Critical care ventilation is a type of mechanical ventilation used to provide respiratory support to critically ill patients in a hospital setting. This type of ventilation typically involves the administration of high-pressure, high-volume breaths to the patient, often with the assistance of a ventilator machine. It is used to help the patient maintain adequate oxygenation and ventilation, and can be used to treat a variety of medical conditions, such as respiratory failure, shock, and sepsis.