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Variation in GP decisions on antihypertensive treatment in oldest-old and frail individuals across 29 countries.
University of Bern, Switzerland.
University of Bern, Switzerland.
University of Bern, Switzerland;Bern University Hospital, Switzerland.
Hospital Israelita Albert Einstein, Brazil.
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2017 (English)In: BMC Geriatrics, ISSN 1471-2318, E-ISSN 1471-2318, Vol. 17, no 1, p. 1-7, article id 93Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: In oldest-old patients (>80), few trials showed efficacy of treating hypertension and they included mostly the healthiest elderly. The resulting lack of knowledge has led to inconsistent guidelines, mainly based on systolic blood pressure (SBP), cardiovascular disease (CVD) but not on frailty despite the high prevalence in oldest-old. This may lead to variation how General Practitioners (GPs) treat hypertension. Our aim was to investigate treatment variation of GPs in oldest-olds across countries and to identify the role of frailty in that decision.

METHODS: Using a survey, we compared treatment decisions in cases of oldest-old varying in SBP, CVD, and frailty. GPs were asked if they would start antihypertensive treatment in each case. In 2016, we invited GPs in Europe, Brazil, Israel, and New Zealand. We compared the percentage of cases that would be treated per countries. A logistic mixed-effects model was used to derive odds ratio (OR) for frailty with 95% confidence intervals (CI), adjusted for SBP, CVD, and GP characteristics (sex, location and prevalence of oldest-old per GP office, and years of experience). The mixed-effects model was used to account for the multiple assessments per GP.

RESULTS: The 29 countries yielded 2543 participating GPs: 52% were female, 51% located in a city, 71% reported a high prevalence of oldest-old in their offices, 38% and had >20 years of experience. Across countries, considerable variation was found in the decision to start antihypertensive treatment in the oldest-old ranging from 34 to 88%. In 24/29 (83%) countries, frailty was associated with GPs' decision not to start treatment even after adjustment for SBP, CVD, and GP characteristics (OR 0.53, 95%CI 0.48-0.59; ORs per country 0.11-1.78).

CONCLUSIONS: Across countries, we found considerable variation in starting antihypertensive medication in oldest-old. The frail oldest-old had an odds ratio of 0.53 of receiving antihypertensive treatment. Future hypertension trials should also include frail patients to acquire evidence on the efficacy of antihypertensive treatment in oldest-old patients with frailty, with the aim to get evidence-based data for clinical decision-making.

Place, publisher, year, edition, pages
BioMed Central, 2017. Vol. 17, no 1, p. 1-7, article id 93
Keywords [en]
Clinical variation, Elderly, Frailty, General practitioners, Hypertension, Oldest-old
National Category
Cardiac and Cardiovascular Systems
Research subject
Natural Science, Medicine
Identifiers
URN: urn:nbn:se:lnu:diva-81320DOI: 10.1186/s12877-017-0486-4PubMedID: 28427345OAI: oai:DiVA.org:lnu-81320DiVA, id: diva2:1298971
Available from: 2019-03-25 Created: 2019-03-25 Last updated: 2019-11-29Bibliographically approved

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