Intensive Care Cardiology Flashcards Preview

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Flashcards in Intensive Care Cardiology Deck (10)
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1

Where are alpha 1 receptors and what is their function

Arteries
Vasoconstriction

2

Where are beta 1 receptors and what is their function

Heart
Positive chronotropy and inotropy

3

Where are beta 2 receptors and what is their function

Arteries
Vasodilation

4

Vasopressin mechanism of action and effect

Arginine vasopressin receptor 1a agonist
Causes pure vasoconstriction

5

Phenylephrine mechanism of action

A1 receptor agonist
Vasoconstriction

6

Noradrenaline mechanism of action

A1, B1 and B2 receptor agonist
Net vasoconstriction
Positive inotropy and chronotropy

7

Dopamine mechanism of action

Dose dependent A1 and B1 receptor agonist. D receptor agonist.
Vasoconstriction and increased chronotropy and inotropy

8

Adrenaline mechanism of action

A1, B1 agonist and mild B2 agonist.
Net vasoconstriction
Positive inotropy and chronotropy

9

Dobutamine mechanism of action

Small A1 agonist and strong B1 and B2 receptor agonist. D receptor agonist.
Increase cardiac output, may decrease BP.

10

Isoprenaline mechanism of action

Pure B1/B2 agonist.
Positive chronotropy and inotropy with vasodilation