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Improvements in logistics could increase survival after out-of-hospital cardiac arrest in Sweden
Högskolan Dalarna, Medicinsk vetenskap.ORCID iD: 0000-0001-6885-991X
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2013 (English)In: Journal of Internal Medicine, ISSN 0954-6820, E-ISSN 1365-2796, Vol. 273, no 6, p. 622-627Article in journal (Refereed) Published
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Text
Abstract [en]

Objectives. In a review based on estimations and assumptions, to report the estimated number of survivors after out-of-hospital cardiac arrest (OHCA) in whom cardiopulmonary resuscitation (CPR) was started and to speculate about possible future improvements in Sweden.

Design. An observational study. Setting All ambulance organisations in Sweden. Subjects Patients included in the Swedish Cardiac Arrest Registry who suffered an OHCA between January 1, 2008 and December 31, 2010. Approximately 80% of OHCA cases in Sweden in which CPR was started are included. Interventions None

Results. In 11005 patients, the 1-month survival rate was 9.4%. There are approximately 5000 OHCA cases annually in which CPR is started and 30-day survival is achieved in up to 500 patients yearly (6 per 100000 inhabitants). Based on findings on survival in relation to the time to calling for the Emergency Medical Service (EMS) and the start of CPR and defibrillation, it was estimated that, if the delay from collapse to (i) calling EMS, (ii) the start of CPR, and (iii) the time to defibrillation were reduced to <2min, <2min, and <8min, respectively, 300400 additional lives could be saved.

Conclusion. Based on findings relating to the delay to calling for the EMS and the start of CPR and defibrillation, we speculate that 300400 additional OHCA patients yearly (4 per 100000 inhabitants) could be saved in Sweden.

Place, publisher, year, edition, pages
2013. Vol. 273, no 6, p. 622-627
Keywords [en]
cardiac arrest, emergency medicine, overall survival
National Category
Clinical Medicine
Identifiers
URN: urn:nbn:se:mdh:diva-32760DOI: 10.1111/joim.12041ISI: 000318986100008PubMedID: 23360556OAI: oai:DiVA.org:mdh-32760DiVA, id: diva2:955027
Available from: 2013-07-05 Created: 2016-08-24 Last updated: 2017-11-28Bibliographically approved
In thesis
1. Cardiopulmonary resuscitation in Sweden – yesterday, today and tomorrow
Open this publication in new window or tab >>Cardiopulmonary resuscitation in Sweden – yesterday, today and tomorrow
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In Sweden, the reported incidence and outcome of out-of-hospital cardiac arrest (OHCA) vary between counties. In the mid -1980s, a national programme in cardiopulmonary resuscitation (CPR) was developed and rescuers have been educated in CPR. Since 1990, Swedish OHCA data are to be reported to the Swedish Cardiac Arrest Register (SCAR). The aim of this thesis was to describe and analyse the incidence and outcome of OHCA and the amount of national training in CPR from data reported to the SCAR and to the CPR training register. The data on OHCAs were related to a variety of epidemiological and quality indicators. Methods: this thesis is based on register data from both the SCAR and the CPR training register. The inclusion criteria were treated OHCAs (I-IV), witnessed treated OHCAs (V) and rescuers educated in CPR (I).The number of participants were: I: CPR training register, 1983-2007, n=2 million rescuers, and SCAR, 1990-2007, n=45,775, II: SCAR, 2008-2009, n=6,457 registered manually or on the web and n=3,522 registered on the web, III: SCAR, 2008-2010, n=2,398 prospectively registered and n=800 retrospectively registered, IV: SCAR, 1992-2011, n=59,926, V: SCAR, 2008-2010, n=11,005. Results: since 1983, 5,000 instructor-trainers have trained more than 50,000 instructors who have trained almost two million of Sweden’s nine million inhabitants to perform adult CPR. The number of bystander CPR attempts for OHCA in Sweden increased from 31% (1992) to 55% (2007) (I). In 2008-2009, the number of reported OHCAs varied between 13 and 52 per 100,000 inhabitants and year. Bystander CPR, cardiac aetiology and longer emergency medical service (EMS) response times were more frequent in less populated areas, but survival was not associated with population density (II). A validation process showed that, there was a 25% missing rate between 2008 and 2010 of OHCAs reported to the SCAR. In the non-reported OHCAs, patients were older and had less frequently received bystander CPR, but, despite this, they also had a higher survival rate (III). From 1992 to 2011, the OHCAs reported to the SCAR increased from 27 to 52 per 100,000 inhabitants and year. Survival to one month increased from 4.8% (1992) to 10.7% (2011), particularly among patients found in a shockable rhythm. This increase in survival was associated with signs of improvement in all four links of the chain of survival (IV). Furthermore, estimates indicate that, if the delay from collapse to 1) calling for an ambulance, 2) the start of CPR, and 3) the time to defibrillation is reduced to <2 min, <2min and <8 min respectively, approximately 300-400 additional lives could be saved (V). Conclusions: there has been an impressive development in the preparedness for and treatment of patients suffering from OHCAs in Sweden during the last 30 years. Improvements in various links in the chain of survival have resulted in a marked increase in survival after OHCA. It suggests that this figure will increase further if the delay to the start of treatment can be reduced still further.

Place, publisher, year, edition, pages
Ineko AB, 2013
National Category
Clinical Medicine
Identifiers
urn:nbn:se:mdh:diva-32901 (URN)978-91-628-8665-3 (ISBN)
Available from: 2017-02-02 Created: 2016-08-24 Last updated: 2017-02-02Bibliographically approved

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