The lower part of the bed can be raised or lowered independently, allowing for elevation of the legs or knees. This feature is useful for improving circulation, reducing swelling, and providing comfort.Trendelenburg and Reverse Trendelenburg positions Some electric hospital beds offer the ability to tilt the entire bed frame to a specific angle. The Trendelenburg position involves tilting the bed with the head lower than the feet, while the Reverse Trendelenburg position is the opposite. These positions are commonly used for surgical procedures or to help with certain medical conditions.