A nurse is evaluating teaching on a client who has a new prescription for montelukast to treat asthma. Which of the following statements by the client indicates an understanding of the teaching?

Radiation therapy can cause immunosuppression, which increases the risk of infection. The nurse should monitor the client for signs of infection such as fever, chills, malaise, or purulent drainage.

1. Examine the skin for generalized urticaria. This is not a common side effect of radiation therapy, as urticaria is an allergic reaction that causes hives or welts on the skin. Radiation therapy can cause localized skin irritation, erythema, or dryness, but not generalized urticaria.
2. Review laboratory test results for low hemoglobin. This is not a direct effect of radiation therapy, as hemoglobin is a component of red blood cells that carries oxygen in the blood. Radiation therapy can cause anemia, which is a low number of red blood cells, but not necessarily low hemoglobin.
3. Monitor the mouth for signs of xerostomia. This is not relevant for a client who receives radiation therapy to treat lung cancer, as xerostomia is dry mouth caused by reduced salivary gland function. This can occur in clients who receive radiation therapy to treat head and neck cancer, but not lung cancer.

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.