Age-dependent associations between sleep-disordered breathing and hypertension: Importance of discriminating between systolic/diastolic hypertension and isolated systolic hypertension in the sleep heart health study

Donald C. Haas, Gregory L. Foster, F. Javier Nieto, Susan Redline, Helaine E. Resnick, John A Robbins, Terry Young, Thomas G. Pickering

Research output: Contribution to journalArticle

250 Scopus citations

Abstract

Background - Sleep-disordered breathing (SDB) is associated with hypertension in the middle-aged. The association is less clear in older persons. Most middle-aged hypertensives have systolic/diastolic hypertension, whereas isolated systolic hypertension (ISH) is common among persons over 60 years. Mechanistically, only systolic/diastolic hypertension is expected to be associated with SDB, but few studies of SDB and hypertension distinguish systolic/diastolic hypertension from ISH. Prior investigations may have underestimated an association between SDB and systolic/diastolic hypertension in the elderly by categorizing individuals with ISH as simply hypertensive. Methods and Results - We conducted cross-sectional analyses of 6120 participants in the Sleep Heart Health Study, stratified by age: 40 to 59 (n=2477) and ≥60 years. Outcome measures included apnea-hypopnea index (AHI; average number of apneas plus hypopneas per hour of sleep), systolic/diastolic hypertension (≥140 and ≥90 mm Hg), and ISH (≥140 and <90 mm Hg). With adjustment for covariates, ISH was not associated with SDB in either age category. In those aged<60 years, AHI was significantly associated with higher odds of systolic/diastolic hypertension (AHI 15 to 29.9, OR=2.38 [95% CI 1.30 to 4.38]; AHI ≥30, OR=2.24 [95% CI 1.10 to 4.54]). Among those aged ≥60 years, no adjusted association between AHI and systolic/diastolic hypertension was found. Conclusions - SDB is associated with systolic/diastolic hypertension in those aged <60 years. No association was found between SDB and systolic/diastolic hypertension in those aged ≥60 years or between SDB and ISH in either age category. These findings have implications for SDB screening and treatment. Distinguishing between hypertensive subtypes reveals a stronger association between SDB and hypertension for those aged <60 years than previously reported.

Original languageEnglish (US)
Pages (from-to)614-621
Number of pages8
JournalCirculation
Volume111
Issue number5
DOIs
StatePublished - Feb 8 2005

Keywords

  • Epidemiology
  • Hypertension
  • Risk factors
  • Sleep apnea syndromes

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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