Paper I
2016 October (Supplementary) (2010 Scheme) · 40 marks · 120 min

Question

Carvedilol

Q33 marksShort Notes

Answer

Carvedilol is a non-selective beta blocker with additional α1-blocking activity.

Mechanism of action

  • Blocks β1 and β2 receptors (reducing heart rate, contractility, renin release) and also blocks α1 receptors (causing vasodilatation, reducing afterload)
  • Also has antioxidant properties

Uses

  • Chronic heart failure (improves survival — one of the evidence-based beta-blockers for CHF)
  • Hypertension
  • Angina pectoris

Adverse effects

  • Postural hypotension (α-blockade)
  • Bradycardia, fatigue
  • Bronchospasm (non-selective β-blockade — caution in asthma/COPD)
  • Worsening of acute decompensated heart failure if not carefully titrated

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