Pharmacology and the Nursing Process Practice Exam 2025 – The Comprehensive All-in-One Guide to Master Your Exam!

The optimal therapeutic range for theophylline blood level is suggested to be between 5 to 15 mcg/mL by most prescribers because this range has been found to be effective and safe for treating respiratory conditions. Option A (10 to 20 mcg/mL) may be considered too high, leading to potential side effects such as tachycardia, while option C (20 to 30 mcg/mL) may increase the risk of toxicity. Option D (0 to 5 mcg/mL) is not a recommended range as it is below therapeutic levels and would not be effective in treating respiratory conditions.