ocr: Resi dent and Staff Physi ci. an Patient Education Chart Arrhythmias: Atrial Fibrillation wwhwnl - - - * - A a - * o - Atria have no coordinated contractions - C e * Many stimuli produce twiching, which appears as small, irregular waves Reprinted with permissionifomResident and: Staff Physician (c)1991-92, 19931 by Romaine Pierson Publishers, Inc.