Which of the following is a potential side effect of nitroglycerin?

Nitroglycerin is a medication commonly used to relieve angina and improve blood flow by dilating blood vessels. One potential side effect of nitroglycerin is a severe headache. This occurs because the dilation of blood vessels not only affects coronary arteries but can also lead to the dilation of vessels in the brain, causing increased intracranial pressure and resultant headache. Patients often report this side effect soon after taking the medication.

The presence of these headaches can sometimes be significant enough for patients to feel discomfort or need to use over-the-counter pain relief. It's important for EMTs and healthcare providers to be aware of this side effect, as it can help them manage patient expectations and monitor for further complications associated with nitroglycerin administration.

Different side effects are observed with other options presented. Increased blood pressure and enhanced cognitive function are not typical reactions to nitroglycerin; rather, the medication typically results in lower blood pressures due to its vasodilatory effects. Bradycardia is also not isolated in response to nitroglycerin as it primarily affects vascular tone, so this side effect does not align with the pharmacological profile of the medication. Understanding these nuances helps in the effective use of nitroglycerin in clinical settings.