title: Association of age and baseline systolic blood pressure with outcomes in patients hospitalized for acute heart failure syndromes.
abstract: BACKGROUND
  Baseline systolic blood pressure (SBP) is one of the most important prognostic indicators for patients with acute heart failure syndromes (AHFS). However, the association among age, baseline SBP, and outcomes of AHFS is unclear. This study was performed to evaluate the relation between baseline SBP and outcomes to increasing age in patients hospitalized for AHFS.
  
  
  METHODS
  Of the 4842 patients entered into the Acute Decompensated Heart Failure Syndromes (ATTEND) registry, 4828 patients with in-hospital and postdischarge follow-up data were included. The patients were divided into quartiles of age (<65, 65 to 75, 76 to 82, and ≥83 years), and each age group was divided into quartiles of baseline SBP. Then the 1-year all-cause mortality was compared among the baseline SBP quartiles in the each age quartile.
  
  
  RESULTS
  After adjustment for multiple comorbidities, patients aged <65 years, 65 to 75 years, and 76 to 82 years showed no significant increase in the relative risk of all-cause mortality as the baseline SBP declined until the lowest SBP quartile (SBP<112 mmHg, <120 mmHg, and <120 mmHg, respectively). In contrast, among patients aged ≥83 years, the lower three SBP quartiles (SBP<122 mmHg, 122 to <142 mmHg, and 142 to <165 mmHg) were associated with a significantly higher risk of all-cause mortality than the highest SBP quartile.
  
  
  CONCLUSIONS
  In patients hospitalized for AHFS, the relation between baseline SBP and all-cause mortality is markedly associated with increasing age, which means that baseline SBP is more important for very elderly patients with AHFS.
authors.affiliation: Division of Cardiology, Sekikawa Hospital, Tokyo, Japan. Electronic address: kkajimoto@gmail.com.
authors.forename: Katsuya
authors.initials: K
authors.lastname: Kajimoto
authors.affiliation: Internal Medicine, Cardiology, and Intensive Care Unit, Nippon Medical School Musashi-Kosugi Hospital, Kanagawa, Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Sato
authors.affiliation: Department of Internal Medicine, Nippon Medical School, Tokyo, Japan.
authors.forename: Teruo
authors.initials: T
authors.lastname: Takano
mesh_terms: D000208:Acute Disease; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure / Q000502:physiology*; D002423:Cause of Death; D005260:Female; D005500:Follow-Up Studies; D006333:Heart Failure / Q000401:mortality / Q000503:physiopathology*; D006801:Humans; D007297:Inpatients; D007564:Japan / Q000453:epidemiology; D008297:Male; D011446:Prospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D015996:Survival Rate / Q000639:trends; D013577:Syndrome; D013599:Systole
keywords: Acute heart failure syndromes; Age; Morbidity; Mortality; Systolic blood pressure