略語大辞典 [Med] 5 AT atrial tachycardia 心房頻拍. 心房部に起源のある急速心拍. 通常は毎分160-190回. 心臓病.atrial tachycardia; a heart disease; characterised by regular P waves activity at a different rate, and usually with a different morphology or axis, from that seen in sinus rhythm; rapid P wave rates may be acco 丸善「略語大辞典」JLogosID : 11866566