<unk>  is a reenterant arrhythmia, with<unk>  rates between 240 and 340/min, with a regular ventricular response and a saw tooth pattern on EKG. While it occurs mostly in patients with structural heart disease, it may also occur in patients with normal heart. It presents with palpitations, dyspnea, fatigue, lightheadedness etc. A typical flutter rhythm on EKG consists of absent P waves, saw tooth pattern in leads II, III and aVF, an<unk>  rate of 240-340 beats/min and an<unk>  rate:ventricular rate ratio 2:1 (most commonly). The treatment consists of rate control, anticoagulation therapy and cardioversion if the flutter is well tolerated. In those with poorly tolerated flutter or hemodynamic instability direct DC cardioversion is attempted, followed by rate control therapy.
Atrial flutter
Ventricular flutter
Sinus arrhythmia
Wide complex tachycardia
Lone atrial fibrillation
Narrow complex tachycardia
Fascicular VT
Atrioventricular dissociation