bowel function is largely unknown. We aimed to evaluate the differences in long-term patient-reported bowel function after robotic or laparoscopic sigmoid colectomies for benign and malignant disease.
A retrospective analysis of a prospectively collected institutional database from July 2015 to July 2020. Patients included underwent a sigmoid colectomy for benign or malignant disease and completed the Colorectal Functional Outcome (COREFO) questionnaire at preoperative presentation, postoperatively, and long-term follow-up. Differences between preoperative and postoperative scores, as well as differences between the robotic and laparoscopic cohorts, were compared using paired t-tests.
A total of 169 patients met inclusion criteria with a median age of 61 y, and 55% of the patients underwent robotic sigmoid colectomy, with the most common diagnosis being diverticular disease (62%). There was no significant difference between the presentation, short-term, or long-term follow-up total COREFO scores or subdomains based on the surgical technique. Patients that present asymptomatic remain asymptomatic, while those that are symptomatic demonstrate improvements for both the robotic and laparoscopic groups.
Patient-reported long-term global bowel function does not appear to differ between patients who underwent elective robotic or laparoscopic sigmoid colectomy for benign or malignant disease. Patients that present asymptomatic remain asymptomatic, while those that are symptomatic demonstrate improvements, regardless of surgical technique.
•Robotic or Laparoscopic approach does not impact long-term bowel function.•Patients with symptomatic preoperative bowel function improve.•Patients with asymptomatic preoperative bowel function remain asymptomatic.
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