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Pharmacology · Portal hypertension: octreotide
Sample itemIn acute variceal haemorrhage, octreotide is infused. What is its main haemodynamic effect?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
C. Splanchnic vasoconstriction lowering portal inflow
Octreotide inhibits release of vasodilator hormones such as glucagon and causes splanchnic vasoconstriction, reducing portal pressure. It is also used in carcinoid syndrome and acromegaly.
Option by option
A. Direct lowering of intravariceal wall tension
Its action is not on wall tension directly.
B. Systemic vasodilation
Vasodilation would worsen bleeding.
C. Splanchnic vasoconstriction lowering portal inflow (correct)
Correct. Reduced splanchnic inflow lowers portal pressure.
D. Increase in cardiac output
It does not primarily raise cardiac output.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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