Nitroglycerin has a very important role in the treatment of coronary heart disease and angina pectoris, which can effectively dilate the coronary arteries and increase the blood supply to the heart muscle, and the following matters need to be noted in the process of its use: First, special attention should be paid to the contraindications of nitroglycerin, such as acute myocardial infarction or severe heart failure in the late stage with hypotension, because nitroglycerin has a hypotensive effect, nitroglycerin should not be used, otherwise it will cause If you are suffering from glaucoma or allergic to nitroglycerin, you should also pay attention not to use it. Secondly, when using nitroglycerin intravenously, attention should be paid to avoid light, nitroglycerin is easily decomposed when it sees light and is very volatile. Use a brown syringe to pump it in or protect it from light on the outside of the infusion bag to prevent the decomposition of nitroglycerin.