Correct Answer: A

Rationale: The main components of a comprehensive discharge plan for a patient with heart failure include advising on appropriate physical activity and exercise to improve cardiovascular health and overall well-being. While fluid restriction and dietary recommendations are important aspects of heart failure management, advising on physical activity and exercise is crucial for improving cardiac function and quality of life post-discharge. Medication management is also essential but focusing on physical activity is particularly relevant for long-term management and preventing readmissions.

Correct Answer: B

Rationale: Covering the tracheostomy when outside is crucial as it helps prevent dust and other irritants from entering the airway, reducing the risk of complications. Cleaning with alcohol (choice A) can be too harsh for the skin around the tracheostomy site. While replacing the tube weekly (choice C) is important, it is typically done by healthcare providers. Using tap water to clean (choice D) is not recommended as it may introduce contaminants to the tracheostomy site.

Correct Answer: C

Rationale: The correct answer is C because white rice is a low-fiber food suitable for a low-fiber diet, making it an appropriate choice. Choices A, B, and D are incorrect because fresh pear, refried beans, and bran cereal are high-fiber foods and not suitable for a low-fiber diet.

Correct Answer: B

Rationale: The correct answer is to inject enoxaparin subcutaneously at a 45-degree angle. This angle helps ensure proper delivery of the medication into the subcutaneous tissue. Option A (Inject at a 90-degree angle) is incorrect because subcutaneous injections are usually given at a shallower angle. Option C (Massage the injection site after administering) is incorrect as massaging the site can cause bruising and should generally be avoided. Option D (Use a longer needle) is incorrect as using a longer needle is unnecessary and may increase the risk of injecting the medication too deeply.

Correct Answer: B

Rationale: The correct answer is B: Driving a car. Driving a car can be physically and emotionally taxing, increasing the risk of complications soon after a myocardial infarction. It requires quick reflexes and decision-making abilities, which may be impaired during the recovery period. Swimming in a pool, light housework, and walking on flat ground are generally safe and beneficial activities for clients following a myocardial infarction as they promote circulation, muscle strength, and overall well-being.