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冠心病是老年人常见的慢性疾病之一,由于病程长、无急性发作时对日常生活影响不大,胸闷胸痛发作时硝酸酯类药物通常又能有效控制病情,使很多患者认为,发作时
Coronary heart disease is one of the common chronic diseases in the elderly. Due to the long course of disease and no acute attack, it has little effect on daily life. Chest tightness and chest pain often can effectively control the condition of nitrates, making many patients think that when the attack