IRCT201507042730N8 IRCT 2016-04-10 Vice chancellor for research,Baqiyatallah University of Medical Sciences survey the effect of overcrowding management on patient safety based on stabilization model in the emergency department survey the effect of overcrowding management on patient safety based on stabilization model in the emergency department 2015-09-23 anticipated 70 Complete https://irct.ir/trial/2574 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Health service research. 2-3 Emergency department. Intervention 1: 1. Reduce the number of patients who needed their presence in the entourage is (are patients with good general condition, not bed rest, loss of consciousness, they are prone to falling out of bed, not elderly), after coordination with the head section emergency police Brigade emergency department, it was noted that only patients who carry the rest of the entourage of the emergency exit. 2. One of the inputs and outputs of the emergency department for better control of entry and exit, after coordination with Police Brigade emergency department, emergency department, all entrances except the main entrance was blocked. 3. The Czech case by a nurse every two hours, it was fully explained in the training of nurses 4. temporary place to stay patients discharged to their beds during the registration process is usable for other clients. 5. Follow the discharge of patients (patient discharge records in the computer system immediately after discharge and faster patient discharge process before noon) 6-training nurses to patient safety, patient safety had been brought to safety in the questionnaire Nursing staff were trained by researchers and educational pamphlets were distributed between them. 6- to training patient safety for nurses. Intervention 2: In the control group (group before the intervention) routinely was measured patient safety to valid and reliable checklist.