LPN Pharmacology

Correct Answer: B

Rationale: ST-segment depression can indicate hypokalemia, affecting the heart's electrical conduction. Hypokalemia leads to alterations in the repolarization phase of the cardiac action potential, resulting in ST-segment depression on the ECG.

Correct Answer: A

Rationale: An exercise electrocardiography (ECG) test is used to evaluate the heart's response to physical stress. During the test, the heart's electrical activity is monitored while the client exercises, helping to identify any areas of ischemia or abnormal rhythms. This test helps healthcare providers assess the heart's function and detect any potential issues related to angina or other cardiac conditions.

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: Pericardial friction rub is a distinctive sign of pericarditis, characterized by a scraping or grating sound heard on auscultation, which helps differentiate pericarditis from other cardiopulmonary conditions. Anterior chest pain may be present in various cardiopulmonary issues. Weakness and irritability are nonspecific symptoms, and chest pain worsening with inspiration is more indicative of pleuritic conditions.

Correct Answer: A

Rationale: Caffeine should be avoided before a dipyridamole thallium scan as it can interfere with the test results. Caffeine is a stimulant that can affect the heart rate and may lead to inaccurate findings during the scan. Therefore, it is essential for the LPN/LVN to check and ensure that the client has not consumed caffeine prior to the procedure to obtain accurate diagnostic results.