What clinical manifestation distinguishes or separates neurogenic shock from other forms of shock?
Hypotension
Change in mental status
Bradycardia
Warm, edematous skin
The Correct Answer is C
Choice A reason:
Hypotension, or low blood pressure, is a common feature in all types of shock, including hypovolemic, cardiogenic, and septic shock. It is not specific to neurogenic shock and therefore does not help in distinguishing it from other forms of shock.
Choice B reason:
A change in mental status, such as confusion or decreased consciousness, can occur in many types of shock due to decreased cerebral perfusion. This symptom is not unique to neurogenic shock and can be seen in hypovolemic, cardiogenic, and septic shock as well.
Choice C reason:
Bradycardia, or a slow heart rate, is a hallmark of neurogenic shock. This occurs due to disruption of the sympathetic nervous system, which normally maintains a higher heart rate through sympathetic stimulation. In neurogenic shock, the loss of sympathetic tone leads to unopposed parasympathetic activity, resulting in bradycardia. This is in contrast to other forms of shock, which typically present with tachycardia.
Choice D reason:
Warm, edematous skin is not typically associated with neurogenic shock. This symptom may be more relevant in septic shock, where widespread vasodilation can lead to warm skin. However, it is not specific enough to distinguish neurogenic shock from other types of shock.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Cyanosis. Cyanosis, or a bluish tint to the skin, indicates significant hypoxemia or poor oxygenation. While it can occur in severe anaphylaxis, it is not a primary integumentary manifestation.
Choice B reason: Urticaria. Urticaria, or hives, is a common integumentary manifestation of anaphylactic shock. It appears as raised, red, itchy welts on the skin due to an allergic reaction.
Choice C reason: Petechiae. Petechiae are small, pinpoint hemorrhages under the skin and are not typically associated with anaphylactic shock. They are more related to conditions involving bleeding or clotting disorders.
Choice D reason: Ecchymosis. Ecchymosis, or bruising, is not a characteristic manifestation of anaphylactic shock. It is more related to trauma or bleeding disorders.
Correct Answer is A
Explanation
Choice A reason:
In a state of shock, the body prioritizes blood flow to vital organs such as the myocardium (heart muscle) and the brain. This is because these organs are essential for survival, and their function is critical. The body's compensatory mechanisms ensure that blood is diverted to these areas to maintain their perfusion, even at the expense of less vital organs.
Choice B reason:
The pulmonary vasculature, which involves the blood vessels of the lungs, is important for gas exchange but is not specifically prioritized in the same way that the myocardium and brain are during shock. While maintaining adequate oxygenation is crucial, the body’s immediate focus is on sustaining the heart and brain.
Choice C reason:
The small and large bowel are not considered high-priority organs during shock. Blood flow to the gastrointestinal tract can be reduced to preserve perfusion to more vital organs. This reduced blood flow can result in decreased bowel activity and hypoactive bowel sounds.
Choice D reason:
While the hepatic (liver) and renal (kidneys) vasculature are important for detoxification and fluid balance, they are not prioritized over the heart and brain during shock. Reduced perfusion to these organs can lead to liver and kidney dysfunction, but the immediate priority is ensuring the survival of the heart and brain.
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