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17 November, 19:29

A woman reports a racing heart that began while she was playing softball 2 hours ago. Her ECG shows a rapid and regular heart rate, and she is given an intravenous bolus of a drug that activates G protein-coupled receptors. Which drug mechanism may lead to termination of the arrhythmia?

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Answers (2)
  1. 17 November, 19:38
    0
    Answer: increase reflux of potassium

    Explanation:

    The woman possibly has supraventricular tachycardia which may precipitate by a premature atrial deplorization. Adenosine is administered to her which will bind and activate the G-protein coupled receptor that has adenosine binding site. This activation leads to the efflux of potassium and the hyperpolarization of supraventricular tissue.
  2. 17 November, 19:41
    0
    The drug type used in this case should be beta blocker drug who has G protein as transduction unit where beta 1 or beta 2 adrenergic receptor is blocked.
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