The client is experiencing a drug-drug reaction by taking aspirin with what other drug?

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: 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.

Correct Answer: B

Rationale: The correct answer is B: Premature atrial contractions. This is because the client's heart rate is normal (70) and the P wave is coming early and malformed, indicating an early atrial depolarization. This is characteristic of premature atrial contractions, where an ectopic focus in the atria causes an early impulse. The other choices are incorrect because in a normal sinus rhythm (A), the P wave would be normal and not early or malformed. Frequent PVCs (C) would show wide and bizarre QRS complexes, not a malformed P wave. A ventricular escape rhythm (D) would have a slower heart rate and a different pattern of electrical activity.

Correct Answer: D

Rationale: The correct answer is D because the client should record the time of any palpable events, such as palpitations, during the Holter Monitor test to correlate symptoms with the recorded heart rhythm. This information helps healthcare providers make an accurate diagnosis. Choice A is incorrect as the client can go about their usual activities during the test. Choice B is incorrect as the client can bathe normally while wearing the Holter monitor. Choice C is incorrect as the test typically lasts for 24 to 48 hours, not just 30 minutes.

Correct Answer: C

Rationale: The correct answer is C: decrease coronary artery spasms. Diltiazem is a calcium channel blocker that helps to relax and dilate coronary arteries, reducing the frequency and severity of coronary artery spasms in Prinzmetal's angina. This action improves blood flow to the heart muscle, relieving chest pain. A: reduce heart palpitations - Diltiazem may cause bradycardia (slow heart rate) but is not primarily used to reduce heart palpitations. B: prevent coronary artery plaque - Diltiazem does not prevent the formation of coronary artery plaque. D: increase contractile force of the heart - Diltiazem actually decreases the contractile force of the heart by reducing cardiac workload and oxygen demand.