A nurse is caring for a client who is receiving a continuous heparin infusion. Which of the following laboratory tests should the nurse review prior to adjusting the client's heparin?

- A. Incorrect. The nurse should check the functioning of oxygen equipment daily, not weekly, to ensure safety and proper delivery of oxygen.

- B. Correct. The nurse should instruct the client to wear clothing made with cotton fabrics while oxygen is in use, as synthetic fabrics can generate static electricity and cause sparks that could ignite the oxygen.

- C. Incorrect. The nurse should instruct the client to avoid petroleum-based lubricants, such as Vaseline, as they are flammable and could cause burns if exposed to oxygen. The nurse should recommend water-soluble lubricants, such as K-Y jelly, instead.

- D. Incorrect. The nurse should instruct the client to store full oxygen tanks upright, not on their side, to prevent them from rolling and damaging the valve or regulator.

Choice A rationale:

Repositioning the NG tube is not the appropriate action for hyperosmolar dehydration. This condition occurs due to an excessive concentration of solutes in the body, leading to a decrease in intracellular water. Repositioning the tube would not address the hyperosmolarity issue.

Choice B rationale:

Increasing the rate of formula delivery may exacerbate the problem by introducing more concentrated formula into the client's system, worsening hyperosmolarity. This choice can lead to further dehydration and electrolyte imbalances.

Choice C rationale:

Adding water to the formula is the correct action in this scenario. Hyperosmolar dehydration requires dilution of the concentrated formula to reduce the osmolarity. By adding water to the formula, the nurse can decrease the concentration of solutes, helping to rehydrate the client effectively.

Choice D rationale:

Switching to a lactose-free formula is not the appropriate intervention for hyperosmolar dehydration. The issue lies in the concentration of the formula, not in its lactose content. Adding water is the more suitable and direct approach to address the problem.