老年性心肌梗死的首发症状往往是不典型的,临床上常以下述几种形式出现:1、无痛性心肌梗死型这是老年人心肌梗死的重要特征,包括无典型的刺痛、隐痛、钝痛、灼痛、闷痛等任何形式的胸痛;无左肩、左臂及背痛等明显心梗症状。2、心功能不全型当老年人突发不明原因的呼吸困难、胸闷、气喘、心悸等,老年心梗特点 The first symptom of senile myocardial infarction is often atypical, clinically often in the following forms: 1, painless myocardial infarction This is an important feature of elderly myocardial infarction, including no typical tingling, pain, Dull pain, burning pain, tenderness and other forms of chest pain; no left shoulder, left arm and back pain and other obvious symptoms of myocardial infarction. 2, cardiac insufficiency When the elderly sudden unexplained respiratory difficulties, chest tightness, asthma, heart palpitations, etc., elderly myocardial infarction characteristics