The toxic effect of Beta receptor antagonists includes all the following EXCEPT____________?
Correct answer: D. Precipitate migrainic effect
- A. Hypoglycemic episodes in diabetes
- B. Worsening of preexisting asthma
- C. Ischemic cardiac episode on abrupt discontinuation
- D. Precipitate migrainic effect
Explanation
Abrupt beta-blocker withdrawal can precipitate angina or myocardial ischaemia, and beta-blockers can worsen asthma and mask hypoglycaemia. They are generally used to prevent migraine, so precipitating a migrainic effect is the exception.
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