The nurse explains the action of laxatives as doing what?

A) Is it caused by demyelination of the nerve fibers:
Myasthenia gravis is not primarily caused by demyelination of nerve fibers. It is characterized by dysfunction at the neuromuscular junction, specifically involving the acetylcholine receptors.

B) Is it thought to be an autoimmune disease:
This is correct. Myasthenia gravis is considered an autoimmune disorder in which the body's immune system mistakenly targets and attacks its own tissues, particularly the acetylcholine receptors at the neuromuscular junction.

C) It is associated with destruction of acetylcholine receptor sites:
This is correct. In myasthenia gravis, there is a reduction in the number of functional acetylcholine receptors due to autoimmune-mediated destruction or blocking of these receptors.

D) Once symptoms present, it has a 5-year survival rate:
This statement is inaccurate. Myasthenia gravis is a chronic condition, but survival rates are not determined by the onset of symptoms. With appropriate treatment, many individuals with myasthenia gravis can manage their symptoms effectively and have a normal life expectancy.

E) It is a chronic and progressive muscular disease:
This is correct. Myasthenia gravis is a chronic neuromuscular disorder characterized by fluctuating muscle weakness and fatigue. While it is chronic, it is not necessarily progressive in all cases, as symptoms may stabilize or improve with treatment.

F) Is it best treated with antibiotics:
Antibiotics are not the primary treatment for myasthenia gravis. Treatment typically involves medications that enhance neuromuscular transmission, such as acetylcholinesterase inhibitors or immunosuppressive drugs, along with other supportive measures.

A) Bicarbonate:
While bicarbonate levels may be relevant in some cases, they are not typically a primary consideration before administering furosemide. Furosemide primarily affects electrolyte balance, particularly potassium and sodium, rather than bicarbonate levels.

B) Potassium:
This is the correct answer. Before administering furosemide, it is essential to review the client's potassium levels because furosemide is a loop diuretic that can lead to potassium depletion. Monitoring potassium levels helps prevent hypokalemia, which can lead to cardiac dysrhythmias and other complications, especially in clients with heart failure.

C) Phosphate:
Phosphate levels are not typically a primary concern before administering furosemide. Furosemide primarily affects sodium and potassium levels rather than phosphate levels.

D) Carbon dioxide:
Carbon dioxide levels are not typically a primary consideration before administering furosemide. Furosemide primarily affects electrolyte balance rather than carbon dioxide levels.