A postoperative patient with a pulse oximetry reading of 87% likely indicates what condition?

A postoperative patient presenting with a pulse oximetry reading of 87% typically indicates hypoxemia, which can be associated with several respiratory complications. Among the provided options, atelectasis is the most likely condition linked to this low oxygen saturation level.

Atelectasis refers to the collapse or incomplete expansion of the lung or a portion of it, commonly occurring after surgery, particularly when patients are under anesthesia or are unable to take deep breaths due to pain or discomfort. This condition can severely impair gas exchange in the lungs, leading to reduced oxygenation of the blood, as reflected by the low pulse oximetry reading. In a postoperative setting, the development of atelectasis is often due to factors such as shallow breathing, the effects of anesthesia, or prolonged immobility.

Recognizing atelectasis is crucial, as it can lead to more severe complications, including worsening respiratory distress and increased risk of pneumonia if not addressed promptly. Therefore, a pulse oximetry reading of 87% would raise a flag for possible atelectasis in a postoperative patient, necessitating further evaluation and intervention such as incentive spirometry or encouraging the patient to take deeper breaths.