Introduction: Inter-hospital transport constitutes one of the important parts of the emergency system in every country.

Materials and methods: To determine the outcome of requested CCU beds from the medical emergency headquarters in year 2000 by the hospitals affiliated to Tehran university of medical sciences, we have reviewed retrospectively 2688 clinical files of patients for whom a request for an empty CCU bed in other hospitals had been sent to the medical emergency headquarters. The main measure was the success rate of being admitted to CCU in other hospitals.

Results: On the whole 68.5 percent of requests were followed by a CCU admission to other hospitals. Using logistic regression method, variables including season of the year, shift diagnosis of the patient and the original hospital were shown to be related with the success rate. Conclusion: Increasing the number of available CCU beds and providing the centers with the necessary equipment is of high priority in hospitals located in city of Tehran.