A client suffering from asthma is placed on theophylline to reduce the frequency of acute attacks. Which of the following adverse effects would the nurse caution the client prior to discharge?

A) Ipratropium is the drug of choice for acute asthma exacerbations: This statement is incorrect. While ipratropium is used in the management of asthma, it is not the first-line treatment for acute exacerbations. Short-acting beta-agonists, such as albuterol, are the preferred choice for rapid relief during an acute asthma attack due to their quick onset of action.

B) Mechanism of action includes blocking acetylcholine receptors in the airway: This statement is accurate. Ipratropium is an anticholinergic agent that works by blocking acetylcholine receptors in the bronchial smooth muscle. This action leads to bronchodilation and helps to decrease mucus production, making it effective for managing airway constriction.

C) Mechanism of action includes antagonizing histamine receptors of the upper airway: This statement is incorrect. Ipratropium does not act on histamine receptors; rather, it specifically targets acetylcholine receptors. Antihistamines are the medications that block histamine receptors, primarily used for allergic reactions and rhinitis, but not for bronchodilation in asthma.

D) Client's who are allergic to soybean should avoid taking ipratropium: This statement is true. Ipratropium bromide may contain soy lecithin, which can pose a risk for patients with soybean allergies. Therefore, it is essential for healthcare providers to assess a patient’s allergy history before prescribing this medication.

E) Urinary retention is a side effect of Ipratropium bromide: This is correct. Anticholinergic medications, including ipratropium, can lead to urinary retention as a side effect due to their action of inhibiting acetylcholine, which plays a role in bladder function. Patients should be monitored for this side effect, especially if they have a history of urinary issues.

F) Ipratropium (Atrovent) is a medication for asthma and chronic obstructive pulmonary disease (COPD): This statement is accurate. Ipratropium is indicated for both asthma and COPD management, as it helps to relieve bronchospasm and improve airflow. It is often used as an adjunct therapy in combination with other bronchodilators for better management of respiratory conditions.

A. This medication (Benadryl) targets H2 receptors to alleviate symptoms: This statement is incorrect. Diphenhydramine is an H1 receptor antagonist, not an H2 antagonist. H1 receptors are primarily involved in allergic reactions, whereas H2 receptors are related to gastric acid secretion.

B. Take this medication on an empty stomach before breakfast. Drowsiness is a common side effect of diphenhydramine (Benadryl): While drowsiness is indeed a common side effect, taking diphenhydramine on an empty stomach is not necessarily required and may lead to gastrointestinal discomfort. It can be taken with food if preferred.

C. Avoid CNS depressants while taking diphenhydramine (Benadryl): This is an important teaching point. Diphenhydramine can cause sedation, and the use of other CNS depressants (like alcohol or sedatives) can enhance this effect, increasing the risk of excessive drowsiness or other complications.

D. This medication is a 2nd generation antihistamine: This statement is incorrect. Diphenhydramine is actually a first-generation antihistamine. First-generation antihistamines tend to cause more sedation and other side effects compared to second-generation antihistamines, which are less sedating.

E. Paradoxical reactions can be seen with this medication: This is true. In some individuals, particularly children, diphenhydramine can cause paradoxical reactions, such as increased excitability or hyperactivity, rather than the expected sedation. This is an important consideration to discuss with clients.