Complex sentence: Despite the potential cardiac problems the condition is rarely fatal and generally lasts less than a day, medical intervention is not often needed but sometimes atropine therapy, vasopressors and other agents are used to mitigate symptoms.
Split into simpler sentences: Despite the potential cardiac problems the condition is rarely fatal and generally lasts less than a day. Medical intervention is not often needed but sometimes atropine therapy, vasopressors and other agents are used to mitigate symptoms.