stress test electrocardiogram: atrial tachycardia 1:1 conduction at rest
stress test electrocardiogram: atrial tachycardia 1:1 conduction at rest
stress test electrocardiogram: atrial tachycardia 1:1 conduction at rest (procedure)
stress test electrocardiogram: atrial tachycardia 1:1 conduction at rest (procedure)