George, S, Kwok, CS ORCID: https://orcid.org/0000-0001-7047-1586, Martin, GP, Babu, A, Shufflebotham, A, Nolan, J, Ratib, K, Bagur, R, Gunning, M and Mamas, M ORCID: https://orcid.org/0000-0001-9241-8890 (2018) The Influence of the Charlson Comorbidity Index on Procedural Characteristics, VARC-2 Endpoints and 30-Day Mortality Among Patients Who Undergo Transcatheter Aortic Valve Implantation. Heart, Lung and Circulation.

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Abstract

BACKGROUND: Aortic stenosis (AS) is a common valvular abnormality and transcatheter aortic valve implantation (TAVI) is being increasingly used to treat patients considered too high risk for conventional surgery. We aimed to assess the prevalence of comorbid conditions in patients undergoing TAVI using the Charlson Comorbidity Index (CCI) and to assess their impact on clinical and procedural outcomes. METHODS: We analysed 158 patients who underwent a TAVI at our institution between June 2009 and September 2015 to define their co-morbid burden as measured with CCI, and study its impact on procedural characteristics and mortality at 30 days. RESULTS: One-hundred-fifty-eight (158) patients with a mean age of 82±8years and a mean CCI score of 2.67 underwent a TAVI. Only 12/158 patients had a CCI of 0. The commonest cardiovascular comorbidities were previous myocardial infarction (24%), congestive heart failure (15%) and diabetes mellitus (23%) whilst the commonest non-cardiovascular comorbidities were renal disease (46%) and chronic obstructive pulmonary disease (COPD) (29%). After multivariable adjustment, CCI was not independently associated with adverse clinical outcomes. The addition of CCI to scoring systems such as Logistic EuroScore (LES) and Society of Thoracic Surgeons (STS) risk models improved the area under the curve from 0.75 (95%CI: 0.44-1.00) and 0.83 (95%CI: 0.64-1.00) to 0.78 (95%CI: 0.53-1.00) and 0.89 (95%CI: 0.78-1.00) respectively. CONCLUSIONS: The burden of comorbid conditions in patients undergoing TAVI is significant. The CCI score was not independently associated with a higher risk of death but can be useful in addition to LES and STS risk models in informing decision making on the selection of patients for TAVI.

Item Type: Article
Additional Information: This is the accepted author manuscript (AAM). The final published version (version of record) is available online via Elsevier at https://www.sciencedirect.com/science/article/pii/S1443950618319899?via%3Dihub - please refer to any applicable terms of use of the publisher.
Uncontrolled Keywords: Aortic valve disease; Transcatheter valve implantation; Health care outcomes
Subjects: R Medicine > R Medicine (General)
R Medicine > RC Internal medicine > RC666 Diseases of the circulatory (Cardiovascular) system
Divisions: Faculty of Medicine and Health Sciences > Primary Care Health Sciences
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Depositing User: Symplectic
Date Deposited: 15 Jan 2019 09:17
Last Modified: 15 Jan 2019 09:17
URI: http://eprints.keele.ac.uk/id/eprint/5683

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