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Anxiolytics in patients suffering a suspected acute coronary syndrome: Multi-centre randomised controlled trial in Emergency Medical Service
University of Borås, School of Health Science. (Prehospital akutsjukvård)
University of Borås, School of Health Science. (Prehospital akutsjukvård)
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2013 (English)In: International Journal of Cardiology, ISSN 0167-5273, E-ISSN 1874-1754, Vol. 168, no 4, p. 3580-3587Article in journal (Refereed) Published
Abstract [en]

Background: The prehospital treatment of pain and discomfort among patients who suffer from acute coronary syndrome (ACS) needs a treatment strategy which combines relief of pain with relief of anxiety. Aim: The aim of the present study was to evaluate the impact on pain and anxiety of the combination of an anxiolytic and an analgesic as compared with an analgesic alone in the prehospital setting of suspected ACS. Methods: A multi-centre randomised controlled trial compared the combination of Midazolam (Mi) + Morphine (Mo) and Mo alone. All measures took part: Prior to randomisation, 15 min thereafter and on admission to a hospital. Inclusion criteria were: 1) pain raising suspicion of ACS and 2) pain score ≥4. Primary endpoint: Pain score after 15 min. Results: In all, 890 patients were randomised to Mi + Mo and 873 to Mo alone. Pain was reduced from a median of 6 to 4 and finally to 3 in both groups. The mean dose of Mo was 5.3 mg in Mi + Mo and 6.0 mg in Mo alone (p b 0.0001). Anxiety was reported in 66% in Mi + Mo and in 64% in Mo alone at randomisation (NS); 15 min thereafter in 31% and 39% (p = 0.002) and finally in 12% and 26% respectively (p b 0.0001). On admission to a hospital nausea or vomiting was reported in 9% in Mi + Mo and in 13% in Mo alone (p = 0.003). Drowsiness differed; 15% and 14% were drowsy in Mi + Mo versus 2% and 3% in Mo alone respectively (p b 0.001). Conclusion: Despite the fact that the combination of anxiolytics and analgesics as compared with analgesics alone reduced anxiety and the requirement of Morphine in the prehospital setting of acute coronary syndrome, this strategy did not reduce patients' estimation of pain (primary endpoint). More effective pain relief among these patients is warranted.

Place, publisher, year, edition, pages
Elsevier Ireland Ltd , 2013. Vol. 168, no 4, p. 3580-3587
Keywords [en]
Chest pain, Anxiety, Cardiology nursing, Emergency Medical Services, Benzodiazepine, Ambulanssjukvård
Keywords [sv]
Vårdutveckling
National Category
Cardiac and Cardiovascular Systems
Research subject
Integrated Caring Science
Identifiers
URN: urn:nbn:se:hb:diva-1644DOI: 10.1016/j.ijcard.2013.05.067ISI: 000326219600072PubMedID: 23727103Local ID: 2320/12916OAI: oai:DiVA.org:hb-1644DiVA, id: diva2:869713
Note

The authors would like to thank the EMS organisations and their

personnel in the Region of Västra Götaland and in the city of Halmstad,

Sweden. Special thanks to the contact persons in each organisation

and last but not least to all patients agreeing to take part in the trial.

Sponsorship:

This study was funded by the University of Borås, The Health &

Medical Care Committee of the Regional Executive Board, Region

Västra Götaland and Sparbanksstiftelsen Sjuhärad, Sweden.

Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-11-25Bibliographically approved

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Wireklint Sundström, BirgittaBång, AngelaHerlitz, Johan

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