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Oxygen Therapy in Suspected Acute Myocardial Infarction
Soder Sjukhuset, Karolinska Inst, Dept Clin Sci & Educ, Div Cardiol, Sjukhusbacken 10, S-11883 Stockholm, Sweden..
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Kardiologi. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Uppsala kliniska forskningscentrum (UCR).ORCID-id: 0000-0003-4413-9736
Danderyd Hosp, Karolinska Inst, Dept Clin Sci, Cardiol, Stockholm, Sweden..
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för medicinska vetenskaper, Kardiologi.ORCID-id: 0000-0002-5795-0061
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2017 (Engelska)Ingår i: New England Journal of Medicine, ISSN 0028-4793, E-ISSN 1533-4406, Vol. 377, nr 13, s. 1240-1249Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

BACKGROUND The clinical effect of routine oxygen therapy in patients with suspected acute myocardial infarction who do not have hypoxemia at baseline is uncertain. METHODS In this registry-based randomized clinical trial, we used nationwide Swedish registries for patient enrollment and data collection. Patients with suspected myocardial infarction and an oxygen saturation of 90% or higher were randomly assigned to receive either supplemental oxygen (6 liters per minute for 6 to 12 hours, delivered through an open face mask) or ambient air. RESULTS A total of 6629 patients were enrolled. The median duration of oxygen therapy was 11.6 hours, and the median oxygen saturation at the end of the treatment period was 99% among patients assigned to oxygen and 97% among patients assigned to ambient air. Hypoxemia developed in 62 patients (1.9%) in the oxygen group, as compared with 254 patients (7.7%) in the ambient-air group. The median of the highest troponin level during hospitalization was 946.5 ng per liter in the oxygen group and 983.0 ng per liter in the ambient-air group. The primary end point of death from any cause within 1 year after randomization occurred in 5.0% of patients (166 of 3311) assigned to oxygen and in 5.1% of patients (168 of 3318) assigned to ambient air (hazard ratio, 0.97; 95% confidence interval [CI], 0.79 to 1.21; P = 0.80). Rehospitalization with myocardial infarction within 1 year occurred in 126 patients (3.8%) assigned to oxygen and in 111 patients (3.3%) assigned to ambient air (hazard ratio, 1.13; 95% CI, 0.88 to 1.46; P = 0.33). The results were consistent across all predefined subgroups. CONCLUSIONS Routine use of supplemental oxygen in patients with suspected myocardial infarction who did not have hypoxemia was not found to reduce 1-year all-cause mortality.

Ort, förlag, år, upplaga, sidor
MASSACHUSETTS MEDICAL SOC , 2017. Vol. 377, nr 13, s. 1240-1249
Nationell ämneskategori
Kardiologi
Identifikatorer
URN: urn:nbn:se:uu:diva-337093DOI: 10.1056/NEJMoa1706222ISI: 000411838100007PubMedID: 28844200OAI: oai:DiVA.org:uu-337093DiVA, id: diva2:1171671
Forskningsfinansiär
Hjärt-LungfondenVetenskapsrådetStiftelsen för strategisk forskning (SSF)AstraZenecaTillgänglig från: 2018-01-08 Skapad: 2018-01-08 Senast uppdaterad: 2018-01-08Bibliografiskt granskad

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