Disorders of the Autonomic Nervous System

Question 1

Patients with a length-dependent neuropathy may present with… ?

Answer 1

Distal anhidrosis,but the primary complaint is proximal hyperhidrosis that occurs to maintain thermoregulation.

Question 2

How is Orthostatic Hypotension defined ?

Answer 2

A sustained drop in systolic (>20 mmHg) or diastolic (>10 mmHg) BP after 3 min of standing.

Question 3

What percentage of patients with severe Guilain-Barre syndrome suffer fatal cardiovascular collapse ?

Answer 3

Between 2 and 10%

Question 4

Which antibodies present in approximately half of patients with Autoimmune Autonomic Ganglionopathy ?

Answer 4

Autoantibodies against the α3 subunit of the ganglionic Ach receptor

Question 5

Most common cause of autonomic storm ?

Answer 5

Brain injury (typically follows severe head trauma and postresuscitation anoxic-ischemic brain injury.