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Schenker C, Wertli MM, Räber L, Haynes AG, Chiolero A, Rodondi N, Panczak R, Aujesky D. Regional variation and temporal trends in transcatheter and surgical aortic valve replacement in Switzerland: A population-based small area analysis. PLoS One 2024; 19:e0296055. [PMID: 38190381 PMCID: PMC10773935 DOI: 10.1371/journal.pone.0296055] [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: 01/29/2023] [Accepted: 12/05/2023] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND Aortic valve stenosis (AS) is the most common valvular heart disease and if severe, is treated with either transcatheter (TAVR) or surgical aortic valve replacement (SAVR). We assessed temporal trends and regional variation of these interventions in Switzerland and examined potential determinants of geographic variation. METHODS We conducted a population-based analysis using patient discharge data from all Swiss public and private acute care hospitals from 2013 to 2018. We generated hospital service areas (HSAs) based on patient flows for TAVR. We calculated age-standardized mean procedure rates and variation indices (extremal quotient [EQ] and systematic component of variation [SCV]). Using multilevel regression, we calculated the influence of calendar year and regional demographics, socioeconomic factors (language, insurance status), burden of disease, and number of cardiologists/cardiovascular surgeons on geographic variation. RESULTS Overall, 8074 TAVR and 11,825 SAVR procedures were performed in 8 HSAs from 2013 to 2018. Whereas the age-/sex-standardized rate of TAVR increased from 12 to 22 procedures/100,000 persons, the SAVR rate decreased from 33 to 24 procedures during this period. After full adjustment, the predicted TAVR and SAVR rates varied from 12 to 22 and 20 to 35 per 100,000 persons across HSAs, respectively. The regional procedure variation was low to moderate over time, with a low overall variation in TAVR (EQ 1.9, SCV 3.9) and SAVR (EQ 1.6, SCV 2.2). In multilevel regression, TAVR rates increased annually by 10% and SAVR rates decreased by 5%. Determinants of higher TAVR rates were older age, male sex, living in a German speaking area, and higher burden of disease. A higher proportion of (semi)private insurance was also associated with higher TAVR and lower SAVR rates. After full adjustment, 10.6% of the variance in TAVR and 18.4% of the variance in SAVR remained unexplained. Most variance in TAVR and SAVR rates was explained by language region and insurance status. CONCLUSION The geographic variation in TAVR and SAVR rates was low to moderate across Swiss regions and largely explained by differences in regional demographics and socioeconomic factors. The use of TAVR increased at the expense of SAVR over time.
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Affiliation(s)
- Carla Schenker
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Maria M. Wertli
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department of Internal Medicine, Cantonal Hospital Baden, Baden, Switzerland
| | - Lorenz Räber
- Department of Cardiology, Inselspital, Bern Bern University Hospital, University of Bern, Bern, Switzerland
| | | | - Arnaud Chiolero
- Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
- School of Population and Global Health, McGill University, Montreal, Canada
- Population Health Laboratory (#PopHealthLab), University of Fribourg, Fribourg, Switzerland
| | - Nicolas Rodondi
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland
| | - Radoslaw Panczak
- Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland
| | - Drahomir Aujesky
- Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Nguyen D, Marwick T, Moodie M, Gao L. Early offering transcatheter aortic valve replacement to patients with moderate aortic stenosis: quantifying costs and benefits - a Markov model-based simulation study. BMJ Open 2023; 13:e073254. [PMID: 37993164 PMCID: PMC10668295 DOI: 10.1136/bmjopen-2023-073254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 11/07/2023] [Indexed: 11/24/2023] Open
Abstract
OBJECTIVE Aortic stenosis (AS) is one of the most common acquired cardiac valvular diseases. The success of transcatheter aortic valve implantation (TAVI) for severe AS has led to increasing interest in its use to earlier disease-moderate AS (MAS). DESIGN Model-based study using a Markov microsimulation technique to evaluate the long-term costs and benefits associated with 'early' TAVI. Key data inputs were sourced from the international literature and costs were obtained from Australian sources. SETTING Australian health care system perspective. PARTICIPANTS 10 000 hypothetical MAS patients with or without left ventricular diastolic dysfunction or impaired left ventricular ejection fraction. INTERVENTION Comparing early TAVI to medical management over a life time horizon for MAS patients aged >65 years. We evaluated the cost-effectiveness of offering early TAVI in five scenarios (10%, 25%, 50%, 75% and 90% take-up rates). PRIMARY AND SECONDARY OUTCOME MEASURES The primary outcome measure is quality-adjusted life years (QALY) gained and the incremental cost-utility ratio (ICUR). Secondary outcomes are life-years gained and the number of heart failure case avoided. RESULTS Offering early TAVI for MAS patients resulted in both higher healthcare costs and greater benefits (an increase of 3.02 QALYs or 3.99 life-years) per person treated. The ICUR was around $A10 867 and $A11 926 per QALY gained for all five scenarios, with the total cost of early TAVI to the healthcare system being anticipated to be up to $A3.66 billion. Sensitivity analyses indicated a 100% probability of being cost-effective with a willingness to pay threshold of $A50 000/QALY. The benefits remained, even with assumptions of high levels of repeat valve replacement after TAVI. CONCLUSION While ongoing randomised controlled trials will define the benefit of TAVI to MAS patients, these results suggest that this intervention is likely to be cost-effective.
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Affiliation(s)
- Dieu Nguyen
- Deakin Health Economics, Institute for Health Transformation, School of Health and Social Development, Deakin University Faculty of Health, Geelong, Victoria, Australia
| | - Tom Marwick
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Marj Moodie
- Deakin Health Economics, Institute for Health Transformation, School of Health and Social Development, Deakin University Faculty of Health, Geelong, Victoria, Australia
| | - Lan Gao
- Deakin Health Economics, Institute for Health Transformation, School of Health and Social Development, Deakin University Faculty of Health, Geelong, Victoria, Australia
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Gonnah AR, Abdelwahab M, Taylor R, Labib A, Masoud O, Debski M, Abdelaziz HK, Roberts DH. Health-related quality of life following TAVI or cardiac surgery in patients at intermediate and low risk: a systematic review and meta-analysis. Clin Med (Lond) 2023; 23:594-605. [PMID: 38065591 PMCID: PMC11046617 DOI: 10.7861/clinmed.2023-0258] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Recent randomised trials have shown that clinical outcomes with transcatheter aortic valve implantation (TAVI) are non-inferior to surgical aortic valve replacement (SAVR) in patients with symptomatic aortic stenosis at intermediate to low risk. Health-related quality of life (HrQoL) outcomes in these patient groups remain uncertain. A systematic search of the literature was conducted that included nine trials and 11,295 patients. Kansas City Cardiomyopathy Questionnaire (KCCQ), a heart-failure-specific measure and EuroQol-5D (EQ-5D) (a generic health status tool) changes were the primary outcomes. New York Heart Association (NYHA) classification was the secondary outcome. Improvement in KCCQ scores was greater with TAVI (mean difference (MD)=13.56, 95% confidence interval (CI) 11.67-15.46, p<0.001) at 1 month, as was the improvement in EQ-5D (MD=0.07, 95% CI 0.05-0.08, p<0.001). There was no difference in KCCQ (MD=1.05, 95% CI -0.11 to 2.21, p=0.08) or EQ-5D (MD=-0.01, 95% CI -0.03 to 0.01), p=0.37) at 12 months. NYHA functional class 3/4 was lower in patients undergoing TAVI at 1 month (MD=0.51, 95% CI 0.34-0.78, p=0.002), but there was no difference at 12 months (MD=1.10; 95% CI 0.87-1.38, p=0.43). Overall, TAVI offers early benefit in HRQoL outcomes compared with SAVR, but they are equivalent at 12 months.
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Affiliation(s)
| | | | - Rebecca Taylor
- Blackpool Teaching Hospitals NHS Foundation Trust, Blackpool, UK
| | - Aser Labib
- Southport and Ormskirk NHS Foundation Trust, Southport, UK
| | - Omar Masoud
- University College London Hospitals NHS Foundation Trust, London, UK
| | - Maciej Debski
- University of East Anglia, Norwich, UK and research fellow, Norfolk and Norwich University Hospital, Norwich, UK
| | | | - David Hesketh Roberts
- Lancashire Cardiac Centre, Blackpool, UK, and honorary senior lecturer, University of Liverpool, Merseyside Liverpool
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Falasa M, Holmes HR, Neal D, Choi CY, Park K, Bavry AA, Freeman KA, Manning EW, Stinson WW, Jeng EI. Outcome and Cost Comparisons Between Surgical and Transcatheter Aortic Valve Replacements. INNOVATIONS-TECHNOLOGY AND TECHNIQUES IN CARDIOTHORACIC AND VASCULAR SURGERY 2022; 17:482-490. [PMID: 36317252 DOI: 10.1177/15569845221125474] [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: 11/06/2022]
Abstract
OBJECTIVE Surgical aortic valve replacement (SAVR) has been the standard of care for severe aortic stenosis. In 2019, annual transcatheter aortic valve replacement (TAVR) implantations surpassed SAVR. We compared in-hospital costs and outcomes between these two procedures. METHODS A single-center retrospective review was performed of patients who underwent isolated SAVR or TAVR from October 2013 to December 2019. Baseline patient characteristics, operating room (OR) time, intensive care unit (ICU) length of stay (LOS), total LOS, cumulative cost, and complication rates were collected. Propensity matching was performed to identify differences in costs and outcomes between comparable groups. RESULTS There were 515 patients who met inclusion criteria. TAVR was performed in 402 patients, while SAVR was performed in 113. Propensity matching resulted in 82 matched pairs. The SAVR cohort more frequently spent >1 day in the ICU, had longer total hospital LOS, longer OR time, and higher hospitalization cost. However, TAVR was associated with higher mean OR cost and higher valve cost. The cumulative index admission costs were not significantly different between groups. TAVR patients had less postoperative atrial fibrillation but more frequent pacemaker placement. One-year mortality was similar between SAVR (2.4%) and TAVR (3.8%), but 3-year (5.8% vs 19.2%) and 5-year (5.8% vs 37.2%) mortality favored SAVR. CONCLUSIONS In propensity-matched groups, TAVR was associated with shorter ICU and hospital LOS and OR times but increased permanent pacemaker rates. In addition, while 1-year survival was similar between groups, SAVR had significantly improved 3-year and 5-year survival.
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Affiliation(s)
- Matheus Falasa
- Division of Cardiovascular Surgery, University of Florida Health, Gainesville, FL, USA
| | - Henry R Holmes
- Division of Cardiovascular Surgery, University of Florida Health, Gainesville, FL, USA
| | - Daniel Neal
- Division of Cardiovascular Surgery, University of Florida Health, Gainesville, FL, USA
| | - Calvin Y Choi
- Division of Cardiology, University of Florida Health, Gainesville, FL, USA.,Division of Cardiology, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Ki Park
- Division of Cardiology, University of Florida Health, Gainesville, FL, USA.,Division of Cardiology, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Anthony A Bavry
- Division of Cardiology, UT Southwestern Medical Center, Dallas, TX, USA
| | - Kirsten A Freeman
- Division of Cardiovascular Surgery, University of Florida Health, Gainesville, FL, USA.,Division of Cardiovascular Surgery, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Eddie W Manning
- Division of Cardiovascular Surgery, University of Florida Health, Gainesville, FL, USA.,Division of Cardiovascular Surgery, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Wade W Stinson
- Division of Cardiovascular Surgery, University of Florida Health, Gainesville, FL, USA.,Division of Cardiovascular Surgery, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Eric I Jeng
- Division of Cardiovascular Surgery, University of Florida Health, Gainesville, FL, USA
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Holmes HR, Falasa M, Neal D, Choi CY, Park K, Bavry AA, Freeman KA, Manning EW, Stinson WW, Jeng EI. Monitored Anesthesia Care Versus General Anesthesia for Transcatheter Aortic Valve Replacement. INNOVATIONS-TECHNOLOGY AND TECHNIQUES IN CARDIOTHORACIC AND VASCULAR SURGERY 2022; 17:401-408. [PMID: 36217748 DOI: 10.1177/15569845221124113] [Citation(s) in RCA: 1] [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
OBJECTIVE Monitored anesthesia care (MAC) has been increasingly used in lieu of general anesthesia (GA) for transcatheter aortic valve replacement (TAVR). We sought to compare outcomes and in-hospital costs between MAC and GA for TAVR at a Veterans Affairs Medical Center. METHODS A single-center retrospective review was performed of 349 patients who underwent transfemoral TAVR (MAC, n = 244 vs GA, n = 105) from January 2014 to December 2019. Baseline patient characteristics, operating room (OR) time, intensive care unit (ICU) length of stay (LOS), and cost, total LOS, hospital cost, total cost, and complication rates were collected. Propensity matching was performed and resulted in 83 matched pairs. RESULTS In the unmatched TAVR cohort, MAC TAVR was associated with reduced OR time (146 vs 198 min, P < 0.001), ICU LOS (1.4 vs 1.8 days, P < 0.001), total hospital LOS (3.4 vs 5.4 days, P < 0.001), and lower index total cost ($81,300 vs $85,400, P = 0.010). After propensity matching, MAC TAVR patients had reduced OR time (146 vs 196 min, P < 0.05), ICU LOS (1.2 vs 1.7 days, P = 0.006), total LOS (3.5 vs 5.1 days, P = 0.001), and 180-day mortality (2.4% vs 12%, P < 0.03). There was no difference in total hospitalization cost or total cost. CONCLUSIONS In propensity-matched groups, TAVR utilizing MAC is associated with improved OR time efficiency, decreased LOS, and a reduction in 180-day mortality but no significant difference in cost.
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Affiliation(s)
- Henry R Holmes
- Division of Cardiovascular Surgery, Department of Surgery, University of Florida Health, Gainesville, FL, USA
| | - Matheus Falasa
- Division of Cardiovascular Surgery, Department of Surgery, University of Florida Health, Gainesville, FL, USA
| | - Daniel Neal
- Department of Surgery, University of Florida Health, Gainesville, FL, USA
| | - Calvin Y Choi
- Division of Cardiology, Department of Medicine, University of Florida Health, Gainesville, FL, USA.,Division of Cardiology, Department of Medicine, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Ki Park
- Division of Cardiology, Department of Medicine, University of Florida Health, Gainesville, FL, USA.,Division of Cardiology, Department of Medicine, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Anthony A Bavry
- Division of Cardiology, Department of Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - Kirsten A Freeman
- Division of Cardiovascular Surgery, Department of Surgery, University of Florida Health, Gainesville, FL, USA.,Division of Thoracic and Cardiovascular Surgery, Department of Surgery, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Eddie W Manning
- Division of Cardiovascular Surgery, Department of Surgery, University of Florida Health, Gainesville, FL, USA.,Division of Thoracic and Cardiovascular Surgery, Department of Surgery, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Wade W Stinson
- Division of Cardiovascular Surgery, Department of Surgery, University of Florida Health, Gainesville, FL, USA.,Division of Thoracic and Cardiovascular Surgery, Department of Surgery, North Florida/South Georgia Veterans Health System, Gainesville, FL, USA
| | - Eric I Jeng
- Division of Cardiovascular Surgery, Department of Surgery, University of Florida Health, Gainesville, FL, USA
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Bhushan S, Huang X, Li Y, He S, Mao L, Hong W, Xiao Z. Paravalvular Leak After Transcatheter Aortic Valve Implantation Its Incidence, Diagnosis, Clinical Implications, Prevention, Management, and Future Perspectives: A Review Article. Curr Probl Cardiol 2022; 47:100957. [DOI: https:/doi.org/10.1016/j.cpcardiol.2021.100957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
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7
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Paravalvular Leak After Transcatheter Aortic Valve Implantation Its Incidence, Diagnosis, Clinical Implications, Prevention, Management, and Future Perspectives: A Review Article. Curr Probl Cardiol 2021; 47:100957. [PMID: 34364915 DOI: 10.1016/j.cpcardiol.2021.100957] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 07/30/2021] [Indexed: 02/05/2023]
Abstract
Paravalvular leak (PVL) is very common after TAVI and has been reported to have a negative impact on both short- and long-term survival. The current study identified incidence, diagnosis, clinical implications, and prevention, management and future perspectives for post-TAVI paravalvular leak. A systematic literature search was conducted using PubMed and EMBASE, using the MeSH terms and key words "paravalvular leak," "diagnostic criteria," "implication," "influencing factors," and "prevention strategies." Studies were retained for review after meeting strict inclusion criteria that included only prospective studies evaluating Paravalvular leak in patients who had TAVI. Thirty articles were selected for inclusion, incidence of PVL across the studies ranged from 7% to 40%. Many factors have been associated with incidence and increased risk of PVL, including AVC volume, larger annulus dimensions, pre-TAVI transvalvular peak velocity, under sizing of the prosthesis, surgical, and other factors. PVL after TAVI is common and can be predicted by aortic root calcification volume, larger annulus dimensions, and pre-TAVI transvalvular peak velocity, with calcification volume being an independent predictor for PVL. The strength and nature of the association of various degrees of post-TAVI PVL and mortality are still to be further evaluated.
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Bhushan S, Huang X, Li Y, He S, Mao L, Hong W, Xiao Z. Paravalvular Leak After Transcatheter Aortic Valve Implantation Its Incidence, Diagnosis, Clinical Implications, Prevention, Management, and Future Perspectives: A Review Article. Curr Probl Cardiol 2021. [DOI: https://doi.org/10.1016/j.cpcardiol.2021.100957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bui HT, Khair N, Yeats B, Gooden S, James SP, Dasi LP. Transcatheter Heart Valves: A Biomaterials Perspective. Adv Healthc Mater 2021; 10:e2100115. [PMID: 34038627 DOI: 10.1002/adhm.202100115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/23/2021] [Indexed: 11/11/2022]
Abstract
Heart valve disease is prevalent throughout the world, and the number of heart valve replacements is expected to increase rapidly in the coming years. Transcatheter heart valve replacement (THVR) provides a safe and minimally invasive means for heart valve replacement in high-risk patients. The latest clinical data demonstrates that THVR is a practical solution for low-risk patients. Despite these promising results, there is no long-term (>20 years) durability data on transcatheter heart valves (THVs), raising concerns about material degeneration and long-term performance. This review presents a detailed account of the materials development for THVRs. It provides a brief overview of THVR, the native valve properties, the criteria for an ideal THV, and how these devices are tested. A comprehensive review of materials and their applications in THVR, including how these materials are fabricated, prepared, and assembled into THVs is presented, followed by a discussion of current and future THVR biomaterial trends. The field of THVR is proliferating, and this review serves as a guide for understanding the development of THVs from a materials science and engineering perspective.
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Affiliation(s)
- Hieu T. Bui
- Department of Biomedical Engineering Georgia Institute of Technology 387 Technology Cir NW Atlanta GA 30313 USA
| | - Nipa Khair
- School of Advanced Materials Discovery Colorado State University 700 Meridian Ave Fort Collins CO 80523 USA
| | - Breandan Yeats
- Department of Biomedical Engineering Georgia Institute of Technology 387 Technology Cir NW Atlanta GA 30313 USA
| | - Shelley Gooden
- Department of Biomedical Engineering Georgia Institute of Technology 387 Technology Cir NW Atlanta GA 30313 USA
| | - Susan P. James
- School of Advanced Materials Discovery Colorado State University 700 Meridian Ave Fort Collins CO 80523 USA
| | - Lakshmi Prasad Dasi
- Department of Biomedical Engineering Georgia Institute of Technology 387 Technology Cir NW Atlanta GA 30313 USA
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Coccia M. Evolution of technology in replacement of heart valves: Transcatheter aortic valves, a revolution for management of valvular heart diseases. HEALTH POLICY AND TECHNOLOGY 2021. [DOI: 10.1016/j.hlpt.2021.100512] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Navaratnarajah M, Luthra S, Ohri S. Transcatheter aortic valve implantation in low-risk patients: A case of rational over exuberance. The time is not now. Asian Cardiovasc Thorac Ann 2021; 29:836-847. [PMID: 34034507 DOI: 10.1177/02184923211018589] [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: 11/17/2022]
Abstract
BACKGROUND Review of evidence and concerns, relating to extension of transcatheter aortic valve implantation usage to low-risk patients. METHODS Comprehensive literature review was conducted identifying articles relating to transcatheter aortic valve implantation. RESULTS Transcatheter aortic valve implantation is effective in patients with aortic stenosis. Currently, long-term durability and cost-effectiveness are unproven, anticoagulation requirement undefined, permanent pacemaker implantation and paravalvular leak rates higher than following surgical aortic valve replacement. CONCLUSIONS Current evidence supporting transcatheter aortic valve implantation usage in low-risk patients is insufficient. Extending use now, to this large young patient population is premature, and should be delayed.
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Affiliation(s)
| | - Suvitesh Luthra
- Department of Cardiac Surgery, Southampton University Hospital, Southampton, UK
| | - Sunil Ohri
- Department of Cardiac Surgery, Southampton University Hospital, Southampton, UK
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