A nurse is preparing to instill 840 mL of enteral nutrition via a client's gastrostomy tube over 24 hr using an infusion pump. The nurse should set the infusion pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)_mL/hr

A) Postoperative patients:
Antitussives may be used postoperatively to alleviate coughing, but they are not necessarily best used in this population. Postoperative patients may have different needs based on their surgical procedure and overall health status.

B) Asthma patients:
Antitussives are generally not recommended for asthma patients because they can suppress the cough reflex, which may be important for clearing mucus and irritants from the airways. Asthma patients often have productive coughs associated with bronchial inflammation and excess mucus production.

C) Patients with a dry, irritating cough:
Antitussives are most effective for patients with a dry, irritating cough, as they help suppress the cough reflex and provide relief from coughing without producing sputum.

D) COPD patients who tire easily:
While antitussives may provide symptomatic relief for some COPD patients with a dry, nonproductive cough, they are not necessarily best used in this population. COPD patients may have varied responses to antitussive therapy, and treatment decisions should be individualized based on their overall condition and symptoms."

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.