What condition would prompt a nurse to question a prescription for sildenafil (Viagra)?

The correct choice involves a critical contraindication related to the use of sildenafil, which is prescribed primarily for erectile dysfunction. Sildenafil works by relaxing blood vessels and increasing blood flow to specific areas of the body, particularly the penis. However, when used in conjunction with nitroglycerin, a medication commonly prescribed for angina and other heart conditions, this combination poses a serious risk.

Nitroglycerin causes vasodilation and lowers blood pressure. When taken along with sildenafil, the combined effects can lead to a dangerous drop in blood pressure, potentially resulting in severe cardiovascular complications such as syncope (fainting), heart attack, or stroke. Therefore, assessing the patient's medication history for the use of nitroglycerin is vital before processing a prescription for sildenafil.

Other conditions mentioned, like neuralgia, insomnia, or the use of multivitamins, do not have a direct contraindication with sildenafil. While these conditions may require other considerations regarding patient care or symptom management, they do not generally necessitate questioning the prescription for sildenafil. Understanding the significance of medication interactions is crucial in ensuring patient safety and effective treatment outcomes.