{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,5]],"date-time":"2025-10-05T19:41:28Z","timestamp":1759693288358,"version":"build-2065373602"},"reference-count":26,"publisher":"BMJ","issue":"9","license":[{"start":{"date-parts":[[2025,9,4]],"date-time":"2025-09-04T00:00:00Z","timestamp":1756944000000},"content-version":"unspecified","delay-in-days":3,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences","award":["2023-I2M-C&T-B-068"],"award-info":[{"award-number":["2023-I2M-C&T-B-068"]}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2025,8,17]]},"published-print":{"date-parts":[[2025,9]]},"abstract":"<jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>The optimal blood pressure (BP) target for patients with heart failure (HF) remains a topic of debate. The relationship between out-of-office BP measurements and the prognosis of HF patients is still unclear. However, there is a lack of large-scale studies investigating out-of-office BP levels in Chinese populations with HF. This study aims to outline the rationale and design of the Out-of-Office Blood Pressure Measurements in Patients with Heart Failure registry (OOBPM-HF) study in China.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>The OOBPM-HF study is a prospective, multicentre, observational cohort study involving participants recruited from 26 hospitals in China. Patents with relatively stable HF symptoms will undergo a screening process to determine their eligibility for study participation. Data from baseline clinical, laboratory and imaging examinations will be collected. BP parameters, including office BP, ambulatory BP and home BP, will be measured and documented. The primary endpoint of the study is the composite endpoint of death from cardiovascular causes and HF hospitalisation. Participants will be followed up for a duration of 18 months.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>The study will establish a comprehensive understanding of the associations between out-of-office BP measurements and HF prognosis within the Chinese population. The findings of this study will provide valuable insights into the optimal BP range for patients with HF and will contribute to the management of BP in this patient group.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Trial registration number<\/jats:title>\n                  <jats:p>ChiCTR2400090786; Result.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1136\/bmjopen-2025-100482","type":"journal-article","created":{"date-parts":[[2025,9,4]],"date-time":"2025-09-04T15:18:15Z","timestamp":1756999095000},"page":"e100482","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Out-of-Office Blood Pressure Measurements in Patients with Heart Failure Registry Study (OOBPM-HF study) in China: study protocol, rationale and 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