在国外，人们把绷带涂上硝酸甘油，敷在皮肤上防备心绞痛。医生也总是习惯地告诉患者，绷带要一天到晚裹着。但最近的研究表明，长期连续使用这种涂膏绷带会减少硝酸甘油的医疗作用。美国俄克拉荷马州大学的心脏病专家撒达尼说，硝酸甘油通常能使血管壁舒张，但如果经常使用它 Abroad, people put the bandage coated with nitroglycerin, deposited on the skin to prevent angina. Doctors are also always used to telling patients that bandages should be wrapped all day long. However, recent studies show that long-term continuous use of this plaster bandage reduces the medical benefits of nitroglycerin. Sardani, a cardiologist at the University of Oklahoma in the United States, says that nitroglycerin usually relaxes the walls of the blood vessels, but if you use it often