What device is commonly used to assist with artificial ventilation?

The bag-valve mask is a device commonly used to assist with artificial ventilation during medical emergencies where a patient is unable to breathe adequately on their own. This device consists of a self-expanding bag, a unidirectional valve, and a face mask. When the bag is squeezed, it delivers a volume of air or oxygen to the patient, manually assisting or providing full ventilation.

The bag-valve mask is designed to create a seal against the patient's face, allowing for effective delivery of breaths. It is essential in various settings, such as during resuscitation efforts or when providing ventilation support to patients with respiratory failure.

While other devices mentioned play important roles in patient assessment and airway management, they do not function in the same capacity as the bag-valve mask. For example, a stethoscope is used for auscultation to assess heart and lung sounds, a pulse oximeter measures oxygen saturation in the blood, and an endotracheal tube is primarily intended for securing the airway but does not assist with ventilation unless connected to a ventilator or linked with manual ventilation devices.