Your patient is receiving magnesium sulfate for neuroprotection and preterm labor at 1 gram/hour. The most concerning vital sign below is:

Choice A: Applying warm, moist soaks to the client's lower legs is not an effective intervention, as it can increase the swelling and the discomfort of the legs and interfere with the healing of the incision. The nurse should avoid applying heat to the legs and use compression stockings or pneumatic devices insteaD.

Choice B: Having the client ambulate frequently in the hallway is an effective intervention, as it can improve the blood circulation and prevent the formation of blood clots in the legs. The nurse should encourage the client to ambulate as soon as possible after the surgery and assist the client with the first ambulation.

Choice C: Keeping the client on bed rest is not an appropriate intervention, as it can increase the stasis and the coagulation of the blood and increase the risk of thrombophlebitis. The nurse should avoid prolonged bed rest and promote early mobilization of the client.

Choice D: Placing pillows under the client's knees while she is resting in bed is not an appropriate intervention, as it can impair the venous return and increase the pressure and the inflammation of the legs. The nurse should avoid placing anything under the client's knees and keep the legs slightly elevated and in a straight position.