A nurse is assessing a client who has postoperative atelectasis and is hypoxic. Which of the following manifestations should the nurse expect?

Intercostal retractions, or the inward movement of the chest wall between the ribs, are a sign of respiratory distress and hypoxia. They indicate increased work of breathing and reduced lung expansion, which are common in clients who have postoperative atelectasis. Atelectasis is a collapse of alveoli in a part of the lung, which impairs gas exchange and oxygenation.

a) Lethargy, or a state of reduced mental alertness and energy, is not a typical manifestation of hypoxia. It can be caused by other factors, such as pain, medication, infection, or electrolyte imbalance. Hypoxia usually causes restlessness, anxiety, or confusion.
b) Bradycardia, or a slow heart rate, is not a typical manifestation of hypoxia. It can be caused by other factors, such as medication, vagal stimulation, or heart block. Hypoxia usually causes tachycardia, or a fast heart rate, as the body tries to compensate for the low oxygen level.
d) Bradypnea, or a slow respiratory rate, is not a typical manifestation of hypoxia. It can be caused by other factors, such as medication, brain injury, or metabolic alkalosis. Hypoxia usually causes tachypnea, or a fast respiratory rate, as the body tries to increase oxygen intake and carbon dioxide elimination.

Heparin is an anticoagulant that prevents the formation of new clots and the extension of existing clots. It is the drug of choice for treating acute pulmonary embolism, which is a life-threatening condition caused by a blood clot that travels to the lungs and blocks a pulmonary artery.

a) Dexamethasone is a corticosteroid that reduces inflammation and suppresses immune response. It is not indicated for treating pulmonary embolism, but it may be used for other pulmonary conditions, such as asthma or COPD.
b) Atropine is an anticholinergic that blocks the action of acetylcholine and increases heart rate and cardiac output. It is not indicated for treating pulmonary embolism, but it may be used for bradycardia or asystole.
d) Furosemide is a loop diuretic that increases urine output and reduces fluid volume and blood pressure. It is not indicated for treating pulmonary embolism, but it may be used for heart failure or edema.