What tool can be used to assist with breathing for a casualty?

The bag-valve-mask (BVM) is specifically designed to assist with breathing by providing positive pressure ventilation to a casualty who is unable to breathe adequately on their own. It consists of a self-expanding bag, a unidirectional valve, and a facial mask. When properly used, the BVM allows the medic to deliver breaths to the patient by squeezing the bag, forcing air into the lungs. This method is especially critical in cases of respiratory failure where the casualty cannot maintain adequate oxygenation or ventilation.

Using a BVM effectively requires trained personnel who understand the importance of achieving a good seal between the mask and the face, as well as the appropriate technique for providing breaths. It is particularly useful in a tactical environment where casualties may experience altered levels of consciousness or have airway obstructions that necessitate intervention to maintain ventilation.

While other tools mentioned, like a needle decompression kit, an oxygen tank with a mask, and a manual suction device, serve specific purposes in the management of various medical emergencies, they do not directly facilitate assisted ventilation in the same way that a BVM does.