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Vögele A, van Veelen MJ, Dal Cappello T, et al. Effect of Acute Exposure to Altitude on the Quality of Chest Compression-Only Cardiopulmonary Resuscitation in Helicopter Emergency Medical Services Personnel: A Randomized, Controlled, Single-Blind Crossover Trial. J Am Heart Assoc. 2021;10(23):e021090doi: 10.1161/JAHA.121.021090.
Vögele, A., van Veelen, M. J., Dal Cappello, T., Falla, M., Nicoletto, G., Dejaco, A., Palma, M., Hüfner, K., Brugger, H., & Strapazzon, G. (2021). Effect of Acute Exposure to Altitude on the Quality of Chest Compression-Only Cardiopulmonary Resuscitation in Helicopter Emergency Medical Services Personnel: A Randomized, Controlled, Single-Blind Crossover Trial. Journal of the American Heart Association, 10(23), e021090. https://doi.org/10.1161/JAHA.121.021090
Vögele, Anna, et al. "Effect of Acute Exposure to Altitude on the Quality of Chest Compression-Only Cardiopulmonary Resuscitation in Helicopter Emergency Medical Services Personnel: A Randomized, Controlled, Single-Blind Crossover Trial." Journal of the American Heart Association vol. 10,23 (2021): e021090. doi: https://doi.org/10.1161/JAHA.121.021090
Vögele A, van Veelen MJ, Dal Cappello T, Falla M, Nicoletto G, Dejaco A, Palma M, Hüfner K, Brugger H, Strapazzon G. Effect of Acute Exposure to Altitude on the Quality of Chest Compression-Only Cardiopulmonary Resuscitation in Helicopter Emergency Medical Services Personnel: A Randomized, Controlled, Single-Blind Crossover Trial. J Am Heart Assoc. 2021 Dec 07;10(23):e021090. doi: 10.1161/JAHA.121.021090. Epub 2021 Dec 02. PMID: 34854317.
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J Am Heart Assoc. 2021 Dec 07;10(23):e021090. doi: 10.1161/JAHA.121.021090. Epub 2021 Dec 02.

Effect of Acute Exposure to Altitude on the Quality of Chest Compression-Only Cardiopulmonary Resuscitation in Helicopter Emergency Medical Services Personnel: A Randomized, Controlled, Single-Blind Crossover Trial.

Journal of the American Heart Association

Anna Vögele, Michiel Jan van Veelen, Tomas Dal Cappello, Marika Falla, Giada Nicoletto, Alexander Dejaco, Martin Palma, Katharina Hüfner, Hermann Brugger, Giacomo Strapazzon

Affiliations

  1. Institute of Mountain Emergency Medicine Eurac Research Bolzano Italy.
  2. Department of Psychology and Cognitive Science Center for Mind/Brain Sciences CIMeC University of Trento Rovereto, Trento Italy.
  3. Department of Anesthesiology University Hospital of Regensburg Germany.
  4. Department of Psychiatry, Psychotherapy and Psychosomatics University Hospital for Psychiatry II Innsbruck Medical University Innsbruck Austria.
  5. International Commission for Mountain Emergency Medicine (ICAR MEDCOM) Kloten Switzerland.

PMID: 34854317 DOI: 10.1161/JAHA.121.021090

Abstract

Background Helicopter emergency medical services personnel operating in mountainous terrain are frequently exposed to rapid ascents and provide cardiopulmonary resuscitation (CPR) in the field. The aim of the present trial was to investigate the quality of chest compression only (CCO)-CPR after acute exposure to altitude under repeatable and standardized conditions. Methods and Results Forty-eight helicopter emergency medical services personnel were divided into 12 groups of 4 participants; each group was assigned to perform 5 minutes of CCO-CPR on manikins at 2 of 3 altitudes in a randomized controlled single-blind crossover design (200, 3000, and 5000 m) in a hypobaric chamber. Physiological parameters were continuously monitored; participants rated their performance and effort on visual analog scales. Generalized estimating equations were performed for variables of CPR quality (depth, rate, recoil, and effective chest compressions) and effects of time, altitude, carryover, altitude sequence, sex, qualification, weight, preacclimatization, and interactions were analyzed. Our trial showed a time-dependent decrease in chest compression depth (

Keywords: cardiac arrest; chest compression; helicopter emergency medical services; hypobaric hypoxia; resuscitation

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