{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T12:30:17Z","timestamp":1770813017991,"version":"3.50.1"},"reference-count":46,"publisher":"Oxford University Press (OUP)","license":[{"start":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T00:00:00Z","timestamp":1770249600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"DOI":"10.13039\/501100014091","name":"AstraZeneca","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100014091","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background and Aims<\/jats:title>\n                    <jats:p>Heart failure (HF) is a major global health burden, yet its true prevalence remains uncertain due to heterogeneous study designs and evolving diagnostic criteria. The Portuguese Heart Failure Prevalence Observational Study (PORTHOS) aimed to estimate the prevalence and phenotypic distribution of HF in community-dwelling adults aged \u226550 years in mainland Portugal.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>PORTHOS was a cross-sectional, population-based study with a two-stage design. Stage 1 randomly selected community-dwelling individuals aged \u226550 years via structured interviews and point-of-care N-terminal pro-B-type natriuretic peptide (NT-proBNP) testing. Individuals with NT-proBNP \u2265125 pg\/mL and\/or a self-reported HF diagnosis, plus a random 5% of screen-negatives, proceeded to stage 2. This confirmatory stage included clinical assessment, electrocardiogram, and echocardiography. HF diagnosis required the presence of symptoms, NT-proBNP \u2265125 pg\/mL, and echocardiographic criteria. HF was defined as per the 2021 ESC and HFA-PEFF guidelines.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Of 6189 participants, 2249 screened positive and 1136 were diagnosed with HF. The estimated HF prevalence was 16.54%, increasing with age (from 4.01% in 50\u201359 years old to 30.68% in those \u226570) and higher in females than males (21.00% vs 10.47%). Notably, 93.4% had HF with preserved ejection fraction (HFpEF), and 90% were previously undiagnosed. HFpEF was independently associated with older age, female sex, type 2 diabetes, atrial fibrillation, and dyslipidaemia.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>HF affects approximately one in six Portuguese adults aged \u226550 years, with HFpEF accounting for over 90% of cases, most previously undiagnosed. These findings support NT-proBNP-based screening combined with echocardiographic evaluation to improve early HF detection in ageing populations.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/eurheartj\/ehag030","type":"journal-article","created":{"date-parts":[[2026,1,13]],"date-time":"2026-01-13T12:29:59Z","timestamp":1768307399000},"source":"Crossref","is-referenced-by-count":0,"title":["Heart failure in the Portuguese population aged \u226550 years: prevalence and phenotypes in the PORTHOS study"],"prefix":"10.1093","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7411-7039","authenticated-orcid":false,"given":"Rui","family":"Baptista","sequence":"first","affiliation":[{"name":"Cardiology Department, Unidade Local de Sa\u00fade de Entre o Douro e Vouga , Santa Maria da Feira ,","place":["Portugal"]},{"name":"Faculty of Medicine, University of Coimbra , Coimbra ,","place":["Portugal"]},{"name":"Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra , Coimbra ,","place":["Portugal"]},{"name":"Clinical Academic Center of Coimbra (CACC) , Coimbra ,","place":["Portugal"]},{"name":"Medical Sciences Department, University of Aveiro , Aveiro ,","place":["Portugal"]}]},{"given":"Ana Maria","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, Faculdade de Ci\u00eancias M\u00e9dicas, Universidade Nova de Lisboa , Lisbon ,","place":["Portugal"]}]},{"given":"Filipa","family":"Bernardo","sequence":"additional","affiliation":[{"name":"Medical Department, AstraZeneca , Lisbon ,","place":["Portugal"]}]},{"given":"L\u00edgia Lopes","family":"Mendes","sequence":"additional","affiliation":[{"name":"Cardiology Department, Hospital da Luz Set\u00fabal , Set\u00fabal ,","place":["Portugal"]}]},{"given":"F\u00e1tima","family":"Franco","sequence":"additional","affiliation":[{"name":"Unidade de Tratamento de Insufici\u00eancia Card\u00edaca Avan\u00e7ada (UTICA), Cardiology Department, Unidade Local de Sa\u00fade de Coimbra , Coimbra ,","place":["Portugal"]}]},{"given":"Joana","family":"Pimenta","sequence":"additional","affiliation":[{"name":"Internal Medicine Department, Unidade Local de Sa\u00fade de Gaia\/Espinho , Vila Nova de Gaia ,","place":["Portugal"]},{"name":"Medical Department, UnIC@RISE, Faculdade de Medicina da Universidade de Porto , Porto ,","place":["Portugal"]}]},{"given":"Sara","family":"Gon\u00e7alves","sequence":"additional","affiliation":[{"name":"Unidade Integrada de Insufici\u00eancia Card\u00edaca, Unidade Local de Sa\u00fade da Arr\u00e1bida , Set\u00fabal ,","place":["Portugal"]}]},{"given":"Ana Rita","family":"Henriques","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, Faculdade de Ci\u00eancias M\u00e9dicas, Universidade Nova de Lisboa , Lisbon ,","place":["Portugal"]}]},{"given":"Jorge M","family":"Mendes","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, Faculdade de Ci\u00eancias M\u00e9dicas, Universidade Nova de Lisboa , Lisbon ,","place":["Portugal"]}]},{"given":"Ana Teresa","family":"Tim\u00f3teo","sequence":"additional","affiliation":[{"name":"Comprehensive Health Research Centre (CHRC), NOVA Medical School, Faculdade de Ci\u00eancias M\u00e9dicas, Universidade Nova de Lisboa , Lisbon ,","place":["Portugal"]},{"name":"Cardiology Department, Santa Marta Hospital, Unidade Local de Sa\u00fade de S\u00e3o Jos\u00e9 , Lisbon ,","place":["Portugal"]}]},{"given":"Aurora","family":"Andrade","sequence":"additional","affiliation":[{"name":"Cardiology Department, Unidade Local de Sa\u00fade T\u00e2mega e Sousa , Penafiel ,","place":["Portugal"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6158-7368","authenticated-orcid":false,"given":"Brenda","family":"Moura","sequence":"additional","affiliation":[{"name":"Armed Forces Hospital , Porto ,","place":["Portugal"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3019-5956","authenticated-orcid":false,"given":"C\u00e2ndida","family":"Fonseca","sequence":"additional","affiliation":[{"name":"Heart Failure Clinic, Medical Department, Unidade Local de Sa\u00fade de Lisboa Ocidental , Lisbon ,","place":["Portugal"]},{"name":"NOVA Medical School, Universidade Nova de Lisboa , Lisbon ,","place":["Portugal"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5970-6353","authenticated-orcid":false,"given":"Carlos","family":"Aguiar","sequence":"additional","affiliation":[{"name":"Cardiology Department, Hospital Santa Cruz, Unidade Local de Sa\u00fade de Lisboa Ocidental , Lisbon ,","place":["Portugal"]}]},{"given":"Dulce","family":"Brito","sequence":"additional","affiliation":[{"name":"Cardiology Department, Unidade Local de Sa\u00fade Santa Maria , Lisbon ,","place":["Portugal"]},{"name":"CCUL@RISE, Faculty of Medicine, Universidade de Lisboa , Lisbon ,","place":["Portugal"]}]},{"given":"Jorge","family":"Ferreira","sequence":"additional","affiliation":[{"name":"Cardiology Department, Hospital Santa Cruz, Unidade Local de Sa\u00fade de Lisboa Ocidental , Lisbon ,","place":["Portugal"]}]},{"given":"Marisa","family":"Peres","sequence":"additional","affiliation":[{"name":"Cardiology Department, Santar\u00e9m Hospital, Unidade Local de Sa\u00fade da Lez\u00edria , Santar\u00e9m ,","place":["Portugal"]}]},{"given":"Paulo","family":"Santos","sequence":"additional","affiliation":[{"name":"Community Medicine Department, Information and Health Decision Sciences (MEDCIS), Faculty of Medicine, University of Porto , Porto 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