ATI Learning System PN Medical Surgical Final Quizlet

Correct Answer: B

Rationale: Spironolactone is a potassium-sparing diuretic commonly used in patients with heart failure. The nurse should monitor for signs of hyperkalemia, which is a potential side effect of spironolactone therapy. Hyperkalemia can lead to serious cardiac arrhythmias, so close monitoring of potassium levels is essential to prevent complications.

Correct Answer: C

Rationale: The primary reason for administering morphine to a patient with a myocardial infarction (MI) is to reduce cardiac workload. Morphine helps in reducing preload and afterload, which ultimately improves oxygenation to the heart muscle. By decreasing the workload on the heart, morphine can alleviate symptoms and decrease the strain on the heart muscle during an MI.

Correct Answer: B

Rationale: The primary action of short-acting beta2-agonists (SABAs) is to relieve bronchospasm. These medications are bronchodilators that work by opening the airways, making breathing easier for patients experiencing asthma exacerbations. By relieving bronchospasm, SABAs help improve airflow and alleviate symptoms of asthma such as wheezing and shortness of breath.

Correct Answer: C

Rationale: It is crucial for patients undergoing external beam radiation therapy to avoid exposing the treated area to sunlight as it can lead to further skin damage. Heat sources like heating pads should be avoided to prevent potential burns. Alcohol-based lotions can irritate the skin, so they should not be used. Washing the treated area with lukewarm water and mild soap is recommended to maintain skin integrity and prevent irritation.

Correct Answer: B

Rationale: The partial thromboplastin time (PTT) is the laboratory test that should be monitored to evaluate the effectiveness of heparin therapy in patients with deep vein thrombosis (DVT). Heparin affects the intrinsic pathway of the coagulation cascade, which is reflected by changes in the PTT. Monitoring the PTT helps ensure that the patient's blood is within the desired therapeutic range and prevents complications related to clotting or bleeding.