Lethal Cap and "teach-back" method

今天看到外科教育的"show-me"，一时无法理解，就搜了下，找到一个病例，如下：
A 9-month-old child was seen by her pediatrician for a fever and decreased appetite. She was found to have otitis media and was prescribed amoxicillin. The doctor gave the first dose to the infant in the office, demonstrating step-by-step how to deliver the medicine via syringe.

At home, the father drew up the next dose without removing the syringe cap. He gave the dose to the child who suddenly had difficulty breathing and collapsed. When emergency medical services (EMS) arrived, the child was intubated and transported to a children's hospital. Despite intubation, she could not be adequately ventilated. The tube was removed and intubation was tried again, still without improvement. The infant was then taken to the operating room to undergo bronchoscopy. The syringe cap was found lodged in her trachea. Evaluation in the subsequent days revealed brain death. The infant was removed from life support and died shortly thereafter.

这是一个悲剧，涉及一处方法："teach-back" method (also known as the "show-me" approach or "closing the loop" )

otitis：[әu'taitis]n. 耳炎
amoxicillin：阿莫西林；羟氨苄青霉素
syringe：['sirindʒ]n. 注射器
intubation：n. 插管