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Sex as a determinant of prehospital ECG in ST- and non-ST elevation myocardial infarction patients
  1. Kristina Klerdal1,
  2. Christoph Varenhorst2,
  3. Stefan James2,
  4. Lars Alfredsson1,
  5. Hans Blomberg3,
  6. Tahereh Moradi1,4
  1. 1Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
  2. 2Department of Medical Sciences, Cardiology and Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden
  3. 3Department of Surgical Sciences, Anesthesiology and Intensive Care, Uppsala University Hospital, Uppsala, Sweden
  4. 4Centre for Epidemiology and Social Medicine, Health Care Services, Stockholm County Council, Stockholm, Sweden
  1. Correspondence to Kristina Klerdal, Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, Stockholm SE-171 77, Sweden; Kristina.Klerdal{at}

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We read the article by Quinn et al1 on the effects of prehospital 12-lead ECG (PHECG) on processes of care and mortality with great interest. The authors conclude that when a PHECG was used, patients with ST-elevation myocardial infarction and non-ST elevation myocardial infarction had better survival compared with those without. Interestingly, among the determinants associated with PHECG use, the authors identify female patients to be less likely to have a PHECG than male patients.

When the authors discuss possible explanations to the sex differences in PHECG use, they suggest that the predominately male …

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  • Contributors TM contributed to acquisition of data. KK conceived the letter, analysed the data and wrote the first draft. CV, SJ, LA, HB and TM contributed with editing of the content and specifics of the letter. All authors reviewed and approved the final product.

  • Competing interests None.

  • Ethics approval Regionala etikprövningsnämnden i Stockholm (Dnr:2009/587-32).

  • Provenance and peer review Not commissioned; externally peer reviewed.

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