

This is necessary when obstructive diseases are present. However, most ventilators can deliver up to 120 L/min if a patient needs a prolonged expiratory time. The normal inspiratory flow rate should be set at around 60 L/min. The setting can be adjusted depending on the patient’s inspiratory demands. The inspiratory flow rate is a rate that controls how fast a tidal volume is delivered by the ventilator. That is because, if a patient receives an FiO2 greater than 60% for a prolonged period of time, it increases their risk of oxygen toxicity. In this case, your goal should be to wean the FiO2 percentage down to the lowest possible level that still provides adequate oxygenation for the patient. The fraction of inspired oxygen (FiO2) is the concentration of oxygen that is being inhaled by the patient.įor example, a patient with severe hypoxemia may require an FiO2 of 100% when mechanical ventilation is initiated. The frequency setting on the ventilator determines how many breaths are delivered to the patient by the machine. It typically refers to the number of breaths that are taken per minute, and the normal range is 10-20 breaths/minute. The respiratory rate, also referred to as the breathing rate, is simply the rate at which breathing occurs.

The tidal volume setting on the ventilator determines how much air is delivered to the lungs by the machine. Tidal volume refers to the volume of air that is inhaled and exhaled from the lungs during normal breathing.
