A client's wife has just learned that her husband is terminally ill. She is sitting in the corner of the client's room crying, and says to the nurse, "I feel as if I'm already so alone." Which action should the nurse take first?

Choice A reason: Muscle strength and tone is not the most important assessment for the nurse to perform prior to the application of a heating pad. It may be relevant for some clients who have musculoskeletal problems, but it does not indicate the risk of thermal injury.

Choice B reason: Limitations to range of motion is not the most important assessment for the nurse to perform prior to the application of a heating pad. It may be relevant for some clients who have joint stiffness or pain, but it does not indicate the risk of thermal injury.

Choice C reason: Presence of rebound phenomenon is not the most important assessment for the nurse to perform prior to the application of a heating pad. It is a sign of peritoneal inflammation that occurs when pressure is released from the abdomen. It has nothing to do with the application of a heating pad.

Choice D reason: Degree of neurosensory impairment is the most important assessment for the nurse to perform prior to the application of a heating pad. It indicates the client's ability to perceive heat and pain sensations. If the client has impaired neurosensory function, the nurse should avoid using a heating pad or use it with caution and frequent monitoring.

Choice A reason: Assessing the position of the mask on the client's face is not the priority action. The mask may be well-fitted, but the oxygen delivery may be compromised by the faulty connection of the flowmeter.

Choice B reason: Releasing and reinserting the flowmeter in the wall outlet is the best action as it may correct the problem of the loose or misaligned connection. The nurse should ensure that the flowmeter is securely attached and that the oxygen is flowing properly.

Choice C reason: Attaching the flowmeter to a humidification canister is not necessary for oxygen delivery per mask. Humidification is usually added for high-flow oxygen devices such as nasal cannula or face tent.

Choice D reason: Adjusting the flow rate to the prescribed liters per minute is not the appropriate action. The flow rate may be correct, but the oxygen delivery may be impaired by the hissing sound indicating a leak or obstruction.