During pulmonary function tests, a patient is found to have approximately 500 mL of air moving in and out of the lungs during normal quiet breathing. The nurse realizes that this finding is considered the:

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Tidal volume refers to the amount of air that moves in and out of the lungs during normal quiet breathing, which is approximately 500 mL in adults. Expiratory reserve volume refers to the additional amount of air that can be forcefully exhaled after a normal exhalation, residual volume refers to the amount of air left in the lungs after maximal exhalation, and vital capacity refers to the maximum amount of air that can be forcefully exhaled after a maximum inhalation.

During Pulmonary Function Tests, a Patient Is Found to Have