Norepinephrine Flashcards
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Questions and Answers

What is the generic or trade name for Norepinephrine?

  • Adrenaline
  • Levophed (correct)
  • Epinephrine
  • Dopamine
  • What is the classification of Norepinephrine?

    Sympathomimetic / Sympathetic agonist / Catecholamine

    Describe the primary mechanism of action of Norepinephrine.

    Primary a1 agonist --> second messenger release of Ca2+ in VSMC --> peripheral vasoconstriction --> increased SVR --> increased BP

    What is the secondary mechanism of action of Norepinephrine?

    <p>B1 agonist --&gt; increased intracellular Ca2+ in cardiac cells --&gt; + inotropy, dromotropy, chronotropy</p> Signup and view all the answers

    What are the pharmacokinetics of Norepinephrine regarding onset?

    <p>Not provided</p> Signup and view all the answers

    Study Notes

    Norepinephrine Overview

    • Norepinephrine is also known by its trade name, Levophed.
    • Classified as a sympathomimetic drug, sympathetic agonist, and catecholamine.

    Mechanism of Action

    • Acts primarily as an alpha-1 (α1) agonist, leading to increased calcium ion (Ca2+) release in vascular smooth muscle cells (VSMC).
    • Results in peripheral vasoconstriction, which elevates systemic vascular resistance (SVR) and blood pressure (BP).
    • Functions secondarily as a beta-1 (β1) agonist, enhancing intracellular calcium levels in cardiac cells.
    • This secondary action promotes increased myocardial contractility (positive inotropy), conduction velocity (positive dromotropy), and heart rate (positive chronotropy).

    Pharmacokinetics

    • Norepinephrine has an onset of action that needs to be detailed further, as the specific timings were not provided.

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    Test your knowledge of norepinephrine with these flashcards. Each card covers essential information including its generic name, classification, and mechanism of action. Perfect for students and professionals in pharmacology or related fields.

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