Which condition is considered a contraindication for use of beta-adrenergic agonists?

Which condition is considered a contraindication for use of beta-adrenergic agonists?

• A. Hypertension
• B. Tachydysrhythmias
• C. Hypotension
• D. Hyperglycemia

Answer: (B)

Beta-adrenergic agonists stimulate receptors that increase heart rate, conduction, and contractility. This can push the heart into faster, more active rhythms. If a patient already has a tachydysrhythmia, adding a drug that speeds the heart further can worsen the rhythm and raise the risk of instability, so it's contraindicated. Hypertension or hypotension aren’t absolute contraindications—they’re conditions that can be affected by these drugs, and they may still be used with caution in some situations. Hyperglycemia is a metabolic effect, not a direct contraindication.

Beta-adrenergic agonists stimulate receptors that increase heart rate, conduction, and contractility. This can push the heart into faster, more active rhythms. If a patient already has a tachydysrhythmia, adding a drug that speeds the heart further can worsen the rhythm and raise the risk of instability, so it's contraindicated.

Hypertension or hypotension aren’t absolute contraindications—they’re conditions that can be affected by these drugs, and they may still be used with caution in some situations. Hyperglycemia is a metabolic effect, not a direct contraindication.