A randomised crossover comparison of mouth-to-face-shield ventilation and mouth-to-pocket-mask ventilation by surf lifeguards in a manikin

Abstract

SummaryThirty surf lifeguards (mean (SD) age: 25.1 (4.8) years; 21 male, 9 female) were randomly assigned to perform 2 9 3 min of cardiopulmonary resuscitation on a manikin using mouth-to-face-shield ventilation (AMBU â LifeKey) and mouth-to-pocket-mask ventilation (Laerdal Pocket Mask TM ). Interruptions in chest compressions, effective ventilation (visible chest rise) ratio, tidal volume and inspiratory time were recorded. Interruptions in chest compressions per cycle were increased with mouth-to-face-shield ventilation (mean (SD) 8.6 (1.7) s) compared with mouth-topocket-mask ventilation (6.9 (1.2) s, p < 0.0001). The proportion of effective ventilations was less using mouth-toface-shield ventilation (199/242 (82%)) compared with mouth-to-pocket-mask ventilation (239/240 (100%), p = 0.0002). Tidal volume was lower using mouth-to-face-shield ventilation (mean (SD) 0.36 (0.20) l) compared with mouth-to-pocket-mask ventilation (0.45 (0.20) l, p = 0.006). No differences in inspiratory times were observed between mouth-to-face-shield ventilation and mouth-to-pocket-mask ventilation. In conclusion, mouth-to-face-shield ventilation increases interruptions in chest compressions, reduces the proportion of effective ventilations and decreases delivered tidal volumes compared with mouth-to-pocket-mask ventilation.

Cardiopulmonary resuscitation quality among lifeguards: self-perception, knowledge, and performance

“…Therefore, immediate good-quality cardiopulmonary resuscitation (CPR) at the scene, with early ventilations, is essential to increase the chances of survival and to reduce the neurologic damage of survivors [1,2]. Evidence indicates that in real life, quality of CPR, even when performed by staff with duty to assist, used to be poor [3][4][5][6][7][8][9][10]. In drowning events, the extreme physical conditions in which lifeguards have to perform CPR (sometimes after performing victim's water rescue), may result in even worse CPR quality [11].…”

Basismaßnahmen zur Wiederbelebung Erwachsener und Verwendung automatisierter externer Defibrillatoren

“…Wird eine solche Infektionsbarriere verwendet, ist dafür Sorge zu tragen, dass es dadurch nicht zu unnötigen Unterbrechungen der Wiederbelebung kommt. Studien an Übungsphantomen haben gezeigt, dass die Qualität einer Wiederbelebung besser ist, wenn eine Taschenmaske verwendet wird, als wenn Beutel-Masken-Beatmung oder ein Gesichtstuch zur Anwendung kommt [260][261][262].…”

Competence in the use of supraglottic airways by Australian surf lifesavers for cardiac arrest ventilation in a manikin

“…Lifesavers in Australia are taught to use standard basic life support techniques for ventilation during cardiopulmonary resuscitation (CPR), such as pocket mask (PM) rescue breathing and bag valve mask (BVM). First responders may have limited ability to use these devices . Lifesavers in Australia are volunteer emergency service workers, who receive between 4 and 20 h of emergency first aid and resuscitation training at the time of qualification followed by annual re‐certification.…”

“…First responders may have limited ability to use these devices. [1][2][3][4][5][6][7][8][9] Lifesavers in Australia are volunteer emergency service workers, who receive between 4 and 20 h of emergency first aid and resuscitation training at the time of qualification followed by annual re-certification. The majority do not have any degree-level medical or paramedical training and are aged under 18 years.…”