One year, a 79-year-old patient in an internal medicine department, dyspnea at night, pneumothorax, asked for consultation, ready to perform closed drainage, disinfection, the patient suddenly stopped breathing, lips cyanosis, the department on duty to urge the leadership to quickly down the tube drainage, I hurriedly give the nasotracheal suctioning, do not care about the aseptic operation, a large amount of sputum suctioned out, respiratory recovery, a little bit stable, before the closed drainage again. Fortunately avoided a medical dispute, such as being injected anesthesia or surgery has been incision, separation, placement of tubes in or placement of closed respiratory arrest, the family will have what action, can be imagined. Due to the internal medicine, nursing treatment is not appropriate to the surgeon unintentionally dug a big deep pit, so that you are buried in it. I hope you learn from this and protect yourself.