A nurse is caring for a client who has pneumonia and has been receiving oxygen therapy for several days.
Which of the following findings should the nurse identify as an indication of an adverse effect of oxygen therapy?

Choice A rationale:

Dry skin is not typically associated with respiratory alkalosis. Respiratory alkalosis occurs when the levels of carbon dioxide and oxygen in the blood aren’t balanced. It occurs when you breathe too fast or too deep and carbon dioxide levels drop too low. This condition does not directly cause dry skin.

Choice B rationale:

Abdominal pain is not a common symptom of respiratory alkalosis. The condition is usually caused by over-breathing (called hyperventilation) that occurs when you breathe very deeply or rapidly. While it can cause discomfort, it does not typically result in abdominal pain.

Choice C rationale:

Diarrhea is not a direct symptom of respiratory alkalosis. However, the stress or anxiety that can cause hyperventilation and lead to respiratory alkalosis might also upset the digestive system and cause diarrhea. It’s important to note that while stress and anxiety can cause both conditions, they are not a direct result of the respiratory alkalosis itself.

Choice D rationale:

Flank pain is not a symptom of respiratory alkalosis. Flank pain is often associated with kidney problems, not respiratory conditions. Respiratory alkalosis is characterized by symptoms such as dizziness, bloating, feeling light-headed, numbness or muscle spasms in the hands and feet, discomfort in the chest area, confusion, dry mouth, tingling in the arms, heart palpitations, and feeling short of breath.

Choice A rationale:

Crackles are a common symptom of pleural effusion. They are abnormal lung sounds that are heard when a patient with pleural effusion breathes in. The sound is caused by the opening of small airways and alveoli collapsed by fluid, exudate, or lack of aeration during expiration.

Choice B rationale:

Crepitus is not typically associated with pleural effusion. Crepitus is a crackling or grating sound or feeling produced by air in subcutaneous tissue or by the rubbing together of fragments of broken bone. In the context of respiratory health, crepitus might be felt if there is subcutaneous emphysema, where air gets into tissues under the skin covering the chest wall or neck.

Choice C rationale:

Substernal retractions are not a typical symptom of pleural effusion. Retractions are a sign of respiratory distress, but they are more commonly associated with conditions that cause upper airway obstruction or severe lung disease, such as asthma or pneumonia. Choice D rationale:

Dullness upon percussion is a classic sign of pleural effusion. When there is fluid in the pleural space, it prevents the normal resonant sound produced by the air-filled lungs from being heard. Instead, a dull sound is heard when the chest is percussed.