A nurse is assessing a client who has started taking theophylline. Which of the following client findings should indicate to the nurse that the medication is effective?

A. Decreased urine output. This finding is not an indicator of theophylline effectiveness. Theophylline is used to treat respiratory conditions, and its effectiveness is measured by improvements in respiratory symptoms. B. Increased blood pressure. This finding is not an indicator of theophylline effectiveness. Theophylline is used to treat respiratory conditions, and its effectiveness is measured by improvements in respiratory symptoms. C. Increased level of consciousness. This finding is not an indicator of theophylline effectiveness. Theophylline is used to treat respiratory conditions, and its effectiveness is measured by improvements in respiratory symptoms. D. Decreased wheezing. This finding is an indicator of theophylline effectiveness. Theophylline is a bronchodilator used to treat asthma and other respiratory conditions. A decrease in wheezing indicates that the medication is effectively improving the client’s airway function.