How risky is a stress echocardiogram can you die from one ? as heart rate is speeded up fast...

Echocardiogram: I think you are confusing stress test (which is egg done while your heart is sped up by exercise or medicine) which can reveal that you have a heart at risk for attack (the location should have the emergency equipment available - ask if you don't see it). An echocardiogram uses ultrasound like a fish - finder to see inside your heart while it is working without pain or damage.