Metoprolol

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Author:
Ritameeker
ID:
203251
Filename:
Metoprolol
Updated:
2013-02-25 11:43:26
Tags:
Paramedic Drug Beta Blocker antiarrythmic Lopressor
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Description:
Paramedic Drug Quiz prep - Metoprolol
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  1. Metoprolol

    Also known as:
    Lopressor
  2. Metoprolol

    Class:
    • Selective Beta Blocker
    • (class II antiarrythmic)
  3. Metoprolol

    Mechanism of Action:
    Reduction in heart rate, systolic BP, and cardiac output due to selective effects on Beta1 adrenergic receptors.  Appears to inhibit tacycardia, especially following an MI.
  4. Metoprolol

    Onset of Action:
    Immediate (IV)
  5. Metoprolol

    Peak Effect:
    20 minutes (IV)
  6. Metoprolol

    Duration:
    5 - 8 hours
  7. Metoprolol

    Half-Life:
    3 - 4 hours
  8. Metoprolol

    Indications:
    * Suspected or definate acute MI who are also hypertensive and do not have any contraindications.

    * Stable, narrow-complex tachycardia if rhythm remains uncontrolled or unconverted by adeosine or vagel maneuvers o if SVT is recurrent.

    * Control ventricular rate in Pt's with A-fib or A-flutter.

    * Cretain forms of polymorphic VT (assoc with acute ischemia, familial Long QT Syndrome, catecholaminergic)


  9. Metoprolol

    Contraindications:
    • * HR <45 bpm
    • * Systolic BP <100 mmHg
    • * Heart block
    • * Bradycardia
    • * Shock
    • * Hx of asthma
  10. Metoprolol

    Precautions:
    * BP, pulse, ECG must be constantly monitored.

    * Atropine and transcutaneous pacing should be available.
  11. Metoprolol

    Side Effects:
    • * bradycardia
    • * hypotension
    • * lethargy
    • * dyspnea
    • * wheezing
    • * weakness
    • * heart block
    • * CHF
    • * depression
    • * bronchospasm
  12. Metoprolol

    Adult Dosage:
    Initial bolus of 5mg by slow IV injection.  If vitals remain stable, a second 5mg bolus should be given 2 - 5 minutes after the first.  If the first two doses are well tolerated,a third bolus of 5mg should be administered 2 - 5 minutes after the second dose.
  13. Metoprolol

    Pedi Dose:
    Not indicated
  14. Metoprolol

    Max Dose:
    15mg
  15. Metoprolol

    Routes of Administration:
    Slow IV bolus injection
  16. Metoprolol

    How Supplied:
    Unknown

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