Correct Answer: C

Rationale: In the case of a client diagnosed with cardiomyopathy and experiencing tachycardia, a beta blocker is the anticipated medication. Beta blockers work by blocking the effects of adrenaline on the heart, reducing heart rate, blood pressure, and myocardial oxygen demand. This can help manage symptoms of tachycardia in cardiomyopathy by slowing down the heart rate and improving its overall function. Other medications like ACE inhibitors and angiotensin II receptor blockers may be used to manage specific aspects of cardiomyopathy such as hypertension or heart failure, but in the context of tachycardia, a beta blocker is the preferred choice. Cardiac glycosides, like Digoxin, are used for heart failure but not primarily for managing tachycardia in cardiomyopathy.

Correct Answer: A

Rationale: A. Excessive sweating: Children with congestive heart failure (CHF) may experience excessive sweating as their bodies work harder to keep up with the demands of the heart, leading to increased sympathetic tone and perspiration.

Correct Answer: C

Rationale: Monitoring serum electrolyte levels would be the most appropriate action for a client admitted with a cardiac dysrhythmia. Electrolyte imbalances, particularly potassium and magnesium, can lead to cardiac dysrhythmias. Therefore, it is crucial to monitor and maintain proper electrolyte levels to prevent or manage dysrhythmias. Restricting fluids, encouraging bedrest, or instructing in a low-fat diet are not the priority actions for managing a cardiac dysrhythmia.

Correct Answer: A

Rationale: The best response is "Your risk of continued coronary artery disease will decrease by half when you stop." This response provides a specific and concrete benefit of quitting smoking for the client with a history of myocardial infarction. By explaining that quitting smoking can reduce the risk of continued coronary artery disease by half, the nurse is providing motivation and encouragement for the client to make a positive change in their lifestyle. This information is factual and can help the client understand the immediate benefits of quitting smoking in relation to their current health condition.

Correct Answer: B

Rationale: Scoliosis is a condition characterized by an abnormal lateral curvature of the spine, often forming an S-shaped or C-shaped curve when viewed from behind. It commonly occurs in young adults during growth spurts, especially teenage girls. Scoliosis can be mild or severe, and early detection is crucial to prevent further progression and potential complications. Treatment options may include physical therapy, bracing, or in more severe cases, surgery. Lordosis is an inward curvature of the lower back, Kyphosis is an excessive outward curvature of the spine commonly known as "hunchback," and Musculosis is not a recognized medical term related to spinal conditions.