Inotropic Drugs

Question 1

Inotropic drugs

Answer 1

drugs that increase the force of myocardial contraction

Question 2

digoxin is a?

Answer 2

cardiac glycoside

Question 3

Inotropic drugs affect?

Answer 3

the force of muscular contraction

Question 4

positive inotropic drugs?

Answer 4

increase the force of contraction (digoxin)

Question 5

negative inotropic drugs?

Answer 5

decrease the force of contraction (beta blockers)

Question 6

chronotropic drugs effect?

Answer 6

the rate of the heartbeat

Question 7

positive chronotropic drugs

Answer 7

increase the heart rate

Question 8

Negative chronotropic drugs

Answer 8

decrease heart rate (digoxin)

Question 9

Dromotropic drugs affect?

Answer 9

the conduction speed of electrical impulses

Question 10

negative dromotropic drugs?

Answer 10

slow down the conduction speed (digoxin)

Question 11

3 S’s of digoxin?

Answer 11

1. Strengthens contraction
2. Slows hear rate at SA node
3. Slows conduction speed at AV node

Question 12

digoxin can promote

Answer 12

diuresis due to increased kidney perfusion

Question 13

digoxin has a?

Answer 13

narrow therapeutic index (window)

Question 14

What can increase digoxin toxicity?

Answer 14

low potassium levels

Question 15

what are the earlier signs of digoxin toxicity?

Answer 15

anorexia, nausea, vomiting and diarrhea

Question 16

what are the later signs of digoxin toxicity?

Answer 16

coloured vision (especially seeing yellow), flickering or halos

Question 17

What is the most serious averse effect of digoxin?

Answer 17

dysrhythmias (including bradycardia)

Question 18

Which pulse must the nurse check on a person taking digoxin?

Answer 18

apical!

Question 19

What is the minimum pulse rate in a person taking digoxin?

Answer 19

60 beats per minute

Question 20

What is the antidote for digoxin toxicity?

Answer 20

digoxin immune Fab therapy

Question 21

Patients taking digoxin should avoid eating?

Answer 21

high fibre foods because they may decrease the absorption of digoxin

Question 22

which serum labs should be monitored in a pt taking digoxin?

Answer 22

potassium and renal function

Question 23

hold dose of digoxin if the HR is ______ in an infant?

Answer 23

less than 90 bpm

Question 24

slow heart rate in a person taking digoxin could be a sign of?

Answer 24

toxicity

Question 25

average adult dose of digoxin?

Answer 25

0.125mg/day to 0.5mg/day

Question 26

indications of phosphodiesterase inhibitors (mirinone)

Answer 26

short term management of heart failure

Question 27

What are to signs of therapeutic effects?

Answer 27

increased urinary output and decreased crackles in lungs