Correct Answer: A

Rationale: The correct answer is A: Heart rate. Before administering digoxin, it is crucial to check the client's heart rate because digoxin can cause bradycardia, making it essential to ensure the heart rate is within the appropriate range. Blood pressure, respiratory rate, and oxygen saturation are also important parameters to monitor in a clinical setting, but when administering digoxin, the focus should primarily be on the heart rate due to its potential effects on cardiac function.

Correct Answer: A

Rationale: Correct! Clopidogrel (Plavix) is an antiplatelet medication that helps prevent blood clots. As a side effect, it can increase the risk of bleeding. Monitoring for signs of bleeding, such as easy bruising, blood in urine or stools, or prolonged bleeding from cuts, is crucial.

Choices B, C, and D are incorrect as hypertension, tachycardia, and bradycardia are not typically associated with clopidogrel use.

Correct Answer: A

Rationale: Pericarditis is the correct answer because it is the inflammation of the pericardium, the outer lining of the heart. This condition commonly presents with symptoms like chest pain. Endocarditis (choice
B) is the inflammation of the inner lining of the heart chambers and valves. Myocarditis (choice
C) is the inflammation of the heart muscle itself. Valvular heart disease (choice
D) refers to various conditions affecting the heart valves, not specifically the outer lining of the heart.

Correct Answer: B

Rationale: The correct answer is to hold the digoxin and notify the healthcare provider. A potassium level of 3.0 mEq/L indicates hypokalemia, which can increase the risk of digoxin toxicity. Digoxin and low potassium levels can lead to serious cardiac arrhythmias. Administering a potassium supplement (choice
A) without healthcare provider guidance can worsen the situation. Continuing the current digoxin dose (choice
C) can further increase the risk of toxicity. Administering Digibind (choice
D) is used in severe cases of digoxin toxicity, not for addressing low potassium levels.

Correct Answer: A

Rationale: The correct answer is the Pulmonary valve. The Pulmonary valve prevents backflow of blood into the right ventricle from the pulmonary artery after it has been ejected. The Aortic valve (choice
B) prevents backflow from the aorta into the left ventricle. The Tricuspid valve (choice
C) prevents backflow of blood into the right atrium from the right ventricle. The Mitral valve (choice
D) prevents backflow from the left ventricle into the left atrium.