LPN Pharmacology Practice Questions

Correct Answer: B

Rationale: Prothrombin time (PT) and international normalized ratio (INR) are the laboratory values used to monitor the effectiveness of warfarin therapy. These values help ensure that the client is within the therapeutic range for anticoagulation. PT measures the time it takes for blood to clot, while INR standardizes PT results to minimize variations between laboratories. Monitoring these values is crucial to prevent complications such as bleeding or clot formation. Activated partial thromboplastin time (aPTT) (Choice A) is more commonly used to monitor heparin therapy. Platelet count (Choice C) assesses the number of platelets in the blood and is not specific to warfarin therapy. Erythrocyte sedimentation rate (ESR) (Choice D) is a non-specific marker of inflammation and is not used to monitor the effectiveness of warfarin therapy.

Correct Answer: A

Rationale: Administering oxygen is the priority action for a client experiencing restlessness, agitation, and an increased respiratory rate after a myocardial infarction (MI). This intervention helps ensure adequate oxygenation, improve cardiac function, and reduce the workload on the heart. Oxygen therapy takes precedence over administering medications like morphine sulfate or notifying the healthcare provider as it addresses the immediate need for oxygenation. Checking the blood pressure is also important but not as urgent as ensuring proper oxygen supply.

Correct Answer: A

Rationale: Corrected Rationale: When taking docusate sodium, it is important to take the medication with a full glass of water to help ensure its proper effectiveness. This helps prevent the stool from hardening and makes it easier to pass, especially for individuals experiencing constipation. Choice B is incorrect because there is no specific instruction to take docusate sodium at bedtime. Choice C is incorrect because docusate sodium does not need to be taken on an empty stomach. Choice D is incorrect because there is no need to avoid taking docusate sodium with antacids.

Correct Answer: B

Rationale: In this scenario, the client is exhibiting signs of pulmonary edema, which can occur as a complication of myocardial infarction. Crackles are typically heard in cases of pulmonary edema, characterized by fluid accumulation in the lungs. These crackling sounds are heard during inspiration and sometimes expiration and are an indication of fluid-filled alveoli. Therefore, when assessing the client with these symptoms, the nurse would expect to hear crackles bilaterally. Rhonchi, which are coarse rattling respiratory sounds, are typically associated with conditions like bronchitis or pneumonia, not pulmonary edema. Wheezes are high-pitched musical sounds heard in conditions like asthma or COPD, not commonly present in pulmonary edema. Diminished breath sounds suggest decreased airflow or lung consolidation, not typical findings in pulmonary edema.

Correct Answer: C

Rationale: The most important laboratory value to monitor regularly in clients receiving total parenteral nutrition (TPN) is glucose. TPN solutions contain high concentrations of glucose, which can lead to hyperglycemia. Monitoring glucose levels is crucial to detect and prevent hyperglycemia, a common complication associated with TPN administration. Albumin (Choice A) levels are not typically affected by TPN administration. Calcium (Choice B) and alkaline phosphatase (Choice D) are not directly impacted by TPN and are not the primary values to monitor in TPN therapy.