A nurse is reinforcing teaching with a client who needs to increase vitamin C intake to promote wound healing. Which of the following foods should the nurse recommend as the best source of vitamin C?

Choice A reason: Tightening the abdominal muscles is a good strategy to prevent back injury when lifting an object. The abdominal muscles support the spine and help maintain a neutral posture. Tightening them can reduce the stress on the back and prevent muscle strain or disc herniation.

Choice B reason: Bending at the waist is a bad strategy to prevent back injury when lifting an object. Bending at the waist can cause the spine to curve and lose its alignment. This can increase the pressure on the intervertebral discs and the spinal nerves, and lead to pain, inflammation, or nerve damage.

Choice C reason: Keeping legs straight is a bad strategy to prevent back injury when lifting an object. Keeping legs straight can limit the range of motion and the leverage of the lower body. This can force the back to do most of the work and increase the risk of injury. The nurse should bend the knees and hips and use the legs to lift the object.

Choice D reason: Holding the object away from the body is a bad strategy to prevent back injury when lifting an object. Holding the object away from the body can create a lever effect and increase the load on the back. This can cause the back muscles to overwork and fatigue, and lead to injury. The nurse should hold the object close to the body and keep it at the center of gravity.

Choice A reason: A weight-sensitive sensor mat is a device that alerts the staff when a client tries to get out of bed. It is not a safety hazard, but rather a safety measure to prevent falls.

Choice B reason: A buzzing sensation at the application site of a transcutaneous electrical nerve stimulation unit is normal and expected. It indicates that the unit is delivering electrical impulses to the nerves and muscles. It is not a safety hazard, but rather a therapeutic intervention for pain relief.

Choice C reason: A capillary refill of less than 2 seconds is normal and indicates adequate blood circulation. It is not a safety hazard, but rather a sign of good perfusion.

Choice D reason: Raising all four side rails of a client's bed is a safety hazard because it increases the risk of injury if the client tries to climb over them. It also restricts the client's mobility and may cause feelings of isolation and imprisonment. It is a violation of the client's rights and dignity.