A patient is in the clinic to have blood drawn to assess his or her theophylline level. The patient is taking theophylline (Theo-Dur) and appears to being doing well on the drug. He or she reports no problems
What serum level will the nurse expect the patient to have? A) Between 0.5 to 5 mcg/mL
B) Between 10 to 20 mcg/mL
C) Between 25 to 35 mcg/mL
D) Between 40 to 50 mcg/mL
B
Feedback:
Therapeutic theophylline levels should be between 10 and 20 mcg/mL. A level between 0.5 and 5 mcg/mL would be low and would not produce a therapeutic effect. Levels between 25 and 50 mcg/mL would be too high and could cause serious adverse effects.
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