Which response best connects the pathology of myasthenia gravis with its signs and symptoms (S&S)?
A sudden, explosive, disorderly charge of neurons causes a transient aberration in brain function
Loss of the myelin sheath surrounding peripheral nerves causes asymmetric weakness
Destruction of acetylcholine receptors causes muscle weakness with prolonged activity.
A bacterial inflammatory illness that causes headache and photophobia.
The Correct Answer is C
A. A sudden, explosive, disorderly charge of neurons causes a transient aberration in brain function: This describes the pathophysiology of seizures, not myasthenia gravis.
B. Loss of the myelin sheath surrounding peripheral nerves causes asymmetric weakness: This describes multiple sclerosis, not myasthenia gravis.
C. Destruction of acetylcholine receptors causes muscle weakness with prolonged activity: Myasthenia gravis is an autoimmune disease where antibodies attack acetylcholine receptors at the neuromuscular junction, leading to muscle weakness, especially after repeated use.
D. A bacterial inflammatory illness that causes headache and photophobia: This describes meningitis, not myasthenia gravis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
26. A patient is admitted to the emergency department (ED) following an overdose of acetaminophen (Tylenol) and is diagnosed with cirrhosis. Which laboratory finding is consistent with the diagnosis?
- elevated serum protein hyperproteinemia
- decreased serum liver enzymes (ALT).
- elevated number of platelets thrombocytosis)
- decreased level of clotting factors.
Correct answer:
A. Elevated serum protein hyperproteinemia: In cirrhosis, serum protein levels, particularly albumin, are often decreased due to impaired liver synthesis.
B. Decreased serum liver enzymes (ALT): In cirrhosis, liver enzyme levels such as ALT (alanine aminotransferase) are typically elevated due to liver damage and inflammation.
C. Elevated number of platelets (thrombocytosis): Cirrhosis often leads to thrombocytopenia (decreased platelet count) due to splenomegaly and decreased production of thrombopoietin.
D. Decreased level of clotting factors: The liver synthesizes most clotting factors, and in cirrhosis, the production of these factors is impaired, leading to decreased levels and increased bleeding risk.
Correct Answer is B
Explanation
A. "You have irreparably damaged your liver, there is no available treatment at this time.": Hepatitis A is usually a self-limiting illness with full recovery, and the liver often heals completely.
B. "A vaccine could have prevented this illness but a full recovery typically occurs with HAV.”: Hepatitis A can be prevented by vaccination, and most people recover fully without lasting liver damage.
C. "You likely came in contact with HAV-infected blood to have contracted this disease.": Hepatitis A is transmitted primarily through the fecal-oral route, not through blood contact.
D. "Expect to feel better in about a month but expect to have the symptoms for life.": While symptoms can last for several weeks to months, they do not persist for life in hepatitis A infections.
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