ocr: Resi dent and Staff Physi ci. an Patient Education Chart Normal Electrocardiogram - * A - 4 - à * * d : - - d * - : n I L S P wave originates in the atria * QRS wave originates in the ventricles Reprinted with permissionifomResident and: Staff Physician (c)1991-92, 19931 by Romaine Pierson Publishers, Inc.
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