A toddler requires supplemental oxygen therapy for a cyanotic heart defect. In planning for home care, the nurse would discuss which of the following with the parents?

Correct Answer: B

Rationale: The correct answer is B because promoting mobility while meeting the need for supplemental oxygen is crucial for the toddler's overall well-being. This helps prevent complications such as pneumonia and promotes physical development. Maintaining the child on bedrest (A) is not recommended as it can lead to muscle weakness and other health issues. Discussing symptoms of oxygen toxicity (C) is important but not the priority in this scenario. Drawing blood for blood gases (D) should be performed by healthcare professionals, not parents.

Correct Answer: A

Rationale: The correct answer is A. In the early stages of dehydration, the body tries to conserve water, leading to sunken eyeballs due to decreased fluid volume and poor skin turgor as skin loses its elasticity. Thirst or confusion (choice B) occur in moderate dehydration. Increased heart rate with hypotension (choice C) is a sign of severe dehydration. Coma or seizures (choice D) are extreme manifestations of dehydration and do not typically occur in the early stages.

Correct Answer: C

Rationale: The correct answer is C: Hydrochlorothiazide decreases potassium, increasing the risk of digoxin toxicity. Rationale: 1. Hydrochlorothiazide is a diuretic that can cause potassium loss. 2. Digoxin is a medication that requires adequate potassium levels for proper function. 3. Low potassium levels can potentiate the toxicity of digoxin, leading to adverse effects. Summary: A: Incorrect, hydrochlorothiazide does not increase digoxin levels. B: Incorrect, hydrochlorothiazide's potassium-lowering effect can increase digoxin toxicity. D: Incorrect, digoxin does not affect the effectiveness of hydrochlorothiazide.

Correct Answer: C

Rationale: The correct answer is C because a client with asthma would benefit from a cardio-selective beta blocker since it has less effect on beta-2 receptors in the lungs, thus reducing the risk of bronchoconstriction. Choice A is incorrect because beta blockers do not cause blockage in blood vessels. Choice B is incorrect as hypotension is not a reason for cardio-selective beta blockers. Choice D is incorrect as hypoglycemia is not typically worsened by non-cardio-selective beta blockers.

Correct Answer: B

Rationale: Step-by-step rationale: 1. Class IB anti-arrhythmic drugs work by blocking sodium channels. 2. Procainamide is a Class IB anti-arrhythmic drug. 3. Lidocaine (A) is a Class IB anti-arrhythmic drug but more commonly used for acute arrhythmias. 4. Mexiletine (C) is a Class IB anti-arrhythmic drug but less commonly used. 5. Metoprolol (D) is a beta-blocker (Class II) used for other cardiac conditions. In summary, Procainamide is the correct choice as it belongs to the Class IB anti-arrhythmic drugs, while the other options are either less common in this class or belong to different drug classes.