Mistake-proofing is an improvement technology that uses a device or procedure, also called a poka-yoke, to prevent defects or errors during a process. Mistakeproofing in healthcare can improve the quality of patient care and services; correct conditions in the process that allow for errors or mistakes; support ideas from knowledgeable staff to improve a process or area; and reduce costs to the organization by eliminating duplication of work. This user-friendly book introduces the concepts of Zero Quality Control (ZQC) and Poka-Yoke Systems. Using healthcare examples, this practical text explains the concept of mistake-proofing through the use of margin assists, key terms, and how-to-steps.