Which of the following is TRUE of Guillain-Barre syndrome?...

Which of the following is TRUE of Guillain-Barre syndrome?
(A) The only danger of death is from respiratory failure.
(B) It is more common in HIV-infected patients.
(C) In classic cases, sensation on exam is usually abnormal.
(D) It is easily distinguished from Lyme disease.

Key Concepts

Guillain-Barre Syndrome

Guillain-Barre Syndrome (GBS) is an acute immune-mediated polyneuropathy characterized by rapid-onset muscle weakness and often a progressive, ascending paralysis. It is considered a post-infectious disorder in which the body's immune system mistakenly attacks peripheral nerves, leading to demyelination and, in some cases, axonal degeneration.

Respiratory Failure

Respiratory failure is a major complication of GBS arising from the weakness of the respiratory muscles. This can lead to life-threatening breathing difficulties and is a primary reason for admission to intensive care units, underscoring the importance of timely respiratory support in managing severe cases.

Association with Infections

GBS is typically preceded by an infectious illness, and various pathogens—including those causing gastrointestinal and respiratory infections—have been implicated as triggers. In particular, infections such as Campylobacter jejuni and, in some cases, viral infections like HIV are known to be associated with the onset of GBS, reflecting the immune-mediated mechanism underlying the syndrome.

Sensory Examination Findings

In classic presentations of GBS, motor deficits predominate while sensory examinations are often relatively preserved or only mildly affected. Although patients may experience some sensory symptoms like numbness or paresthesias, these are less prominent compared to the profound motor weakness and paralysis that characterize the condition.

Differential Diagnosis in Neurology

Differentiating GBS from other neurologic conditions is critical because several other disorders can present with similar neuromuscular symptoms. A thorough clinical evaluation, including history, physical examination, electrophysiological studies, and cerebrospinal fluid analysis, is essential in distinguishing GBS from other causes of acute neuromuscular weakness.

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