The nurse is aware that the patients who are allergic to intravenous contrast media are usually also allergic to which of the following products?

Correct Answer: B

Rationale: Shellfish allergy is a common indicator of potential hypersensitivity to iodinated contrast media due to the shared allergen, iodine. Patients with shellfish allergies should be screened carefully before receiving contrast media. Allergies to eggs, soy, and acidic fruits are not directly related to contrast media reactions.

Correct Answer: C

Rationale: Mucositis, inflammation of the mucous membranes, is a common side effect of chemotherapy. Using alcohol-based mouthwash can exacerbate mucositis by causing further irritation and dryness. The patient should be taught to use gentle, non-alcoholic mouth rinses, such as saline or baking soda solutions, to soothe the mucosa. Ice pops, ice chips, and a soft toothbrush are appropriate measures to manage mucositis. The nurse should provide additional teaching to correct the misconception about alcohol-based mouthwash and emphasize the importance of gentle oral care.

Correct Answer: C

Rationale: Amiodarone is the drug of choice for treating severe ventricular dysrhythmias, such as those seen in patients with acute myocardial infarction. It is effective in treating both ventricular tachycardia and ventricular fibrillation. Amiodarone works by prolonging the action potential duration and refractory period in cardiac tissues, thereby helping to stabilize the heart's electrical activity. Diltiazem and Verapamil are calcium channel blockers that are not typically used for treating ventricular dysrhythmias. Adenosine is primarily used for treating supraventricular tachycardias.

Correct Answer: C

Rationale: Senna is a natural laxative commonly used to relieve constipation. Its primary mechanism of action is to stimulate the muscles in the intestines, leading to increased contractions and bowel movements. The evaluation of medication effectiveness for senna would typically focus on its ability to promote bowel movements and alleviate constipation. This would manifest as patients experiencing solid, formed bowel movements after taking senna. The options of decreased GI pain and irritation, healing of ulcers, and prevention of nausea and vomiting are not the primary expected outcomes when evaluating the effectiveness of senna as a medication for constipation.

Correct Answer: C

Rationale: Senna is a stimulant laxative commonly used to treat constipation. Its effectiveness is primarily evaluated based on the production of soft, well-formed bowel movements. Senna works by stimulating the muscles in the intestines, promoting bowel movements and easing constipation. It is not typically used for reducing GI pain and irritation, healing ulcers, or preventing nausea and vomiting. Therefore, the evaluation of medication effectiveness of senna is primarily based on achieving soft, formed bowel movements in patients with constipation.