The client is taking a class IB anti-arrhythmic drug. What drug might that be?

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.

Correct Answer: B

Rationale: The correct answer is B: Monitor the IV site for extravasation. This is crucial because heparin is an anticoagulant medication that can cause bleeding if not administered properly. Monitoring the IV site helps prevent potential complications such as bleeding, hematoma, or tissue damage. Other choices are incorrect: A: Providing antacids for digestive upset is not a priority when a client is on heparin. C: Monitoring signs of acute blood loss is important, but the immediate concern is preventing complications related to heparin administration. D: Monitoring the respiratory rate is not directly related to heparin therapy and is not a priority intervention in this case.

Correct Answer: C

Rationale: The correct answer is C: Heparin. Aspirin and Heparin can interact and increase the risk of bleeding due to their combined antiplatelet effects. This interaction can lead to serious complications in the client. Cimetidine (A) is not typically known to interact significantly with aspirin. Prednisone (B) is a corticosteroid and does not have a significant interaction with aspirin in terms of drug-drug reactions. Amoxicillin (D) is an antibiotic and is not known to interact significantly with aspirin in a drug-drug reaction scenario. In conclusion, the correct choice (C) stands out due to its potential for a significant adverse outcome when combined with aspirin.

Correct Answer: B

Rationale: The correct answer is B: To reduce total and LDL cholesterol. Statin medications are primarily used to lower cholesterol levels, specifically total cholesterol and LDL cholesterol, to reduce the risk of cardiovascular events. This is achieved by inhibiting an enzyme involved in cholesterol synthesis. Incorrect answers: A: Thinning blood is the function of anticoagulants, not statins. C: Statins do not break up plaques in the arteries; they prevent further plaque buildup. D: Statins do not destabilize cholesterol plaques; they primarily focus on lowering cholesterol levels.

Correct Answer: A

Rationale: The correct answer is A: The sino-atrial node. The SA node is the natural pacemaker of the heart, responsible for initiating the electrical impulses that regulate the heartbeat. A resting heart rate of 80 with a regular rhythm indicates normal sinus rhythm, which is typically driven by the SA node. The SA node is located in the right atrium and generates electrical impulses that spread through the atria, causing them to contract. Choice B (The atrio-ventricular node) is incorrect because the AV node serves to delay the electrical impulse to allow the atria to contract before the ventricles. Choice C (The Purkinje fibers) is incorrect as they are responsible for rapid conduction of the electrical impulse to the ventricles. Choice D (The bundle of HIS) is incorrect as it is part of the electrical conduction system that transmits the impulse from the AV node to the bundle branches.