What abnormalities would be seen in bedside spirometry tests for the patient with severe atelectasis?

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Severe atelectasis, which is the collapse or closure of a portion of the lung resulting in reduced or absent gas exchange, can lead to reduced lung volumes. Vital capacity (the maximum amount of air a person can exhale after inhaling as deeply as possible) and inspiratory capacity (the maximum amount of air a person can inhale after exhaling as much as possible) are reduced in patients with severe atelectasis. The FEV1/FVC ratio (the percentage of the forced expiratory volume in the first second of exhalation to the forced vital capacity) may not necessarily be reduced in patients with atelectasis, as this ratio is more indicative of obstructive lung diseases, such as asthma or chronic obstructive pulmonary disease.

What Abnormalities Would Be Seen in Bedside Spirometry Tests for the Patient