Metoprolol

Question 1

Trade name

Answer 1

Lopressor

Question 2

Class

Answer 2

Selective Beta(1)-Blocker (class II antiaarrhythmic)

Question 3

Indications

Answer 3

1. Myocardial infarction
2. SVT
3. A-Fib or A-Flutter
4. Hypertension
5. Thyrotoxicosis

Question 4

Containidications

Answer 4

1. Hypotension
2. Bradycardia
3. CHF
4. Concurrent use with calcium channel blockers
5. Use with caution in the setting of bronchospastic disease

Question 5

Dosing for MI

Answer 5

5 mg IV/IO bolus every 5 minutes as tolerated up to a total of 3 doses, titration to heart rate and blood pressure

Question 6

Dosing for SVT (off label use)

Answer 6

2.5 - 5 mg IV blows over 2 min (may repeat in 10 minutes up to a total of 3 doses)

Question 7

Dosing for A-Fib/Flutter (off label use)

Answer 7

2.5 - 5 mg IV bolus, may repeat every 2-5 min as needed (max dose: 15 mg over 10-15 min)

Question 8

Onset

Answer 8

10 - 30 seconds, peak effect in 20 minutes

Question 9

Duration

Answer 9

6 hours