Low blood pressure myocardial ischemia mainly has symptoms such as chest tightness, pain in the precordial area, lower blood pressure or fainting. 1. Chest tightness: patients with myocardial ischemia may experience chest tightness during physical labor, full meal, cold, or drinking alcohol. 2. Anterior heart pain: patients with myocardial ischemia may experience discomfort behind the sternum or in the anterior region of the heart when they are overworked or stressed, which may be characterized as boring pain or tightness-like pain, sometimes radiating to the left shoulder or the left upper arm, and the pain may be relieved by itself after resting. 3. Decrease in blood pressure or fainting: Myocardial ischemia may cause a decrease in blood supply to the cardiovascular system, which may lead to fainting when blood pressure drops. Myocardial ischemia will cause more unfavorable effects on the body, if there is any abnormality, please go to the hospital in time to avoid serious consequences.