Correct Answer: C

Rationale: The correct answer is C: "Avoid drinking more than 1 liter of fluid per day." Clients with heart failure are typically advised to limit their fluid intake to around 1 liter per day to prevent fluid overload, which can worsen their condition. Choices A, B, and D are incorrect because they suggest fluid intakes that are higher than the recommended limit, which could lead to fluid retention and exacerbate heart failure symptoms.

Correct Answer: B

Rationale: The correct answer is to use a soft-bristle toothbrush to prevent gum irritation in clients undergoing radiation therapy for laryngeal cancer. Radiation therapy can cause oral mucositis and increase the risk of gum irritation, so using a soft-bristle toothbrush is recommended to minimize trauma to the gums and oral mucosa. Applying heat to the neck is contraindicated as it can exacerbate tissue damage caused by radiation. Rinsing the mouth with an alcohol-free mouthwash is preferred over an alcohol-based one to prevent drying and irritation of the oral mucosa. Wearing loose-fitting clothing is advised to prevent friction and irritation on the skin, rather than tight-fitting clothing that may cause pressure ulcers or skin breakdown.

Correct Answer: A

Rationale: The correct instruction for using a peak flow meter is to place the mouthpiece in your mouth and blow out as quickly as you can. This action helps measure the peak expiratory flow of the client. Choice B is incorrect because exhaling slowly does not provide an accurate peak flow reading. Choice C is incorrect as taking a slow deep breath before blowing interferes with obtaining an accurate measurement. Choice D is incorrect as blowing at a steady rate for 3 seconds may not reflect the peak expiratory flow accurately.

Correct Answer: D

Rationale: The correct answer is D because clients taking spironolactone should have their potassium levels checked regularly. Spironolactone is a potassium-sparing diuretic, meaning it helps the body retain potassium and can lead to hyperkalemia if levels become too high. Choices A, B, and C are incorrect because avoiding foods high in potassium, sodium, or monitoring blood pressure are not specific to the teaching related to spironolactone.

Correct Answer: D

Rationale: The correct statement to include in the teaching about PCA is that the client can adjust the amount of pain medication they receive by pushing on the keypad. This empowers the client to control their pain management effectively. Choice A is incorrect because PCA systems are programmed to prevent double dosing when the button is pressed multiple times in quick succession. Choice B is incorrect as continuous PCA infusion aims to maintain a steady plasma medication level. Choice C is incorrect because it is not necessary to push the button before physical activity to ensure maximum pain control; the client should use the PCA as needed for pain relief.