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Incidence, duration and survival of ventricular fibrillation in out-of-hospital cardiac arrest patients in Sweden
[external]. (Prehospital akutsjukvård)
2000 (English)In: Resuscitation, ISSN 0300-9572, E-ISSN 1873-1570, Vol. 44, no 1, p. 7-17Article in journal (Refereed) Published
Abstract [en]

The chance of survival from ventricular fibrillation (VF) is up to ten times higher than those with other cardiac arrest rhythms. To calculate the effect of out-of-hospital resuscitation organisations on survival, it is necessary to know the percentage of cardiac arrest patients initially in VF and the relationship between delay time to defibrillation and survival. AIM: To study the incidence of VF at the time of cardiac arrest and on first ECG, the duration of VF and the relation between time to defibrillation and survival. METHOD: The Swedish Cardiac Arrest Registry has collected standardised reports on out-of-hospital cardiac arrests from ambulance organisations in Sweden, serving 60% of the Swedish population. RESULTS: In 14065 cases of out-of-hospital cardiac arrest collected between 1990 and 1995, resuscitation was attempted in 10966 cases. INCIDENCE: The first ECG showed VF in 43% of all patients. The incidence of VF at the time of cardiac arrest was estimated to be 60-70% in all patients and 80-85% in the cases with probable heart disease. DURATION: The estimated disappearance rate of VF was slow. Thirty minutes after collapse approximately 40% of the patients were in VF. SURVIVAL: Overall survival to 1 month was only 1.6% for patients with non-shockable rhythms and 9.5% for patients found in VF. With increasing time to defibrillation, the survival rate fell rapidly from approximately 50% with a minimal delay to 5% at 15 min. CONCLUSIONS: This study suggests a high initial incidence of VF among out-of-hospital cardiac arrest patients and a slow rate of transformation into a non-shockable rhythm. The survival rate with very short delay times to defibrillation was approximately 50%, but decreased rapidly as the delay increased.

Place, publisher, year, edition, pages
Elsevier Ireland Ltd , 2000. Vol. 44, no 1, p. 7-17
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Medical and Health Sciences
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URN: urn:nbn:se:hb:diva-7896DOI: 10.1016/S0300-9572(99)00155-0Local ID: 2320/8862OAI: oai:DiVA.org:hb-7896DiVA, id: diva2:888778
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2017-09-27Bibliographically approved

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Herlitz, Johan

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