A nurse is caring for a client who presents to the hospital with manifestations of a thoracic injury. Which of the following diagnostic tools would the nurse anticipate the health care provider to order? (Select all that apply.)
(Select All that Apply.)

Choice A Reason:

Hypoxemia due to dead space is not appropriate. Dead space refers to areas of the lung where ventilation occurs but no perfusion takes place. In ARDS, hypoxemia typically occurs due to ventilation-perfusion (V/Q) mismatch and shunting rather than dead space.

Choice B Reason:

Impaired carbon dioxide elimination due to shunting is not appropriate. Shunting occurs when blood bypasses ventilated alveoli, leading to inadequate gas exchange. In ARDS, shunting contributes to hypoxemia, but it doesn't directly impair carbon dioxide elimination.

Choice C Reason:

Decreased pulmonary arterial pressure due to ventilation-perfusion (V/Q) mismatch is incorrect. V/Q mismatch occurs when ventilation and perfusion are mismatched in different areas of the lung. This leads to areas of low ventilation (dead space) and areas of low perfusion (shunting). V/Q mismatch contributes to hypoxemia in ARDS but does not typically lead to decreased pulmonary arterial pressure.

Choice D Reason:

Decreased pulmonary compliance due to stiffness is correct. This is a characteristic feature of ARDS. The inflammation and damage to the alveoli cause them to become stiff, reducing pulmonary compliance and impairing lung expansion during ventilation.

Choice A Reason:

Decreased blood pressure is correct. Decreased blood pressure (hypotension) is the priority finding to monitor for because it is indicative of a severe allergic reaction known as anaphylaxis. Anaphylaxis is a potentially life-threatening condition that can lead to shock, organ failure, and death if not promptly treated. Hypotension in the context of an allergic reaction suggests widespread vasodilation and increased vascular permeability, resulting in a decrease in blood pressure.

Choice B Reason:

Stomach pain is incorrect. Stomach pain may indicate gastrointestinal distress or adverse effects of the antibiotic, but it is not typically as immediately life-threatening as decreased blood pressure in the context of anaphylaxis. While abdominal pain should not be ignored, it is not the priority finding when assessing for signs of anaphylaxis.

Choice C Reason:

Urticaria is incorrect. Urticaria, also known as hives, is a common allergic reaction characterized by raised, itchy welts on the skin. While urticaria can be uncomfortable and distressing, it is not immediately life-threatening. However, urticaria may be a precursor to more severe allergic reactions, such as anaphylaxis, so it is still important to monitor closely.

Choice D Reason:

Lightheadedness is incorrect. Lightheadedness may occur as a result of hypotension in the context of anaphylaxis, but it is not as critical as directly monitoring blood pressure. Lightheadedness may also be caused by other factors, such as anxiety or dehydration, and may not always indicate a severe allergic reaction. While it is important to assess for lightheadedness and monitor the client's overall condition, it is not the priority finding compared to decreased blood pressure.