A patient support includes a height adjustable patient support deck, at least one guard structure mounted for movement relative to the patient support deck, and a latch operable to lock the position of the guard structure in a raised position. The patient support further includes a CPR release operable to lower the head deck section of the patient support deck to place the patient support in an emergency state and further operable to release the latch to allow the guard rail structure to lower or be lowered from the raised position.