Which statement regarding the pathophysiology of myasthenia gravis is true?
A. The myelin sheath is destroyed by the immune system.
B. Myasthenia gravis is caused by antibodies to dopamine receptors.
C. There is evidence of both central and peripheral nervous system disease.
D. There is a defect in the transmission of nerve impulses to the skeletal muscles.
D
The major pathologic defect in myasthenia gravis is that nerve impulses are not transmitted to skeletal muscles at the neuromuscular junction.
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During the physical examination of a patient's eyes, the nurse asks the patient to follow the tracing of a giant H with the eyes. What is the nurse assessing in this patient?
A) Pupil reaction to light B) Extraocular movements C) Convergence D) Corneal light reflex
The nurse is providing a client with oxygen therapy. All of the following are hazards of this type of therapy, EXCEPT:
1. obliteration of the stimulus to breathe in clients with chronic pulmonary disease. 2. atelectasis due to decreased nitrogen. 3. decreased production of surfactant. 4. obstruction of nasal passages.
A client with peptic ulcer disease vomits undigested food after eating breakfast. The nurse notes abdominal distention. What intervention should the nurse anticipate will be imple-mented for this client?
A. Insertion of a nasogastric tube B. Insertion of a jejunostomy tube C. Administration of an antiemetic D. Administration of H2-receptor antagonists
Maria, a Spanish-speaking 5-year-old girl, has started kindergarten in an English-speaking school. Crying most of the time, she appears helpless and unable to function in this new situation. Which description best explains Maria's behavior?
a. Lacks adequate culture for attending school b. Lacks the maturity needed in school c. Is experiencing culture shock d. Is experiencing minority group discrimination