ATRIAL FLUTTER ËÅѡࡳ±ì¡ÒÃÇÔ¹Ô¨©Ñ R-R interval is usually regular (may be irregular in the presence of AV block) QRS rate is usually increased (may be normal or decreased in the presence of AV block) "Sawtooth" configuration of flutter waves Atrial rate is 250-500/min (usually 300/min) ¡ÒÃÇÔ¹Ô¨©ÑÂá¡âä Sinue tachycardia Supraventricular tachycardia Atrial fibrillation