Positive Inotropes

Question 1

This drug category is a positive inotrope from foxglove plants, that has a very narrow safety margin and would only be used in vet medicine by extra label

Answer 1

Cardiac glycosides (digoxin)

Question 2

The catecholamine positive inotropes increase cardiac output, inotropy, chronotropy, and BP. These effects decrease cardiac _______________ bc of increased ______________ consumption

Answer 2

Efficiency
Oxygen consumption

Question 3

The inotropic catecholamines target ____________ receptors

Answer 3

Adrenergic

Question 4

Which catecholamine inotrope targets alpha and beta receptors causing bronchiole dilation, positive inotrope, and increased blood GLUCOSE

Answer 4

Epinephrine

Question 5

Which catecholamine inotrope is a norepinephrine pre cursor that targets alpha 1 and beta 1 receptors causing positive chronotropy, positive inotrope, and increased BP

Answer 5

Dopamine

Question 6

Which catecholamine inotrope targets beta 1 receptors, causing positive chronotropy and positvie inotrope

Answer 6

Dobutamine

Question 7

Vet vs human epinephrine concentrations

Answer 7

Vet: 1 mg/ mL
Human: 0.1 mg/ mL

Question 8

Anti arrhythmic drugs are divided into four classifications. Class l is a….
that decreases the propagation of impulses

Answer 8

Cell membrane stabilizer

Question 9

What are three class l (membrane stabilizers) anti arrhythmics

Answer 9

1. Lidocaine
2. Mexiletine
3. Procainamide

Question 10

Class ll anti arrhythmic drugs are ____________ _____________ and cause negative inotropy and negative chronotropy

Answer 10

Beta blockers/ antagonists