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Does the use of steps decrease the quality of cardiopulmonary resuscitation when children as rescuers perform chest compression?

      I have read the article by Otero-Agra et al. titled “What biomechanical factors are more important in compression depth for children lifesavers? A randomized crossover study” with great interest [
      • Otero-Agra M.
      • Rodriguez-Nunez A.
      • Rey E.
      • Abelairas-Gomez C.
      • Besada-Saavedra I.
      • Anton-Ogando A.P.
      • et al.
      What biomechanical factors are more important in compression depth for children lifesavers? A randomized crossover study.
      ]. Although the study results showed that the use of steps did not increase cardiopulmonary resuscitation (CPR) quality, I have several concerns about the study conclusion, and will share these with the authors and readers of the journal.
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