Correct Answer: B

Rationale: Before inserting an indwelling urinary catheter for a female client, the nurse should apply sterile gloves before cleansing the perineal area to prevent infection. Performing perineal care before the procedure is incorrect as it should be done after catheter insertion. Placing the client in a side-lying position is not necessary for this procedure. Lubricating the catheter with petroleum jelly is not recommended as it can damage the catheter; using a water-soluble lubricant is preferred.

Correct Answer: B

Rationale: The correct answer is B. A high PaCO2 level (55 mm Hg) in a client with chronic emphysema suggests respiratory acidosis, which requires further treatment. In chronic emphysema, impaired gas exchange leads to elevated carbon dioxide levels in the blood. Option A (PaO2 level of 89 mm Hg) is near the normal range and does not indicate immediate treatment. Option C (HCO3 level of 25 mEq/L) and option D (pH level of 7.37) are within normal limits and do not suggest the need for further treatment in this context.

Correct Answer: A

Rationale: Administering oxygen is the initial action for a healthcare provider when a patient presents with shortness of breath because it helps alleviate the patient's symptoms by improving oxygenation. Providing oxygen takes precedence over other actions such as repositioning the patient, checking for abnormal breath sounds, or assessing oxygen saturation. While these actions are important, ensuring the patient has an adequate oxygen supply is crucial in the initial management of shortness of breath.

Correct Answer: A

Rationale: Administering oxygen is the best intervention for a patient experiencing respiratory distress because it helps improve oxygenation and alleviate respiratory distress. Oxygen therapy is a critical and priority intervention in such cases as it aims to increase oxygen levels in the blood. Administering bronchodilators may be beneficial for specific respiratory conditions like asthma or COPD, but oxygen should be the initial priority. Administering IV fluids and providing humidified air, while important in certain situations, are not the primary interventions for respiratory distress.

Correct Answer: A

Rationale: Administering oxygen is the initial intervention for a patient experiencing breathing difficulties post-surgery. Providing oxygen helps improve oxygenation and alleviate respiratory distress. Repositioning the patient, checking oxygen saturation, and elevating the head of the bed are important interventions but administering oxygen takes precedence in addressing hypoxia and respiratory compromise.