Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2010-3-18
pubmed:abstractText
In previous studies, of which several were underpowered, the relation between cardiovascular outcome and blood pressure (BP) variability was inconsistent. We followed health outcomes in 8938 subjects (mean age: 53.0 years; 46.8% women) randomly recruited from 11 populations. At baseline, we assessed BP variability from the SD and average real variability in 24-hour ambulatory BP recordings. We computed standardized hazard ratios (HRs) while stratifying by cohort and adjusting for 24-hour BP and other risk factors. Over 11.3 years (median), 1242 deaths (487 cardiovascular) occurred, and 1049, 577, 421, and 457 participants experienced a fatal or nonfatal cardiovascular, cardiac, or coronary event or a stroke. Higher diastolic average real variability in 24-hour ambulatory BP recordings predicted (P<or=0.03) total (HR: 1.14) and cardiovascular (HR: 1.21) mortality and all types of fatal combined with nonfatal end points (HR: >or=1.07) with the exception of cardiac and coronary events (HR: <or=1.02; P>or=0.58). Higher systolic average real variability in 24-hour ambulatory BP recordings predicted (P<0.05) total (HR: 1.11) and cardiovascular (HR: 1.16) mortality and all fatal combined with nonfatal end points (HR: >or=1.07), with the exception of cardiac and coronary events (HR: <or=1.03; P>or=0.54). SD predicted only total and cardiovascular mortality. While accounting for the 24-hour BP level, average real variability in 24-hour ambulatory BP recordings added <1% to the prediction of a cardiovascular event. Sensitivity analyses considering ethnicity, sex, age, previous cardiovascular disease, antihypertensive treatment, number of BP readings per recording, or the night:day BP ratio were confirmatory. In conclusion, in a large population cohort, which provided sufficient statistical power, BP variability assessed from 24-hour ambulatory recordings did not contribute much to risk stratification over and beyond 24-hour BP.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
1524-4563
pubmed:author
pubmed-author:Björklund-BodegårdKristinaK, pubmed-author:BoggiaJoséJ, pubmed-author:CasigliaEdoardoE, pubmed-author:DolanEamonE, pubmed-author:FanP FPF, pubmed-author:HansenTine WTW, pubmed-author:IbsenHansH, pubmed-author:ImaiYutakaY, pubmed-author:International Database on Ambulatory Blood Pressure in Relation to..., pubmed-author:JeppesenJørgenJ, pubmed-author:Kawecka-JaszczKalinaK, pubmed-author:KikuyaMasahiroM, pubmed-author:KuznetsovaTatianaT, pubmed-author:LiYanY, pubmed-author:MalyutinaSofiaS, pubmed-author:NikitinYuriY, pubmed-author:O'BrienEoinE, pubmed-author:OhkuboTakayoshiT, pubmed-author:RichartTomT, pubmed-author:SandoyaEdgardoE, pubmed-author:StaessenJan AJA, pubmed-author:Stolarz-SkrzypekKatarzynaK, pubmed-author:ThijsLutgardeL, pubmed-author:TikhonoffValérieV, pubmed-author:Torp-PedersenChristianC, pubmed-author:WangJiguangJ
pubmed:issnType
Electronic
pubmed:volume
55
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1049-57
pubmed:dateRevised
2010-7-20
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Prognostic value of reading-to-reading blood pressure variability over 24 hours in 8938 subjects from 11 populations.
pubmed:affiliation
Department of Clinical Physiology, Faculty of Health Sciences, Hvidovre University Hospital, Research Center for Prevention and Health, Copenhagen, Denmark.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't