Final answer:
Repositioning every shift, using several pillows, or a floatation mattress are effective in reducing pressure on bony prominences.
Step-by-step explanation:
Out of the given options, repositioning every shift is the best way to reduce pressure on the bony prominences. Repositioning involves changing the position of the body regularly to relieve pressure on specific areas. This helps distribute the pressure evenly and reduces the risk of pressure ulcers or bedsores.
Using several pillows can also help in reducing pressure on bony prominences by providing additional cushioning and support.
Floatation mattresses are specifically designed to distribute body weight evenly, which helps in reducing pressure points. Therefore, floatation mattress is another effective option to reduce pressure on bony prominences.
Sheepskin can provide some cushioning and reduce friction, but it may not be as effective as repositioning, using pillows, or a floatation mattress.