A nurse is providing discharge instructions to a client who has asthma and is about to start taking theophylline (Theo-24). The nurse should tell the client that this medication might cause which of the following adverse effects?

Theophylline is a bronchodilator medication used in the treatment of asthma and other respiratory conditions. It works by relaxing the smooth muscles in the airways, allowing for easier breathing. However, theophylline is associated with potential adverse effects, and one of the most significant concerns is its potential to cause dysrhythmias (irregular heart rhythms).

Dysrhythmias can include tachycardia (rapid heart rate), atrial fibrillation, or other disturbances in heart rhythm.

Constipation is not a commonly reported adverse effect of theophylline. Oliguria (decreased urine output) is not typically associated with theophylline use. Drowsiness can occur with theophylline, but dysrhythmias are considered a more significant and potentially serious adverse effect. It is crucial for the nurse to educate the client about the potential for dysrhythmias and advise them to report any irregular heartbeat or other cardiac symptoms promptly.

When using an albuterol inhaler, it is important for the client to take a slow and deep inhalation while releasing the medication from the inhaler. After inhaling the medication, holding the breath for about 10 seconds allows the medication to reach deep into the airways and maximize its effectiveness.

The other actions mentioned are not correct:
A. Waiting 10 minutes between inhalations: Albuterol inhalers are typically used as a quick-relief medication for acute symptoms, and waiting 10 minutes between inhalations may not provide immediate relief when needed. The specific instructions on the frequency of inhalations should be provided by the healthcare provider.

B. Taking a quick inhalation while releasing the medication from the inhaler: It is important to take a slow and deep inhalation while releasing the medication to ensure that the medication reaches the lungs effectively. Taking a quick inhalation may result in less effective delivery of the medication.

D. Exhaling as the medication is released from the inhaler: It is important to exhale fully before using the inhaler to ensure that the medication is inhaled deeply into the lungs. Exhaling while releasing the medication can interfere with the proper inhalation technique.