The amount of oxygen set and delivered by the ventilator during inspiration; usually expressed as a percentage of oxygen between 21 and 100 percent.
The set number of breaths delivered by the ventilator per minute. In certain ventilator modes, there may not be a set rate (those modes allow the patient to breathe on their own).
The total number of breaths measured (may be from the ventilator and/or patient initiated). The total rate reflects the total number of breaths per minute.
The volume of gas set to be delivered to the lungs by the ventilator with each breath. The tidal volume refers to the size of the breaths. Tidal volume is usually expressed in milliliters (mL).
The volume of gas delivered to the patient by the ventilator.
The actual volume of gas exhaled by the patient. The exhaled tidal volume will often differ from the prescribed tidal volume.
The pressure applied at the end of exhalation to prevent the air sacs in the lungs from collapsing. PEEP can help improve oxygenation. Pressure is usually expressed in centimeters of water (cmH2O).
The inspiratory effort needed to “trigger” the ventilator to recognize the patient is trying to inhale.
The set amount of time for the ventilator to deliver a breath to the patient.
The set amount of pressure generated in the lungs by the ventilator with each breath. Inspiratory pressure is expressed in cmH2O units.
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