A nurse in the emergency department admits a male client who has experienced severe frostbite to his hands and toes after becoming lost on a ski hill. The nurse recognizes that which of the following phenomena has contributed to his tissue damage?
A)
Decreased blood viscosity has resulted in interstitial bleeding.
B)
Reactive vasodilation has compromised perfusion.
C)
Autonomic nervous stimulation has resulted in injury.
D)
Decreased blood flow has induced hypoxia.
Ans:
D
Feedback:
Damage from exposure to cold results from hypoxia, ice crystal formation, and vasoconstriction. Blood viscosity increases, not decreases, and vasoconstriction occurs rather than vasodilation.
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