Final answer:
The therapeutic level of aminophylline generally ranges from 10-20 µg/mL. This range ensures effectiveness for antispasmodic treatment while minimizing the risk of toxicity. Individual patient factors can affect this range, making blood test monitoring essential.
Step-by-step explanation:
The therapeutic level of aminophylline, which is a bronchodilator used for treating airway spasms such as those found in asthma or chronic obstructive pulmonary disease (COPD), typically falls within the range of 10-20 µg/mL (micrograms per milliliter). This range is considered to be effective for anti-spasmatic effects without causing significant toxicity. However, factors such as age, smoking status, and concurrent use of other medications may influence the ideal therapeutic range for an individual. It's important for the medication to be closely monitored with blood tests to maintain therapeutic levels and prevent toxicity.