Basic Surgery MCQ Answer 011

Answer: C



DISCUSSION:

Neurogenic shock occurs when severe head injury, spinal cord injury, or pharmacologic sympathetic blockade leads to sympathetic denervation and loss of vasomotor tone. Both arteriolar and venous vessels dilate, causing reduced systemic vascular resistance and a great increase in venous capacitance. The patient's extremities appear warm and dry, in contrast to those of a patient in cardiogenic or hypovolemic shock. Tachycardia is frequently observed, though the classic description of neurogenic shock includes bradycardia and hypotension. Volume administration to fill the expanded intravascular compartment is the mainstay of treatment. The use of alpha-adrenergic agonist is infrequently necessary to treat neurogenic shock.

Category: Surgery MCQs