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 is correct because delegating non-nursing tasks to ancillary staff allows nurses to focus on more complex and skilled tasks that require their expertise and judgment, thus improving efficiency and quality of care.

- B is incorrect because stocking client rooms with extra supplies increases waste and costs, as well as clutter and infection risk.

- C is incorrect because assigning dedicated equipment to each client's room reduces availability and accessibility of equipment for other clients, as well as increases maintenance and cleaning costs.

- D is incorrect because changing continuous IV infusion tubing every 24 hr is not cost-effective, as it does not reduce the risk of infection significantly compared to changing it every 72 hr, according to current evidence-based practice guidelines.

a. Improves muscle strength.

Explanation:

Neostigmine is a medication used in the treatment of myasthenia gravis (MG). It belongs to a class of drugs called cholinesterase inhibitors. Neostigmine works by inhibiting the breakdown of acetylcholine, a neurotransmiter involved in muscle contraction. In MG, there is a decrease in the amount of acetylcholine available at the neuromuscular junction, leading to muscle weakness and fatigue.

By inhibiting the breakdown of acetylcholine, neostigmine helps to increase the concentration of acetylcholine at the neuromuscular junction. This, in turn, improves muscle strength and can alleviate the symptoms of weakness and fatigue associated with MG.

Option b, destroying the antibodies that cause MG, is not accurate. Myasthenia gravis is an autoimmune disorder characterized by the presence of antibodies that interfere with neuromuscular transmission.

Neostigmine does not directly target or eliminate these antibodies.

Option c, enhancing immune system function, is not accurate either. Neostigmine primarily acts on the neuromuscular junction to improve muscle strength and does not have a direct effect on immune system function.

Option d, preventing excessive coughing, is not the primary action of neostigmine. While increased muscle strength may indirectly improve respiratory function and reduce coughing in individuals with myasthenia gravis, it is not the primary indication or action of neostigmine.

Therefore, the most accurate information to include in teaching about neostigmine for a client with myasthenia gravis is that it improves muscle strength.