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Randomized Controlled Trial
. 2020 Feb 18;20(1):12.
doi: 10.1186/s12873-020-00309-y.

Oxygen therapy in patients with ST elevation myocardial infarction based on the culprit vessel: results from the randomized controlled SOCCER trial

Arash Mokhtari  1 , Mahin Akbarzadeh  2 , David Sparv  1 , Pallonji Bhiladvala  3 , Håkan Arheden  4 , David Erlinge  1 , Ardavan Khoshnood  5
Affiliations
Randomized Controlled Trial

Oxygen therapy in patients with ST elevation myocardial infarction based on the culprit vessel: results from the randomized controlled SOCCER trial

Arash Mokhtari et al. BMC Emerg Med. .

Abstract

Background: Oxygen (O2) treatment has been a cornerstone in the treatment of patients with myocardial infarction. Recent studies, however, state that supplemental O2 therapy may have no effect or harmful effects in these patients. The aim of this study was thus to evaluate the effect of O2 therapy in patients with ST Elevation Myocardial Infarction (STEMI) based on the culprit vessel; Left Anterior Descending Artery (LAD) or Non-LAD.

Methods: This was a two-center, investigator-initiated, single-blind, parallel-group, randomized controlled trial at the Skåne university hospital, Sweden. A simple computer-generated randomization was used. Patients were either randomized to standard care with O2 therapy (10 l/min) or air until the end of the primary percutaneous coronary intervention. The patients underwent a Cardiac Magnetic Resonance Imaging (CMRI) days 2-6. The main outcome measures were Myocardium at Risk (MaR), Infarct Size (IS) and Myocardial Salvage Index (MSI) as measured by CMRI, and median high-sensitive troponin T (hs-cTnT).

Results: A total of 229 patients were assessed for eligibility, and 160 of them were randomized to the oxygen or air arm. Because of primarily technical problems with the CMRI, 95 patients were included in the final analyses; 46 in the oxygen arm and 49 in the air arm. There were no significant differences between patients with LAD and Non-LAD as culprit vessel with regard to their allocation (oxygen or air) with regards to MSI, MaR, IS and hs-cTnT.

Conclusion: The results indicate that the location of the culprit vessel has probably no effect on the role of supplemental oxygen therapy in STEMI patients.

Trial registration: Swedish Medical Products Agency (EudraCT No. 2011-001452-11) and ClinicalTrials.gov Identifier (NCT01423929).

Keywords: Cardiac magnetic resonance imaging; High-sensitive troponin T; Infarct size; Left anterior descending artery; Myocardial infarction; Myocardial salvage index; Myocardium at risk; Oxygen; Randomized controlled trials; ST elevation myocardial infarction.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Patient flow diagram
Fig. 2
Fig. 2
ECG findings with respect to the culprit lesion
Fig. 3
Fig. 3
Central Illustration
See this image and copyright information in PMC

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