一、前言复诊及重复病例普遍存在于各级医疗卫生部门中。由于患者多次就诊,某医院可存有该患者的几份病志(复诊病例);防疫部门也可收到同一患者的多份发病报告(重复病例)。为满足医疗、预防、统计以及科研等工作的需要,常常要将这些复诊及重复病例(统称复病例,下同)检索出来,这是病案管理中的一项重要内容。但此项工作的难度较大,随着病案(病志或疾病报告等)量的增加,以手工方式进行检索的效率将显著下降,甚至无法进行检索。近年来,随着计算机技术的普及,许多医疗卫生单位将住院病志(或病志首页)、 I. Preface The return visits and repeat cases are commonly found in medical and health departments at all levels. Because of multiple visits to the patient, a hospital may have several medical records of the patient (reviewed cases); the epidemic prevention department may also receive multiple reports of the same patient’s incidence (repeated cases). In order to meet the needs of medical treatment, prevention, statistics, and scientific research, these return and repeat cases (collectively referred to as recurrent cases, the same below) are often retrieved. This is an important part of medical record management. However, this task is more difficult. With the increase in the number of medical records (illness or disease reports, etc.), the efficiency of manual retrieval will be significantly reduced, and even the search will be impossible. In recent years, with the popularization of computer technology, many medical and health units will be hospitalized (or the home page),