An ambulance cot support arrangement (10) which utilizes an elongate guide track (18, 19) configured for mounting to a floor surface of a cargo area on the ambulance. A trolley (22) is supported for movement relative to the guide track and has an elongate boom (16). The ambulance cot (80) has a powered collapsible and extendable base and a patient support deck mounted on the base. A connection mechanism (36-39) is provided on the trolley and the ambulance cot (80) which is configured to interconnect and securely hold the ambulance cot on the trolley.
