Final answer:
Nitroglycerin typically leads to decreased chest pain and decreased blood pressure due to its vasodilating effects, but it does not usually cause reduced heart rate or increased blood pressure.
Step-by-step explanation:
The common side effect of nitroglycerin administration is decreased chest pain. Nitroglycerin is a medication used to treat conditions that generally involve angina-chest pains or discomfort due to inadequate blood supply to the heart muscle. When administered, it acts as a vasodilator by releasing nitric oxide, leading to the relaxation of smooth muscle in coronary vessels. Consequently, there's an increase in blood flow and a reduction in chest pain. Moreover, nitroglycerin can also lead to decreased blood pressure due to its vasodilating effects. Contrary to decreasing blood pressure, it does not typically cause reduced heart rate or elevated blood pressure.