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← Human Body & HealthAfter starting norepinephrine infusion following severe sepsis, which consequence results from increased downstream arteriolar constriction?
A)Increased blood pressure above baseline
B)Decreased glomerular filtration rate✓
C)Increased local tissue perfusion
D)Decreased systemic vascular resistance
💡 Explanation
When norepinephrine constricts arterioles, increased vascular resistance results in decreased blood flow to the kidneys and glomerular filtration rate because of reduced hydrostatic pressure. This phenomenon occurs rather than augmenting tissue perfusion at nephrons; therefore kidney cells are exposed to less arterial blood.
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