Missed diagnoses in general practice are inevitable. No diagnostic test or clinical decision rule in general practice is 100% sensitive. This is largely because individuals, both children and adults, present at different stages in the evolution of their illness. At an early stage classic ‘red-flag’ features of serious illness may be absent; for example, half the cases of meningococcal disease in children are missed by GPs at first presentation often because the characteristic features of the illness are yet to appear.1 Similarly at first presentation, the serious complications of an usually uncomplicated illness may not have developed; for example, dehydration in gastroenteritis or sub-dural haematoma after head injury. Safety-netting is a diagnostic strategy to deal with this situation. The term ‘safety-netting’ was introduced to general practice by Roger Neighbour who considered it a core component of the general practice consultation.2 He defined safety-netting as encompassing three questions:
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机译：一般实践中漏诊是不可避免的。在一般实践中，没有诊断测试或临床决策规则是100％敏感的。这主要是因为儿童和成人都处于疾病发展的不同阶段。在早期阶段，可能没有典型的严重疾病的“危险信号”。例如，在初次就诊时，全科医生错过了儿童脑膜炎球菌病的一半病例，这通常是因为该病的特征尚未出现。1同样，在初次就诊时，通常未出现复杂疾病的严重并发症可能尚未发展;例如，颅脑损伤后胃肠炎或硬脑膜下血肿脱水。安全网是一种处理这种情况的诊断策略。 Roger Neighbor将“安全网”一词引入普通实践，他认为这是全科医生咨询的核心组成部分。2他将安全网定义为包含三个问题：
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