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dc.contributor.authorIwami, Takuen
dc.contributor.authorNichol, Grahamen
dc.contributor.authorHiraide, Atsushien
dc.contributor.authorHayashi, Yasuyukien
dc.contributor.authorNishiuchi, Tatsuyaen
dc.contributor.authorKajino, Kentaroen
dc.contributor.authorMorita, Hiroshien
dc.contributor.authorYukioka, Hidekazuen
dc.contributor.authorIkeuchi, Hisashien
dc.contributor.authorSugimoto, Hisashien
dc.contributor.authorNonogi, Hiroshien
dc.contributor.authorKawamura, Takashien
dc.contributor.alternative石見, 拓ja
dc.date.accessioned2014-05-27T06:15:01Z-
dc.date.available2014-05-27T06:15:01Z-
dc.date.issued2009-02-10-
dc.identifier.issn0009-7322-
dc.identifier.urihttp://hdl.handle.net/2433/187288-
dc.description.abstract[Background] The impact of ongoing efforts to improve the "chain of survival" for out-of-hospital cardiac arrest (OHCA) is unclear. The objective of this study was to evaluate the incremental effect of changes in prehospital emergency care on survival after OHCA. [Methods and Results] This prospective, population-based observational study involved consecutive patients with OHCA from May 1998 through December 2006. The primary outcome measure was 1-month survival with favorable neurological outcome. Multiple logistic regression analysis was used to assess factors that were potentially associated with better neurological outcome. Among 42 873 resuscitation-attempted adult OHCAs, 8782 bystander-witnessed arrests of presumed cardiac origin were analyzed. The median time interval from collapse to call for medical help, first cardiopulmonary resuscitation, and first shock shortened from 4 (interquartile range [IQR] 2 to 11) to 2 (IQR 1 to 5) minutes, from 9 (IQR 5 to 13) to 7 (IQR 3 to 11) minutes, and from 19 (IQR 13 to 22) to 9 (IQR 7 to 12) minutes, respectively. Neurologically intact 1-month survival after witnessed ventricular fibrillation increased from 6% (6/96) to 16% (49/297; P<0.001). Among all witnessed OHCAs, earlier cardiopulmonary resuscitation (odds ratio per minute 0.89, 95% confidence interval 0.85 to 0.93) and earlier intubation (odds ratio per minute 0.96, 95% confidence interval 0.94 to 0.99) were associated with better neurological outcome. For ventricular fibrillation, only earlier shock was associated with better outcome (odds ratio 0.84, 95% confidence interval 0.80 to 0.88). [Conclusions] Data from a large, population-based cohort demonstrate a continuous increase in OHCA survival with improvement in the chain of survival. The incremental benefit of early advanced care on OHCA survival is also suggested.en
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherAmerican Heart Associationen
dc.rights© 2009 American Heart Association, Inc.en
dc.subjectcardiopulmonary resuscitationen
dc.subjectheart arresten
dc.subjectdeath, suddenen
dc.subjectepidemiologyen
dc.subjectventricular fibrillationen
dc.titleContinuous Improvements in "Chain of Survival" Increased Survival After Out-of-Hospital Cardiac Arrests : A Large-Scale Population-Based Studyen
dc.typejournal article-
dc.type.niitypeJournal Article-
dc.identifier.ncidAA00133542-
dc.identifier.jtitleCirculationen
dc.identifier.volume119-
dc.identifier.issue5-
dc.identifier.spage728-
dc.identifier.epage734-
dc.relation.doi10.1161/CIRCULATIONAHA.108.802058-
dc.textversionnone-
dc.identifier.pmid19171854-
dcterms.accessRightsmetadata only access-
dc.identifier.pissn0009-7322-
dc.identifier.eissn1524-4539-
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