Tachy-brady syndrome

Episodes of tachy-brady syndrome, atrial flutter, atrial fibrillation, SA block, or sinus arrest... 

Otherwise know as Brady-tachy syndrome features alternating periods of tachycardia and bradycardia on the same ECG (Fig. 7.16). Atrial fibrillation or flutter may also be seen on the ECG causing the tachycardia. The bradycardia is caused by sinus pauses or periods of sinus arrest. 

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