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    Antihypertensive therapies in moderate or severe aortic stenosis: a systematic review and meta-analysis

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    Author
    Sen, J; Chung, E; Neil, C; Marwick, T
    Date
    2020-01-01
    Source Title
    BMJ Open
    Publisher
    BMJ PUBLISHING GROUP
    University of Melbourne Author/s
    Marwick, Thomas; Neil, Christopher; Sen, Jonathan
    Affiliation
    Medicine and Radiology
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Sen, J., Chung, E., Neil, C. & Marwick, T. (2020). Antihypertensive therapies in moderate or severe aortic stenosis: a systematic review and meta-analysis. BMJ OPEN, 10 (10), https://doi.org/10.1136/bmjopen-2020-036960.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/252223
    DOI
    10.1136/bmjopen-2020-036960
    Abstract
    BACKGROUND: Hypertension confers a poor prognosis in moderate or severe aortic stenosis (AS), however, antihypertensive therapy (AHT) is often not prescribed due to the perceived deleterious effects of vasodilation and negative inotropes. OBJECTIVE: To assess the efficacy and safety outcomes of AHT in adults with moderate or severe AS. DESIGN: Systematic review and meta-analysis. DATA SOURCES: The Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE and grey literature were searched without language restrictions up to 9 September 2019. STUDY ELIGIBILITY CRITERIA, APPRAISAL AND SYNTHESIS METHODS: Two independent reviewers performed screening, data extraction and risk of bias assessments from a systematic search of observational studies and randomised controlled trials comparing AHT with a placebo or no AHT in adults with moderate or severe AS for any parameter of efficacy and safety outcomes. Conflicts were resolved by the third reviewer. Meta-analysis with pooled effect sizes using random-effects model, were estimated in R. MAIN OUTCOME MEASURES: Mortality, Left Ventricular (LV) Mass Index, systolic blood pressure, diastolic blood pressure and LV ejection fraction RESULTS: From 3025 publications, 31 studies (26 500 patients) were included in the qualitative synthesis and 24 studies in the meta-analysis. AHT was not associated with mortality when all studies were pooled, but heterogeneity was substantial across studies. The effect size of AHT differed according to drug class. Renin-angiotensin-aldosterone system inhibitors (RAASi) were associated with reduced risk of mortality (Pooled HR 0.58, 95% CI 0.43 to 0.80, p=0.006), The differences in changes of haemodynamic or echocardiographic parameters from baseline with and without AHT did not reach statistical significance. CONCLUSION: AHT appears safe, is well tolerated. RAASi were associated with clinical benefit in patients with moderate or severe AS.

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