Question
Which of the following conditions is not a contraindication for the use of beta-blockers?
| A. |
Asthma
|
| B. |
Hypotension
|
| C. |
Bradycardia
|
| D. |
Hypothyroidism
|
Show Answer
|
Correct Answer » D
Explanation
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|
Hypothyroidism is *not* a contraindication to beta-blocker use; in fact, beta-blockers often treat symptoms of hyperthyroidism.
– Beta-blockers manage symptoms such as tachycardia and tremors even if hypothyroidism is present or developing.
Beta-blockers Mechanism: Block beta-1 & beta-2 adrenergic receptors → ↓ heart rate & contractility; ↓ renin release.
– Major Contraindications: Asthma (bronchospasm risk), severe bradycardia, hypotension, advanced heart block.
– Hypothyroidism: Not a contraindication; often used for symptom control in hyperthyroidism.
– Asthma & COPD: Use cardioselective beta-blockers cautiously; avoid non-selective beta-blockers.
– Clinical Pearls: Check heart rate and blood pressure prior to beta-blocker initiation; monitor for adverse effects.
