<prompt> Dancing carotid is seen in:ThyrotoxicosisHypothyroidismAV FistulaBlow out carotid  <response>: Ans. a ThyrotoxicosisRef: Bailey and Love Page 756 26th edition Most common manifest of Toxicosis - Sinus Tachycardia Order of appearance of arrhythmias - Multiple Extrasystoles followed by Paroxysmal atrial tachycardia followed by Paroxysmal Atrial Fibrillation and Persistent Atrial Fibrillation not responding to Digoxin. Means - Lerman Scratch - Systolic scratch sound heard in 2nd Intercostal Space during expiration Dancing carotids due to hyperdynamic circulation seen in - Aortic regurgitation and Thyrotoxicosis 