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Saratzis A, Zayed H, Buylova A, Rawlinson W, Veliu G, Siebert M. Economic impact of limb-salvage strategies in chronic limb-threatening ischaemia: modelling and budget impact study based on national registry data. BJS Open 2024; 8:zrae099. [PMID: 39291605 PMCID: PMC11408877 DOI: 10.1093/bjsopen/zrae099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 07/15/2024] [Indexed: 09/19/2024] Open
Abstract
BACKGROUND Missed opportunities to reduce numbers of primary major lower-limb amputation and increase limb-salvage procedures when treating chronic limb-threatening ischaemia have previously been identified in the literature. However, the potential economic savings for healthcare providers when salvaging a chronic limb-threatening ischaemia-affected limb have not been well documented. METHODS A model using National Health Service healthcare usage and cost data for 1.6 million individuals and averaged numbers of primary surgical procedures for chronic limb-threatening ischaemia from England and Wales in 2019-2021 was created to perform a budget impact analysis. Two scenarios were tested: the averaged national rates of major lower-limb amputation (above the ankle joint), angioplasty, open bypass surgery or arterial endarterectomy in the National Vascular Registry (current scenario); and revascularization rates adjusted based on the lowest amputation rate reported by the National Vascular Registry at the time of the study (hypothetical scenario). The primary outcome was the net impact on costs to the National Health Service over 12 months after the index procedure. RESULTS In the current scenario, the proportions of different index procedures were 10% for lower-limb major amputation, 55% for angioplasty, 25% for open bypass surgery and 10% for arterial endarterectomy. In the hypothetical scenario, the procedure rates were 3% for major lower-limb amputation, 59% for angioplasty, 27% for open bypass surgery and 11% for arterial endarterectomy. For 16 025 index chronic limb-threatening ischaemia procedures, the total care cost in the current scenario was €243 924 927. In the hypothetical scenario, costs would be reduced for index procedures (-€10 013 814), community care (-€633 943) and major cardiovascular events (-€383 407), and increased for primary care (€59 827), outpatient appointments (€120 050) and subsequent chronic limb-threatening ischaemia-related surgery (€1 179 107). The net saving to the National Health Service would be €9 645 259. CONCLUSION A shift away from primary major lower-limb amputation towards revascularization could lead to substantial savings for the National Health Service without major cost increases later in the care pathway, indicating that care decisions taken in hospitals have wider benefits.
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Affiliation(s)
- Athanasios Saratzis
- Department of Cardiovascular Sciences, National Institute for Health and Care Research (NIHR) Biomedical Research Centre (BRC), Leicester, UK
| | - Hany Zayed
- School of Cardiovascular Medicine and Metabolic Sciences, King's College London, London, UK
- Department of Vascular Surgery, Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Anna Buylova
- National Health Service Health Economics Unit, NHS Midlands and Lancashire Commissioning Support Unit, Stoke on Trent, UK
| | - William Rawlinson
- National Health Service Health Economics Unit, NHS Midlands and Lancashire Commissioning Support Unit, Stoke on Trent, UK
| | - Giota Veliu
- Abbott Health Economics & Reimbursement Department, Zaventem, Belgium
| | - Markus Siebert
- Abbott Health Economics & Reimbursement Department, Zaventem, Belgium
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Tsolaki E, Traina L, Savriè C, Guerzoni F, Napoli N, Manfredini R, Taddia MC, Manfredini F, Lamberti N. To Treat or not to Treat? The Fate of Patients with Intermittent Claudication Following Different Therapeutic Options. Rev Cardiovasc Med 2024; 25:229. [PMID: 39076305 PMCID: PMC11270107 DOI: 10.31083/j.rcm2506229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/21/2024] [Accepted: 04/03/2024] [Indexed: 07/31/2024] Open
Abstract
Background Peripheral artery disease (PAD) is recognized as a significant contributor to the public health burden in the cardiovascular field and has a significant rate of morbidity and mortality. In the intermediate stages, exercise therapy is recommended by the guidelines, although supervised programs are scarcely available. This single-center observational study aimed to evaluate the long-term outcomes of patients with PAD and claudication receiving optimal medical care and follow-up or revascularization procedures or structured home-based exercise. Methods The records of 1590 PAD patients with claudication were assessed at the Vascular Surgery Unit between 2008 and 2017. Based on the findings of the recruitment visit, patients were assigned to one of the three following groups according to the available guidelines: Revascularization (Rev), structured exercise therapy (Ex), or control (Co). The exercise program was prescribed at the hospital and executed at home with two daily 10-minute interval walking sessions at a pain-free speed. The number and date of deaths, all-cause hospitalizations, and peripheral revascularizations for 5 years were collected from the Emilia-Romagna regional database. Results At entry, 137 patients underwent revascularization; 1087 patients were included in the Ex group, and 366 were included in the Co group. At baseline, patients in the Rev group were significantly younger and had fewer comorbidities (p < 0.001). A propensity score matching analysis was performed, and three balanced subgroups of 119 patients were each created. The mortality rate was significantly (p < 0.001) greater in the Co (45%) group than in the Rev (11%) and Ex (11%) groups, as was the incidence of all-cause hospitalizations (Co: 95%; Rev 56%; Ex 60%; p < 0.001). There were no differences in peripheral revascularizations (Co: 19%; Rev: 17%; Ex 11%). Conclusions In PAD patients with claudication, both revascularization procedures and structured home-based exercise sessions are associated with better long-term clinical outcomes than walking advice and follow-up only.
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Affiliation(s)
- Elpiniki Tsolaki
- Unit of Vascular and Endovascular Surgery, University Hospital of Ferrara, 44124 Ferrara, Italy
| | - Luca Traina
- Unit of Vascular and Endovascular Surgery, University Hospital of Ferrara, 44124 Ferrara, Italy
| | - Caterina Savriè
- Clinica Medica Unit, University Hospital of Ferrara, 44124 Ferrara, Italy
| | - Franco Guerzoni
- Health Statistics Unit, University Hospital of Ferrara, 44124 Ferrara, Italy
| | - Nicola Napoli
- Health Statistics Unit, University Hospital of Ferrara, 44124 Ferrara, Italy
| | - Roberto Manfredini
- Clinica Medica Unit, University Hospital of Ferrara, 44124 Ferrara, Italy
- Department of Medical Sciences, University of Ferrara, 44124 Ferrara, Italy
| | - Maria Cristina Taddia
- Unit of Vascular and Endovascular Surgery, University Hospital of Ferrara, 44124 Ferrara, Italy
| | - Fabio Manfredini
- Department of Neuroscience and Rehabilitation, University of Ferrara, 44121 Ferrara, Italy
- Program of Vascular Rehabilitation and Exercise Medicine, University Hospital of Ferrara, 44124 Ferrara, Italy
| | - Nicola Lamberti
- Department of Neuroscience and Rehabilitation, University of Ferrara, 44121 Ferrara, Italy
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Hoitz N, Kraima A, Fioole B, Mees B, de Borst GJ, Ünlü Ç. Surveillance After Surgical and Endovascular Treatment for Peripheral Artery Disease: a Dutch Survey. Eur J Vasc Endovasc Surg 2024; 67:980-986. [PMID: 38159674 DOI: 10.1016/j.ejvs.2023.12.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 10/18/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024]
Abstract
OBJECTIVE At present, there is no clear, optimal approach to surveillance after invasive treatment of peripheral artery disease (PAD) in terms of modality, duration, clinical benefit, and cost effectiveness. The ongoing debate on the clinical benefit and cost effectiveness of standard surveillance creates a clear knowledge gap and may result in overtreatment or undertreatment. In this study, a survey was conducted among vascular surgeons in the Netherlands to assess the currently applied surveillance programmes. METHODS All vascular surgeons from the Dutch Society for Vascular Surgery received an online survey on follow up after open and endovascular revascularisation in patients with PAD. Surveillance was defined as at least one follow up visit after intervention with or without additional imaging or ankle brachial index (ABI) measurement. Ten types of PAD intervention were surveyed. RESULTS Surveys were returned by 97 (46.2%) of 210 vascular surgeons, and 76% reported using a routine follow up protocol after an invasive intervention. Clinical follow up only is most commonly performed after femoral endarterectomy (53%). After peripheral bypass surgery, clinical follow up only is applied rarely (4 - 8%). In six of the 10 interventions surveyed, duplex ultrasound (DUS) was the most used imaging modality for follow up. After bypass surgery, 76 - 86% of vascular surgeons perform DUS with or without ABI measurement. After endovascular interventions, 21 - 60% performed DUS surveillance. Lifelong surveillance is most often applied after aortobifemoral bypass (57%). Surveillance frequency and duration vary greatly within the same intervention. Frequencies range from every three or six months to annually. Duration ranges from one time surveillance to lifelong follow up. CONCLUSION There is significant practice variation in surveillance after surgical and endovascular treatment of patients with PAD in the Netherlands. Prospective studies to evaluate treatment outcomes and to define the clinical need and cost effectiveness of standardised surveillance programmes for patients with PAD are recommended.
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Affiliation(s)
- Nathalie Hoitz
- Department of Vascular Surgery, Northwest Clinics, Alkmaar, the Netherlands.
| | - Annelot Kraima
- Department of Vascular Surgery, Northwest Clinics, Alkmaar, the Netherlands
| | - Bram Fioole
- Department of Vascular Surgery, Maasstad Hospital, Rotterdam, the Netherlands
| | - Barend Mees
- Department of Vascular Surgery, MUMC+, Maastricht, the Netherlands
| | - Gert J de Borst
- Department of Vascular Surgery, UMCU, Utrecht, the Netherlands
| | - Çağdaş Ünlü
- Department of Vascular Surgery, Northwest Clinics, Alkmaar, the Netherlands
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Farber A, Menard MT, Bonaca MP, Bradbury A, Conte MS, Debus ES, Eldrup N, Goodney P, Gupta PC, Hinchliffe RJ, Houlind KC, Kolh P, Kum SWC, Nordanstig J, Parikh SA, Patel MR, Patrone L, Sillesen H, Strong MB, Varcoe RL, Vega de Ceniga M, Venermo MA, Rosenfield K. BEST-CLI International Collaborative: planning a better future for patients with chronic limb-threatening ischaemia globally. Br J Surg 2024; 111:znad413. [PMID: 38294083 PMCID: PMC10828928 DOI: 10.1093/bjs/znad413] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 02/01/2024]
Affiliation(s)
- Alik Farber
- Division of Vascular and Endovascular Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Matthew T Menard
- Division of Vascular and Endovascular Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Marc P Bonaca
- Division of Cardiovascular Medicine, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Andrew Bradbury
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Michael S Conte
- Division of Vascular and Endovascular Surgery, University of California, SanFrancisco, California, USA
| | - E Sebastian Debus
- Department for Vascular Medicine, University Heart & Vascular Center Hamburg, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Nikolaj Eldrup
- Department of Vascular Surgery, Rigshospitalet, Copenhagen University, Copenhagen, Denmark
| | - Philip Goodney
- Heart and Vascular Center, Dartmouth Hitchcock Medical Center, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire, USA
| | - Prem C Gupta
- Department of Vascular and Endovascular Surgery, Care Hospital, Banjara Hills, Hyderabad, India
| | | | - Kim C Houlind
- Department of Vascular Surgery, Kolding Hospital, Kolding, Denmark
- University of Southern Denmark, Kolding, Denmark
| | - Philippe Kolh
- Department of Biomedical and Preclinical Sciences, University of Liège, Liège, Belgium
- GIGA Cardiovascular Sciences, University of Liège, Liège, Belgium
| | | | - Joakim Nordanstig
- Department of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Sahil A Parikh
- Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Manesh R Patel
- Division of Cardiology, Duke Clinical Research Institute, Duke University, Durham, North Carolina, USA
| | - Lorenzo Patrone
- West London Vascular and Interventional Centre, London North West University NHS Trust, London, UK
| | | | - Michael B Strong
- Division of Vascular and Endovascular Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Ramon L Varcoe
- Department of Surgery, Prince of Wales Hospital and Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Melina Vega de Ceniga
- Department of Angiology and Vascular Surgery, Hospital Universitario de Galdako-Usansolo, Galdakao, Spain
- University of the Basque Country (UPV/EHU), Leioa, Spain
- Research Institute BioBizkaia, Barakaldo, Spain
| | - Maarit A Venermo
- Department of Vascular Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Kenneth Rosenfield
- Section of Vascular Medicine and Intervention Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
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Wang G, Li H, Chen B, Guo P, Zhang H. Amputation and limb salvage following endovascular and open surgery for the treatment of peripheral artery illnesses: A meta-analysis. Int Wound J 2023; 20:3558-3566. [PMID: 37328950 PMCID: PMC10588360 DOI: 10.1111/iwj.14229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 04/24/2023] [Accepted: 04/28/2023] [Indexed: 06/18/2023] Open
Abstract
A meta-analysis investigation was executed to measure the outcome of endovascular surgery (ES) and open surgery (OS) for the management of peripheral artery diseases (PADs) on amputation and limb salvage (LS). A comprehensive literature inspection till February 2023 was applied and 3451 interrelated investigations were reviewed. The 31 chosen investigations enclosed 19 948 individuals with PADs were in the chosen investigations' starting point, 8861 of them were utilising ES, and 11 087 were utilising OS. Odds ratio (OR) in addition to 95% confidence intervals (CIs) were utilised to compute the value of the effect of ES and OS for the management of PADs on amputation and LS by the dichotomous approaches and a fixed or random model. ES had significantly lower amputation (OR, 0.80; 95% CI, 0.68-0.93, P = 0.005) compared with those with OS in individuals with PADs. No significant difference was found between ES and OS in 30-day LS (OR, 0.95; 95% CI, 0.64-1.42, P = 0.81), 1-year LS (OR, 1.06; 95% CI, 0.81-1.39, P = 0.68), and 3-year LS (OR, 0.86; 95% CI, 0.61-1.19, P = 0.36) in individuals with PADs. ES had significantly lower amputation, 30-day LS, 1-year LS, and 3-year LS compared with those with OS in individuals with PADs. However, care must be exercised when dealing with its values because of the low sample size of some of the nominated investigations for the meta-analysis.
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Affiliation(s)
- Guohua Wang
- Department of General Surgery IIXinxiang Central HospitalXinxiangChina
| | - Huipeng Li
- Department of General Surgery IIXinxiang Central HospitalXinxiangChina
| | - Baoxing Chen
- Department of General Surgery IIXinxiang Central HospitalXinxiangChina
| | - Pengwei Guo
- Department of General Surgery IIXinxiang Central HospitalXinxiangChina
| | - Hua Zhang
- Department of General Surgery IIXinxiang Central HospitalXinxiangChina
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Association between home-based exercise using a pedometer and clinical prognosis after endovascular treatment in patients with peripheral artery disease. J Cardiol 2023; 81:222-228. [PMID: 36126908 DOI: 10.1016/j.jjcc.2022.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 08/20/2022] [Accepted: 08/31/2022] [Indexed: 01/22/2023]
Abstract
BACKGROUND Exercise therapy following endovascular treatment (EVT) is important for patients with peripheral artery disease (PAD); however, continuous exercise therapy is difficult to be performed in clinical practice. This study aimed to investigate the association between the implementation of home-based exercise using pedometers after EVT and 1-year clinical outcomes. METHODS This multicenter observational prospective cohort registry included patients with PAD complaining of intermittent claudication who underwent EVT for aortoiliac and/or femoropopliteal artery lesions between January 2016 and March 2019. Patients were instructed to perform home-based exercises using a specific pedometer after EVT. The study population was divided into good and poor recording groups according to the frequency of the pedometer measurements. The good recording group was defined as those who completed ≥50 % of the prescribed daily pedometer recording during the follow-up period. The poor recording group was defined as those with an inability to use a pedometer and/or who completed <50 % of the prescribed daily pedometer recordings. The primary outcome was 1-year major adverse events (MAE), defined as a composite of all-cause death, non-fatal myocardial infarction, non-fatal stroke, target vessel revascularization, and major amputation of the target limb. RESULTS The mean age was 74.4 years; 78 % were male. A total of 623 lesions were analyzed (58.7 % aortoiliac, 41.3 % femoropopliteal). At 1 year, a lower cumulative incidence of MAE was observed in the good recording group compared to that in the poor recording group [10/233 (4.3 %) vs. 35/267 (13.7 %) patients, respectively; p < 0.001]. Multivariate Cox regression analysis showed that patients in the good recording group had a lower hazard ratio for 1-year MAE (0.33; 95 % confidence interval, 0.16-0.68; p = 0.004) than that in the poor recording group. CONCLUSIONS Good self-recording of pedometer measurements was associated with favorable prognosis in patients with PAD following EVT.
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Wolosker N, Silva MFAD, Portugal MFC, Stabellini N, Zerati AE, Szlejf C, Amaro Junior E, Teivelis MP. Epidemiological analysis of lower limb revascularization for peripheral arterial disease over 12 years on the public healthcare system in Brazil. J Vasc Bras 2022; 21:e20210215. [PMID: 36187218 PMCID: PMC9477476 DOI: 10.1590/1677-5449.202102152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 06/29/2022] [Indexed: 11/21/2022] Open
Abstract
Abstract Background Worldwide, peripheral arterial disease (PAD) is a disorder with high morbidity, affecting more than 200 million people. Objectives Our objective was to analyze surgical treatment for PAD provided on the Brazilian Public Healthcare System over 12 years using publicly available data. Methods The study was conducted with analysis of data available on the Brazilian Health Ministry’s database platform, assessing distributions of procedures and techniques over the years and their associated mortality and costs. Results A total of 129,424 procedures were analyzed (performed either for claudication or critical ischemia, proportion unknown). The vast majority of procedures were endovascular (65.49%) and this disproportion exhibited a rising trend (p<0.001). There were 3,306 in-hospital deaths (mortality of 2.55%), with lower mortality in the endovascular group (1.2% vs. 5.0%, p=0.008). The overall governmental expenditure on these procedures was U$ 238,010,096.51, and endovascular procedures were on average significantly more expensive than open surgery (U$ 1,932.27 vs. U$ 1,517.32; p=0.016). Conclusions Lower limb revascularizations were performed on the Brazilian Public Healthcare System with gradually increasing frequency from 2008 to 2019. Endovascular procedures were vastly more common and were associated with lower in-hospital mortality rates, but higher procedure costs.
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Affiliation(s)
- Nelson Wolosker
- Faculdade Israelita de Ciências da Saúde Albert Einstein, Brasil; Universidade de São Paulo, Brasil
| | | | | | | | | | | | - Edson Amaro Junior
- Universidade de São Paulo, Brasil; Hospital Israelita Albert Einstein, Brasil
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Solimeno G, Salcuni M, Capparelli G, Valitutti P. Technical perspectives in the management of complex infrainguinal arterial chronic total occlusions. J Vasc Surg 2021; 75:732-739. [PMID: 34601045 DOI: 10.1016/j.jvs.2021.09.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 09/03/2021] [Indexed: 01/22/2023]
Abstract
BACKGROUND The prevalence and incidence of peripheral arterial disease have been increasing in the general population. Although limited data are available on the epidemiology of chronic limb-threatening ischemia, it likely represents <10% of all patients with peripheral arterial disease. In the general population, its overall prevalence has been 0.74%. This specific subgroup of patients can have severe disease presentations. Their symptoms often correlate with a specific infrainguinal morphologic pattern known as chronic total occlusion (CTO). CTO will often be difficult to cross in a standard endovascular fashion. In previous years, several techniques have been developed to overcome the limitations of standard antegrade endoluminal or subintimal approaches, if these approaches fail. METHODS We have described the advanced techniques, including subintimal techniques, such as crush balloon, parallel wire, SAFARI (subintimal arterial flossing with antegrade and retrograde intervention), and double-balloon techniques, in detail. Furthermore, we have described a homemade reentry device, which can be used to provide access to the distal true lumen in extreme, uncrossable cases. Retrograde approaches comprise several techniques developed from interventional cardiology techniques. Finally, we have described transcollateral and pedal-plantar loop techniques in detail. RESULTS These techniques allow endovascular surgeons to successfully encounter even complex anatomies, which will be present in ∼80% of all CTOs. In the present report, we have reviewed all these advanced techniques, correlated the effectiveness of each with the proximal and distal cap morphologic features, and discussed the economic consequences of the endovascular approach considering the costs vs the disease progression and the materials used during the procedures. CONCLUSIONS Effective use of the advanced techniques we have described is of paramount importance because only 20% of patients will have a CTO that is crossable using standard techniques. Thus, the use of these techniques can help endovascular surgeons increase their success for patients with complex anatomic patterns. Furthermore, the possibility of treating these CTOs using only guidewires and catheters will reduce the costs of the procedures. However, their use in clinical practice still must be standardized.
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Affiliation(s)
- Giovanni Solimeno
- Division of Vascular Surgery, Mediterranea Cardiocentro, Naples, Italy.
| | - Matteo Salcuni
- Division of Vascular Surgery, Hyppocratica Villa del Sole, Salerno, Italy
| | - Gerardo Capparelli
- Division of Vascular Surgery, Hyppocratica Villa del Sole, Salerno, Italy
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9
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Ruth SRA, Kim MG, Oda H, Wang Z, Khan Y, Chang J, Fox PM, Bao Z. Post-surgical wireless monitoring of arterial health progression. iScience 2021; 24:103079. [PMID: 34568798 PMCID: PMC8449246 DOI: 10.1016/j.isci.2021.103079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/10/2021] [Accepted: 08/29/2021] [Indexed: 11/29/2022] Open
Abstract
Early detection of limb ischemia, strokes, and heart attacks may be enabled via long-term monitoring of arterial health. Early stenosis, decreased blood flow, and clots are common after surgical vascular bypass or plaque removal from a diseased vessel and can lead to the above diseases. Continuous arterial monitoring for the early diagnosis of such complications is possible by implanting a sensor during surgery that is wirelessly monitored by patients after surgery. Here, we report the design of a wireless capacitive sensor wrapped around the artery during surgery for continuous post-operative monitoring of arterial health. The sensor responds to diverse artery sizes and extents of occlusion in vitro to at least 20 cm upstream and downstream of the sensor. It demonstrated strong capability to monitor progression of arterial occlusion in human cadaver and small animal models. This technology is promising for wireless monitoring of arterial health for pre-symptomatic disease detection and prevention.
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Affiliation(s)
- Sara R A Ruth
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | - Min-Gu Kim
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | - Hiroki Oda
- Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA.,Division of Plastic Surgery, Veterans Affairs Palo Alto, Palo Alto, CA, USA
| | - Zhen Wang
- Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA.,Division of Plastic Surgery, Veterans Affairs Palo Alto, Palo Alto, CA, USA
| | - Yasser Khan
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
| | - James Chang
- Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA.,Division of Plastic Surgery, Veterans Affairs Palo Alto, Palo Alto, CA, USA
| | - Paige M Fox
- Division of Plastic and Reconstructive Surgery, Stanford University School of Medicine, Stanford, CA, USA.,Division of Plastic Surgery, Veterans Affairs Palo Alto, Palo Alto, CA, USA
| | - Zhenan Bao
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
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Outcomes and Costs of Open and Endovascular Revascularisation for Chronic Limb Ischaemia in an Australian Cohort. Heart Lung Circ 2021; 30:1552-1561. [PMID: 34045140 DOI: 10.1016/j.hlc.2021.04.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 03/26/2021] [Accepted: 04/25/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVE The costs of open and endovascular revascularisation to treat peripheral artery disease (PAD) have not been fully established. This study examined the costs of both the index admission and any readmissions to hospital within 30 days of discharge for people having revascularisation at a single centre in Australia. METHODS This was a retrospective analysis of prospectively collected data. Eligible participants were those presenting with chronic limb ischaemia requiring revascularisation between 2002 and 2017. Generalised linear modelling was used to estimate mean (95% confidence interval [95% CI]) hospital costs for the index and readmission hospital treatments. RESULTS A total of 302 participants presenting with intermittent claudication (n=219; 72.5%) or chronic limb threatening ischaemia (n=83; 27.5%) treated by open (n=116; 38.4%) or endovascular (n=186; 61.6%) revascularisation were included. Forty-eight (48) (15.9%) participants were readmitted within 30 days of discharge from their index admission. The mean estimated index admission hospital cost was AUD$13,827 (95% CI, $11,935-$15,818) per person. This cost was significantly greater for open as compared to endovascular revascularisation (p<0.001). The mean estimated hospital cost was AUD$15,324 ($10,944-$19,966) per person readmitted. When comparing participants treated before and after 2010, the total hospital costs decreased, mainly due to decreased lengths of hospital stay for open procedures. CONCLUSIONS In this study the hospital costs were less for endovascular than open revascularisation of chronic limb ischaemia. Costs decreased over time. Readmission is an important contributor to the overall costs of peripheral revascularisation.
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Ilonzo N, Goldberger C, Hwang S, Rao A, Faries P, Marin M, Tadros R. The Effect of Patient and Hospital Characteristics on Total Costs of Peripheral Bypass in New York State. Vasc Endovascular Surg 2021; 55:434-440. [PMID: 33590811 DOI: 10.1177/1538574421993317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
INTRODUCTION With the aging U.S. population, peripheral vascular procedures will become increasingly common. The objective of this study is to characterize the factors associated with increased total costs after peripheral bypass surgery. METHODS Data for 34,819 patients undergoing peripheral bypass surgery in NY State were extracted using the Statewide Planning and Research Cooperative System (SPARCS) database for years 2009-2017. Patient demographics, All Patient Refined Diagnostic Related Groups (APR) severity score, mortality risk, hospital volume, and length of stay data were collected. Primary outcomes were total costs and length of stay. Data were analyzed using univariate and multivariate analysis. RESULTS 28.1% of peripheral bypass surgeries were performed in New York City. 7.9% of patients had extreme APR severity of illness whereas 32.0% had major APR severity of illness. 6.3% of patients had extreme risk of mortality and 1 in every 5 patients (20%) had major risk of mortality. 24.9% of patients were discharged to a facility. The mean length of stay (LOS) was 9.9 days. Patient LOS of 6-11 days was associated with +$2,791.76 total costs. Mean LOS of ≥ 12 days was associated with + $27,194.88 total costs. Multivariate analysis revealed risk factors associated with an admission listed in the fourth quartile of total costs (≥$36,694.44) for peripheral bypass surgery included NYC location (2.82, CI 2.62-3.04), emergency surgery (1.12, CI 1.03-1.22), extreme APR 2.08, 1.78-2.43, extreme risk of mortality (2.73, 2.34-3.19), emergency room visit (1.68, 1.57-1.81), discharge to a facility (1.27, CI 1.15-1.41), and LOS in the third or fourth quartile (11.09, 9.87-12.46). CONCLUSION The cost of peripheral bypass surgery in New York State is influenced by a variety of factors including LOS, patient comorbidity and disease severity, an ER admission, and discharge to a facility.
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Affiliation(s)
- Nicole Ilonzo
- Division of Vascular Surgery, Department of Surgery, 5925The Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Cody Goldberger
- Division of Vascular Surgery, Department of Surgery, 5925The Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Songhon Hwang
- Division of Vascular Surgery, Department of Surgery, 5925The Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Ajit Rao
- Division of Vascular Surgery, Department of Surgery, 5925The Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Peter Faries
- Division of Vascular Surgery, Department of Surgery, 5925The Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Michael Marin
- Division of Vascular Surgery, Department of Surgery, 5925The Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Rami Tadros
- Division of Vascular Surgery, Department of Surgery, 5925The Icahn School of Medicine at Mount Sinai, New York, NY, USA
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Amlani V, Falkenberg M, Nordanstig J. The current status of drug-coated devices in lower extremity peripheral artery disease interventions. Prog Cardiovasc Dis 2021; 65:23-28. [PMID: 33587964 DOI: 10.1016/j.pcad.2021.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 02/08/2021] [Indexed: 11/18/2022]
Abstract
Lower limb peripheral artery disease is a leading cause of cardiovascular disease morbidity and mortality. Endovascular revascularization is often indicated to improve walking function and to prevent limb loss but restenosis in the treated vessel segment remains a concern that limits the overall effectiveness of the treatment. The most promising technique to prevent restenosis is the use of drug-coated devices, and the most common drug used to coat lower limb balloon angioplasty balloons and stents is paclitaxel. A systematic review and meta-analysis in 2018 reported a possible increase in late mortality attributable to paclitaxel-coated devices. Since then, their use has been brought into question. Here, we present an update of data focusing on the efficacy and safety of paclitaxel-coated devices in lower limb treatment applications. While paclitaxel-coated devices appear to reduce restenosis rates it is still unclear how these surrogate marker improvements translate to direct patient benefits and uncertainty remains as to whether paclitaxel-coated devices confer an increased risk of long-term mortality. Available randomized clinical data is hampered by trial heterogeneity, insufficient power, potential attrition bias and the lack of a plausible mechanistic explanation. An important step forward is that the ongoing trials that were temporarily halted due to the Katsanos et al. report have now both commenced recruitment and may ultimately resolve this clinical dilemma by virtue of their larger sample sizes. Other possible ways forward are the ongoing investigation of alternative anti-proliferative coating agents and use of new sophisticated vascular imaging techniques to more clearly identify patients at risk of restenosis already in the preoperative setting.
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Affiliation(s)
- Vishal Amlani
- Department of Vascular Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden; Institute of Medicine, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
| | - Mårten Falkenberg
- Department of Radiology, Institute of Clinical Sciences, Sahlgrenska University Hospital and Academy, Gothenburg, Sweden
| | - Joakim Nordanstig
- Department of Vascular Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden; Institute of Medicine, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Shannon AH, de Grijs DP, Goudreau BJ, Mehaffey JH, Cullen JM, Williams C, Robinson WP. Impact of the Timing of Foot Tissue Resection on Outcomes in Patients Undergoing Revascularization for Chronic Limb-Threatening Ischemia. Angiology 2020; 72:159-165. [PMID: 32945173 DOI: 10.1177/0003319720958554] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The objective of this study is to describe utilization of revascularization and tissue resection in patients with chronic limb-threatening ischemia (CLTI) and determine whether the timing of resection impacts outcomes. Revascularizations for CLTI were queried (ACS-NSQIP 2011-2015). Outcomes included 30-day major adverse limb events (MALE), major adverse cardiac events (MACE), length of stay (LOS), operative time, 30-day readmissions, and wound infections. Groups included revascularization alone, revascularization/tissue resection during the same procedure (concurrent), or revascularization/delayed tissue resection (delayed). Resections were debridement or transmetatarsal amputations. Multivariate logistic regression determined risk-adjusted effects of tissue resection on outcomes. There was no difference in overall 30-day MACE or MALE between groups (P = .70 and P = .35, respectively). Length of stay (6.1 days revascularization alone vs 7.8 days concurrent vs 8.7 days delayed, P < .0001) was longer in patients who underwent any tissue resection. Highest 30-day readmission and operative time was the concurrent group (P = .02 and P < .0001, respectively). Wound infection was highest in the delayed group (1.4% revascularization alone vs 1.3% concurrent vs 6.2% delayed, P < .0001). After risk adjustment, timing of resection did not impact LOS for concurrent and delayed groups compared to revascularization alone (both P < .0001). Debridement and minor amputations can be done concurrently in patients undergoing revascularization for CLTI.
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Affiliation(s)
- Alexander H Shannon
- Department of Surgery, 12350University of Virginia, Charlottesville, VA, USA
| | - Derek P de Grijs
- Division of Vascular and Endovascular Surgery, 12350University of Virginia, Charlottesville, VA, USA
| | | | - J Hunter Mehaffey
- Department of Surgery, 12350University of Virginia, Charlottesville, VA, USA
| | - J Michael Cullen
- Department of Surgery, 12350University of Virginia, Charlottesville, VA, USA
| | - Carlin Williams
- Division of Vascular and Endovascular Surgery, 12350University of Virginia, Charlottesville, VA, USA
| | - William P Robinson
- Division of Vascular Surgery, East Carolina University, Greenville, NC, USA
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Abola MTB, Golledge J, Miyata T, Rha SW, Yan BP, Dy TC, Ganzon MSV, Handa PK, Harris S, Zhisheng J, Pinjala R, Robless PA, Yokoi H, Alajar EB, Bermudez-delos Santos AA, Llanes EJB, Obrado-Nabablit GM, Pestaño NS, Punzalan FE, Tumanan-Mendoza B. Asia-Pacific Consensus Statement on the Management of Peripheral Artery Disease: A Report from the Asian Pacific Society of Atherosclerosis and Vascular Disease Asia-Pacific Peripheral Artery Disease Consensus Statement Project Committee. J Atheroscler Thromb 2020; 27:809-907. [PMID: 32624554 PMCID: PMC7458790 DOI: 10.5551/jat.53660] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 11/01/2019] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Peripheral artery disease (PAD) is the most underdiagnosed, underestimated and undertreated of the atherosclerotic vascular diseases despite its poor prognosis. There may be racial or contextual differences in the Asia-Pacific region as to epidemiology, availability of diagnostic and therapeutic modalities, and even patient treatment response. The Asian Pacific Society of Atherosclerosis and Vascular Diseases (APSAVD) thus coordinated the development of an Asia-Pacific Consensus Statement (APCS) on the Management of PAD. OBJECTIVES The APSAVD aimed to accomplish the following: 1) determine the applicability of the 2016 AHA/ACC guidelines on the Management of Patients with Lower Extremity Peripheral Artery Disease to the Asia-Pacific region; 2) review Asia-Pacific literature; and 3) increase the awareness of PAD. METHODOLOGY A Steering Committee was organized to oversee development of the APCS, appoint a Technical Working Group (TWG) and Consensus Panel (CP). The TWG appraised the relevance of the 2016 AHA/ACC PAD Guideline and proposed recommendations which were reviewed by the CP using a modified Delphi technique. RESULTS A total of 91 recommendations were generated covering history and physical examination, diagnosis, and treatment of PAD-3 new recommendations, 31 adaptations and 57 adopted statements. This Asia-Pacific Consensus Statement on the Management of PAD constitutes the first for the Asia-Pacific Region. It is intended for use by health practitioners involved in preventing, diagnosing and treating patients with PAD and ultimately the patients and their families themselves.
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Affiliation(s)
- Maria Teresa B Abola
- Department of Clinical Research, Philippine Heart Center and University of the Philippines College of Medicine, Metro Manila, Philippines
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia
| | - Tetsuro Miyata
- Vascular Center, Sanno Hospital and Sanno Medical Center, Tokyo, Japan
| | - Seung-Woon Rha
- Dept of Cardiology, Internal Medicine, College of Medicine, Korea University; Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Bryan P Yan
- Division of Cardiology, Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Timothy C Dy
- The Heart Institute, Chinese General Hospital and Medical Center, Manila, Philippines
| | | | | | - Salim Harris
- Neurovascular and Neurosonology Division, Neurology Department, Universitas Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | | | | | | | - Hiroyoshi Yokoi
- Cardiovascular Center, Fukuoka Sanno Hospital; International University of Health and Welfare, Fukuoka, Japan
| | - Elaine B Alajar
- Section of Cardiology, Department of Internal Medicine, Manila Doctors Hospital; University of the Philippines College of Medicine, Manila, Philippines
| | | | - Elmer Jasper B Llanes
- Division of Cardiology, Department of Medicine, College of Medicine, University of the Philippines Philippine General Hospital, Manila, Philippines
| | | | - Noemi S Pestaño
- Section of Cardiology, Department of Internal Medicine, Manila Doctors Hospital, Manila, Philippines
| | - Felix Eduardo Punzalan
- Division of Cardiology, Department of Medicine, College of Medicine, University of the Philippines; Philippine General Hospital, Manila, Philippines
| | - Bernadette Tumanan-Mendoza
- Department of Clinical Epidemiology, University of the Philippines College of Medicine, Manila, Philippines
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15
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Rockley M, Kobewka D, Kunkel E, Nagpal S, McIsaac DI, Thavorn K, Forster A. Characteristics of high-cost inpatients with peripheral artery disease. J Vasc Surg 2020; 72:250-258.e8. [DOI: 10.1016/j.jvs.2019.09.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 09/24/2019] [Indexed: 01/18/2023]
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Ryder JR, Xu P, Inge TH, Xie C, Jenkins TM, Hur C, Lee M, Choi J, Michalsky MP, Kelly AS, Urbina EM. Thirty-Year Risk of Cardiovascular Disease Events in Adolescents with Severe Obesity. Obesity (Silver Spring) 2020; 28:616-623. [PMID: 32090509 PMCID: PMC7045971 DOI: 10.1002/oby.22725] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 10/30/2019] [Indexed: 01/17/2023]
Abstract
OBJECTIVE Quantifying risk for cardiovascular disease (CVD) events among adolescents is difficult owing to the long latent period between risk factor development and disease outcomes. This study examined the 30-year CVD event risk among adolescents with severe obesity treated with and without metabolic and bariatric surgery (MBS), compared with youths with moderate obesity, overweight, or normal weight. METHODS Cross-sectional and longitudinal comparisons of five frequency-matched (age and diabetes status) groups were performed: normal weight (n = 247), overweight (n = 54), obesity (n = 131), severe obesity without MBS (n = 302), and severe obesity undergoing MBS (n = 215). A 30-year CVD event score developed by the Framingham Heart Study was the primary outcome. Data are mean (SD) with differences between time points for MBS examined using linear mixed models. RESULTS Preoperatively, the likelihood of CVD events was higher among adolescents undergoing MBS (7.9% [6.7%]) compared with adolescents with severe obesity not referred for MBS (5.5% [4.0%]), obesity (3.9% [3.0%]), overweight (3.1% [2.4%]), and normal weight (1.8% [0.8%]; all P < 0.001). At 1 year after MBS, event risk was significantly reduced (7.9% [6.7%] to 4.0% [3.4%], P < 0.0001) and was sustained for up to 5 years after MBS (P < 0.0001, all years vs. baseline). CONCLUSIONS Adolescents with severe obesity are at elevated risk for future CVD events. Following MBS, the predicted risk of CVD events was substantially and sustainably reduced.
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Affiliation(s)
- Justin R. Ryder
- Department of Pediatrics, Center for Pediatric Obesity Medicine, University of Minnesota Medical School, Minneapolis, MN
| | - Peixin Xu
- University of Cincinnati, College of Medicine, Cincinnati, OH
| | - Thomas H. Inge
- University of Colorado, Denver, and Children’s Hospital Colorado, Aurora, CO
| | - Changchun Xie
- University of Cincinnati, College of Medicine, Cincinnati, OH
| | - Todd M. Jenkins
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
| | - Chin Hur
- Columbia University Medical Center, NY
| | | | | | | | - Aaron S. Kelly
- Department of Pediatrics, Center for Pediatric Obesity Medicine, University of Minnesota Medical School, Minneapolis, MN
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Evaluation of machine learning methodology for the prediction of healthcare resource utilization and healthcare costs in patients with critical limb ischemia-is preventive and personalized approach on the horizon? EPMA J 2020; 11:53-64. [PMID: 32140185 DOI: 10.1007/s13167-019-00196-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 12/04/2019] [Indexed: 12/16/2022]
Abstract
Background Critical limb ischemia (CLI) is a severe stage of peripheral arterial disease and has a substantial disease and economic burden not only to patients and families, but also to the society and healthcare systems. We aim to develop a personalized prediction model that utilizes baseline patient characteristics prior to CLI diagnosis to predict subsequent 1-year all-cause hospitalizations and total annual healthcare cost, using a novel Bayesian machine learning platform, Reverse Engineering Forward Simulation™ (REFS™), to support a paradigm shift from reactive healthcare to Predictive Preventive and Personalized Medicine (PPPM)-driven healthcare. Methods Patients ≥ 50 years with CLI plus clinical activity for a 6-month pre-index and a 12-month post-index period or death during the post-index period were included in this retrospective cohort of the linked Optum-Humedica databases. REFS™ built an ensemble of 256 predictive models to identify predictors of all-cause hospitalizations and total annual all-cause healthcare costs during the 12-month post-index interval. Results The mean age of 3189 eligible patients was 71.9 years. The most common CLI-related comorbidities were hypertension (79.5%), dyslipidemia (61.4%), coronary atherosclerosis and other heart disease (42.3%), and type 2 diabetes (39.2%). Post-index CLI-related healthcare utilization included inpatient services (14.6%) and ≥ 1 outpatient visits (32.1%). Median annual all-cause and CLI-related costs per patient were $30,514 and $2196, respectively. REFS™ identified diagnosis of skin and subcutaneous tissue infections, cellulitis and abscess, use of nonselective beta-blockers, other aftercare, and osteoarthritis as high confidence predictors of all-cause hospitalizations. The leading predictors for total all-cause costs included region of residence and comorbid health conditions including other diseases of kidney and ureters, blindness of vision defects, chronic ulcer of skin, and chronic ulcer of leg or foot. Conclusions REFS™ identified baseline predictors of subsequent healthcare resource utilization and costs in CLI patients. Machine learning and model-based, data-driven medicine may complement physicians' evidence-based medical services. These findings also support the PPPM framework that a paradigm shift from post-diagnosis disease care to early management of comorbidities and targeted prevention is warranted to deliver a cost-effective medical services and desirable healthcare economy.
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Tang QH, Chen J, Hu CF, Zhang XL. Comparison Between Endovascular and Open Surgery for the Treatment of Peripheral Artery Diseases: A Meta-Analysis. Ann Vasc Surg 2020; 62:484-495. [DOI: 10.1016/j.avsg.2019.06.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 06/18/2019] [Accepted: 06/30/2019] [Indexed: 11/17/2022]
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Abstract
PURPOSE OF THE REVIEW Peripheral artery disease (PAD) affects close to 200 million people worldwide. Claudication is the most common presenting symptom for patients with PAD. This review summarizes the current diagnostic and treatment options for patients with claudication. Comprehensive history and physical examination in order to differentiate between claudication secondary to vascular disease vs. neurogenic causes is paramount for initial diagnosis. Ankle-brachial index is the most commonly used test for screening and diagnostic purposes. Treatment consists of four different approaches, which are best utilized in combination: non-pharmacological treatment for claudication improvement, pharmacological treatment for claudication improvement, pharmacological treatment for secondary risk reduction, and interventional treatment for claudication improvement. RECENT FINDINGS Cilostazol is the only Food and Drug Administration (FDA)-approved agent for symptomatic treatment of claudication. Supervised exercise programs provide the maximum benefit for claudication improvement, but home-based exercise programs are an alternative. High-intensity statins and an antiplatelet agent should be prescribed to all patients with PAD. Angiotensin-converting-enzyme inhibitors can provide additional risk reduction, especially in patients with diabetes or hypertension. Rivaroxaban of low dosage (2.5 mg twice daily) in combination with aspirin further decreases cardiovascular risk, but this reduction comes at the cost of higher bleeding risk. Peripheral artery disease (PAD) is a form of atherosclerotic disease that affects hundreds of millions of people worldwide-one of its most common manifestations is intermittent claudication (IC), which results from insufficient blood flow to meet the metabolic demands of an affected extremity. This paper reviews the current literature regarding the workup, diagnosis, diagnostic modalities, treatment options, and management of intermittent claudication.
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Affiliation(s)
- Prio Hossain
- UC Davis School of Medicine, Sacramento, CA, USA
| | - Damianos G Kokkinidis
- Department of Medicine, Jacobi Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA.,Division of Cardiology, Rocky Mountain VA Medical Center and University of Colorado, 1600 North Wheeling Street, Aurora, Denver, CO, 80045, USA
| | - Ehrin J Armstrong
- Division of Cardiology, Rocky Mountain VA Medical Center and University of Colorado, 1600 North Wheeling Street, Aurora, Denver, CO, 80045, USA.
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Trends in mortality, readmissions, and complications after endovascular and open infrainguinal revascularization. Surgery 2019; 165:1222-1227. [DOI: 10.1016/j.surg.2019.03.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 03/12/2019] [Accepted: 03/14/2019] [Indexed: 11/17/2022]
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Saratzis A, Paraskevopoulos I, Patel S, Donati T, Biasi L, Diamantopoulos A, Zayed H, Katsanos K. Supervised Exercise Therapy and Revascularization for Intermittent Claudication: Network Meta-Analysis of Randomized Controlled Trials. JACC Cardiovasc Interv 2019; 12:1125-1136. [PMID: 31153838 DOI: 10.1016/j.jcin.2019.02.018] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/05/2019] [Accepted: 02/12/2019] [Indexed: 12/30/2022]
Abstract
OBJECTIVES The aim of this study was to perform a comprehensive meta-analysis comparing all therapeutic modalities for intermittent claudication (IC), including best medical therapy (BMT) alone, percutaneous angioplasty (PTA), supervised exercise therapy (SET), and PTA combined with SET, to establish the optimal first-line treatment for IC. BACKGROUND IC is a common health problem that limits physical activity, results in decreased quality of life (QoL) and is associated with poor cardiovascular outcomes. Previous meta-analyses have attempted to combine data from randomized trials; however, none have combined data from all possible treatment combinations or synthesized QoL outcomes. METHODS Following a systematic review of the published research (conducted in December 2018) that identified 37 published randomized trials, a network meta-analysis was performed combining all possible IC treatment strategies. RESULTS Overall, 2,983 patients with IC were included (mean weighted age 68 years, 54.5% men). Comparisons were performed between BMT (n = 688, 28 arms) versus SET (n = 1,189, 35 arms) versus PTA (n = 511, 12 arms) versus PTA plus SET (n = 395, 8 arms). Mean weighted follow-up was 12 months (95% confidence interval: 9 to 23 months). Compared with BMT alone, PTA plus SET outperformed other treatment strategies, with a maximum walking distance gain of 290 m (95% credible interval: 180 to 390 m; p < 0.001). A variety of QoL assessments using validated tools were reported in 15 trials; PTA plus SET was superior to other treatments (Cohen's D = 1.8; 95% credible interval: 0.21 to 3.4). CONCLUSIONS In addition to BMT, PTA combined with SET seems to be the optimal first-line treatment strategy for IC in terms of maximum walking distance and QoL improvement.
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Affiliation(s)
- Athanasios Saratzis
- Department of Vascular Surgery, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, United Kingdom.
| | | | - Sanjay Patel
- Department of Vascular Surgery, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, United Kingdom
| | - Tommaso Donati
- Department of Vascular Surgery, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, United Kingdom
| | - Lukla Biasi
- Department of Vascular Surgery, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, United Kingdom
| | - Athanasios Diamantopoulos
- Department of Vascular Surgery, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, United Kingdom
| | - Hany Zayed
- Department of Vascular Surgery, Guy's and St. Thomas' Hospital NHS Foundation Trust, London, United Kingdom
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Bolíbar I, Gich I, Anglès A, Romero JM, Escudero JR. Variability of revascularization techniques among Catalan hospitals and impact on leg salvage in patients with peripheral arterial disease. INT ANGIOL 2019; 38:54-61. [DOI: 10.23736/s0392-9590.18.04041-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Endovascular repair of popliteal artery aneurysms: an Italian multicenter study. Radiol Med 2018; 124:79-85. [DOI: 10.1007/s11547-018-0941-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 09/04/2018] [Indexed: 11/25/2022]
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Yi JA, Bronsert M, Glebova NO. Claims Variability in Charges and Payments for Common Open and Endovascular Procedures. Ann Vasc Surg 2018; 54:40-47.e1. [PMID: 30217701 DOI: 10.1016/j.avsg.2018.08.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 07/03/2018] [Accepted: 08/26/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND Cost-effectiveness in healthcare is being increasingly scrutinized. Data regarding claims variability for vascular operations are lacking. Herein, we aim to describe variability in charges and payments for aortoiliac (AI) and infrainguinal (II) revascularizations. METHODS We analyzed 2012-2014 claims data from a statewide claims database for procedures grouped by Current Procedural Terminology codes into II-open (II-O), II-endovascular (II-E), AI-open (AI-O), and AI-endovascular interventions (AI-E). We compared charges and payments in urban (≥50,000 people, UAs) versus rural areas (<50,000 people, RAs). Amounts are reported in $US as median with interquartile range. Cost-to-charge ratios (CCRs) as a measure of reimbursement were calculated as the percentage of the charges covered by the payments. Wilcoxon rank-sum tests were performed to determine significant differences. RESULTS A total of 5,239 persons had complete claims data. There were 7,239 UA and 6,891 RA claims, and 1,057 AI claims (AI-E = 879, AI-O = 178) and 4,182 II claims (II-E = 3,012, II-0 = 1,170). Median charges were $5,357 for AI [$1,846-$27,107] and $2,955 for II [$1,484-$9,338.5] (P < 0.0001). Median plan payment was $454 for AI [$0-$1,380] and $454 for II [$54-$1,060] (P = 0.67). For AI and II, charges were significantly higher for UA than RA (AI: UA $9,875 [$2,489-$34,427], RA $3,732 [$1,450-$20,595], P < 0.0001; II: UA $3,596 [$1,700-$21,664], RA $2,534 [$1,298-$6,169], P < 0.0001). AI-E charges were higher than AI-O (AI-E $7,960 [$1,699-$32,507], AI-O $4,774 [$2,636-$7,147], P < 0.0001), but AI-O payments were higher (AI-E $424 [$0-$1,270], AI-O $869 [$164-$1,435], P = 0.0067). II-E charges were higher (II-E $2,994 [$1,552-$22,164], II-O $2,873 [$1,108-$5,345], P < 0.0001), but II-O payments were higher (II-E $427 [$50-$907], II-O $596 [$73-$1,299], P < 0.0001). CCRs were highest for II operations and UAs. CONCLUSIONS Wide variability in claim charges and payments exists for vascular operations. AI procedures had higher charges than II, without any difference in payments. UA charged more than RA for both AI and II operations, but RA had higher payments and CCRs. Endovascular procedures had higher charges, while open procedures had higher payments. Charge differences may be related to endovascular device costs, and further research is necessary to determine the reasons behind consistent claims variability between UA and RA.
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Affiliation(s)
- Jeniann A Yi
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, University of Colorado Denver, Aurora, CO.
| | - Michael Bronsert
- Adult and Child Center for Outcomes Research and Delivery Science (ACCORDS), University of Colorado Denver, Aurora, CO
| | - Natalia O Glebova
- Division of Vascular Surgery and Endovascular Therapy, Department of Surgery, University of Colorado Denver, Aurora, CO; Department of Vascular Surgery, Mid-Atlantic Permanente Medical Group, Rockville, MD
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Nejim B, Beaulieu RJ, Alshaikh H, Hamouda M, Canner J, Malas MB. A Unique All-Payer Rate-Setting System Controls the Cost but Not the Racial Disparity in Lower Extremity Revascularization Procedures. Ann Vasc Surg 2018; 52:116-125. [PMID: 29783031 DOI: 10.1016/j.avsg.2018.03.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/11/2017] [Accepted: 03/10/2018] [Indexed: 11/26/2022]
Abstract
BACKGROUND Patients with peripheral arterial disease often have high comorbidity burden that may complicate post-interventional course and drive increased health-care expenditures. Racial disparity had been observed in lower extremity revascularization (LER) patterns and outcomes. In 2014, Maryland adopted an all-payer rate-setting system to limit the rising hospitalization costs. This resulted in an aggregate payment system in which hospital compensation takes place as an overall per capita expenditure for hospital services. We sought to examine racial differences and other patient-level factors that might lead to discrepancies in LER hospital costs in the State of Maryland. METHODS We used International Classification of Diseases, Ninth Revision codes to identify patients who underwent infrainguinal open bypass (open) and endovascular repair (endo) in the Maryland Health Services Cost Review Commission database (2009-2015). Multivariable generalized linear model regression analysis was conducted to report cost differences adjusting for patient-specific demographics, comorbidities, and insurance status. Logistic regression analysis was used to assess quality metrics: intensive care unit (ICU) admission, 30-day readmission, protracted length of stay (pLOS) (endo: pLOS >9, open: pLOS > 10 days) and in-hospital mortality. RESULTS Among patients undergoing open, costs were higher for nonwhite patients (African-American [AA]: $6,092 [4,682-7,501], other: $3,324 [437-6,212]; both P ≤ 0.024), diabetics ($2,058 [837-3,279]; P < 0.001), and patients with Medicaid had an increased cost over Medicare patients by $4,325 (1,441-7,209). Critical limb ischemia (CLI) was associated with $5,254 (4,014-6,495) risk-adjusted cost increment. In addition, AA patients demonstrated higher risk-adjusted odds of ICU admission (adjusted odds ratio [aOR] [95% confidence interval {CI}]:1.65 [1.46-1.86]; P < 0.001) and pLOS (aOR [95% CI]: 1.56 [1.37-1.79]; P < 0.001) than their white counterparts. For patients undergoing endo, costs were higher for nonwhite patients (AA: $2,642 [1,574-3,711], other: $4,124 [2,091-6,157]; both P < 0.001). Patients with CLI and heart failure had increased costs after endo. AA patients were more likely to be readmitted or stayed longer after endo (1.16 [1.03-1.29], 1.34 [1.21-1.49]; both P < 0.010, respectively). The overall cost trend was rapidly increasing before all-payer rate policy implementation but it dramatically plateaued after 2014. CONCLUSIONS This study showed that the all-payer rate-setting system has curbed the LER rising costs, but these costs remained disproportionally higher for disadvantaged populations such as AA and Medicaid communities. This underpins the existing racial disparity in LER. AA patients had higher LER costs, most likely driven by extended hospitalization and ICU admission. Efforts could be directed to evaluate the contributing socioeconomic factors, invest in primary prevention of comorbid conditions that had shown to be associated with prohibitive costs, and identify mechanisms to overcome the existing racial disparity in LER within the promising cost-saving payment system at the State of Maryland.
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Affiliation(s)
- Besma Nejim
- The Johns Hopkins Bayview Vascular and Endovascular Research Center, Baltimore, MD
| | - Robert J Beaulieu
- The Johns Hopkins Bayview Vascular and Endovascular Research Center, Baltimore, MD
| | - Husain Alshaikh
- The Johns Hopkins Bayview Vascular and Endovascular Research Center, Baltimore, MD
| | - Mohammed Hamouda
- The Johns Hopkins Bayview Vascular and Endovascular Research Center, Baltimore, MD
| | - Joseph Canner
- The Johns Hopkins Bayview Vascular and Endovascular Research Center, Baltimore, MD
| | - Mahmoud B Malas
- The Johns Hopkins Bayview Vascular and Endovascular Research Center, Baltimore, MD.
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Decision-Making in Critical Limb Ischemia: A Markov Simulation. Ann Vasc Surg 2017; 45:1-9. [PMID: 28739455 DOI: 10.1016/j.avsg.2017.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/08/2017] [Accepted: 07/17/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Critical limb ischemia (CLI) is a feared complication of peripheral vascular disease that often requires surgical management and may require amputation of the affected limb. We developed a decision model to inform clinical management for a 63-year-old woman with CLI and multiple medical comorbidities, including advanced heart failure and diabetes. METHODS We developed a Markov decision model to evaluate 4 strategies: amputation, surgical bypass, endovascular therapy (e.g. stent or revascularization), and medical management. We measured the impact of parameter uncertainty using 1-way, 2-way, and multiway sensitivity analyses. RESULTS In the base case, endovascular therapy yielded similar discounted quality-adjusted life months (26.50 QALMs) compared with surgical bypass (26.34 QALMs). Both endovascular and surgical therapies were superior to amputation (18.83 QALMs) and medical management (11.08 QALMs). This finding was robust to a wide range of periprocedural mortality weights and was most sensitive to long-term mortality associated with endovascular and surgical therapies. Utility weights were not stratified by patient comorbidities; nonetheless, our conclusion was robust to a range of utility weight values. CONCLUSIONS For a patient with CLI, endovascular therapy and surgical bypass provided comparable clinical outcomes. However, this finding was sensitive to long-term mortality rates associated with each procedure. Both endovascular and surgical therapies were superior to amputation or medical management in a range of scenarios.
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