Ask the nurse to explain the type of angina he is experiencing.
The nurse explains the pain is due to the imbalance of myocardial supply.

Choice A rationale

The rebound effect is typically associated with decongestants rather than topical nasal steroids. It occurs when nasal congestion worsens after stopping decongestant use.

Choice B rationale

Local ulceration is a potential adverse reaction to topical nasal steroids due to the localized irritation and thinning of the nasal mucosa with prolonged use.

Choice C rationale

Increased nasal drainage is not a common adverse reaction to topical nasal steroids. These medications typically reduce inflammation and decrease nasal drainage.

Choice D rationale

Suppression of healing is not an adverse reaction associated with topical nasal steroids. These drugs are more likely to reduce inflammation and promote healing of the nasal mucosa.

Choice A rationale

True. Xanthine derivatives like theophylline can cause serious adverse effects, including brain damage, when blood levels become too high. It is critical to monitor theophylline levels to prevent toxicity and associated neurological complications.

Choice B rationale

False. If xanthine levels remain within therapeutic ranges, the risk of brain damage is minimized. However, this statement is incorrect as it does not acknowledge the potential severity of the adverse effects linked to elevated theophylline levels.