LPN Pharmacology

Correct Answer: B

Rationale: Atrial fibrillation is characterized by an irregular and often rapid heart rate, which can lead to poor blood flow due to ineffective contractions of the atria.

Correct Answer: C

Rationale: The correct answer is C. Using polyunsaturated oils, such as vegetable oils, can help manage cholesterol levels and reduce the risk of heart disease. This dietary change is beneficial for individuals with coronary artery disease as it promotes heart health by improving cholesterol profiles. Substituting eggs and milk for meat (Choice A) may not address the overall dietary needs for managing the condition. Completely eliminating all cholesterol and fat from the diet (Choice B) is not necessary as the body needs some healthy fats. Considering becoming a strict vegetarian (Choice D) is a personal choice and may not necessarily be required to manage coronary artery disease.

Correct Answer: C

Rationale: Gingival bleeding is a common side effect of anticoagulant therapy. Anticoagulants work by prolonging the time it takes for blood to clot, which can lead to bleeding issues, including gingival bleeding. Since bleeding, including gingival bleeding, can be a serious side effect that requires medical attention, the client should be educated on reporting it promptly to their healthcare provider.

Correct Answer: B

Rationale: When assessing a client with a history of left-sided heart failure, the presence of bilateral lung crackles is a key finding to determine if the condition is currently active. Crackles in the lungs indicate fluid accumulation, a common sign of left-sided heart failure due to pulmonary congestion.

Correct Answer: A

Rationale: In hyperkalemia, tall, peaked T waves are a distinct ECG finding. These T waves can be seen as a result of increased serum potassium levels, affecting the repolarization phase of the cardiac action potential. It is crucial for healthcare providers to recognize this ECG change promptly as hyperkalemia can lead to serious cardiac arrhythmias and complications.