Home » Mouth-to-mouth resuscitation? It also works with the mask

Mouth-to-mouth resuscitation? It also works with the mask

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Mouth-to-mouth resuscitation?  It also works with the mask

Mouth-to-mouth resuscitation also works when done wearing a mask, which reduces the risk of contagion from Covid. This is demonstrated by new research presented at the very recent annual congress of the European Society of Anaesthesiology and Intensive Care (Esaic). Of course, doing mouth-to-mouth resuscitation with the mask is a little different and for this reason anesthesiologists find it useful to learn how to practice it since the virus is still circulating.

Resuscitation during the pandemic

Mouth-to-mouth ventilation, in which the rescuer presses their lips against the patient’s and blows air into their lungs, along with chest compressions, is an integral part of cardiopulmonary resuscitation (CPR), for both adults and children.

Researchers from the Department of Medical Simulation at Masaryk University in the Czech Republic recall in the study that at the beginning of the Covid pandemic, CPR training was limited to chest compression lessons (hand-only CPR) or training. ventilation with the bag mask, due to concern about infection.

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The new rescue rules

In fact, the WHO has considered these life-saving maneuvers – even if indispensable and to be carried out without delay – as “highly at risk of viral contamination for all rescuers” and as such to be carried out with specific precautions. Even in Italy, the Covid epidemic has changed first aid procedures.

A circular from the Ministry of Health, in fact, recommended in June 2020 that external ventilation be performed only with the use of a self-expanding balloon (Ambu type) and possibly but only in extreme cases (for example problems with the balloon-mask, measurement inadequate mask, pediatric patients) it is recommended to use the pocket-mask equipped with a spacer tube (Mount catheter), when the rescuer consciously believes that the risk for himself is clearly lower than the benefit for the victim “.

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Research

In all countries, therefore, a manual resuscitator (a portable self-inflating bag) was used to provide relief during the pandemic, rather than the mouth to blow air into the patient’s lungs. But this type of equipment is used only by health workers or firefighters, while volunteers who choose to become first responders or medical students must still learn the method of mouth-to-mouth resuscitation.

From the need to find a practical solution to this problem, the idea of ​​the Czech researchers was born, who decided to verify if it was possible to practice mouth-to-mouth resuscitation wearing the breathable face mask. To carry out the experiment, a reusable Ffp2 three-layer nanofiber mask was used. In the study, conducted in May 2021 ,,104 medical students performed mouth-to-mouth ventilation while wearing masks for two minutes on each of the three mannequins (two adults and one child).

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Breathing effective in 90% of cases

Breathing performed with these modalities was evaluated by some trained observers who verified that more than 90% of the breaths performed in the mouth of each manikin could be considered effective, because they caused the manikin’s chest to rise. The researchers also used an app to measure the volume of air breathed in the two types of mannequins. The volume was optimal (400-600 ml for the adult and 30-50 ml for the child) in 33% of the breaths for the adult manikin and in 44% of those exhaled in the baby manikin.

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“Mouth-to-mouth ventilation through a breathable mask was effective more than 90% of the time, allowing it to be used in rescue training during the pandemic,” he explained. Vaclav Vafek, from the Faculty of Medicine of Masaryk University and lead author of the research -. We cannot predict how serious the pandemic will be in the autumn and what Covid measures will be in the coming months, but using this technique we will be able to continue to provide essential training for mouth-to-mouth resuscitation. “

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