Primary cardiac tumors can mimic many other cardiac conditions and may cause obstruction to blood flow, heart failure, chest pain, syncope, pulmonary hypertension, and arrhythmias.
While fainting after exercise, a condition called syncope, can indicate a serious heart disorder, most cases are linked to low blood pressure and low blood flow to the brain.
运动后出现晕厥提示可能存在严重的心脏疾病，绝大部分病例是由于低血压及大脑低灌注所致。
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Syncope: Effect of temporary impairment of blood circulation to a part of the body.