A client with a pneumothorax has a chest tube placed with a closed drainage system.
The LPN knows that all except the following are normal and expected findings of the closed drainage system?

Choice A rationale

Alcohol is a central nervous system depressant that can significantly potentiate the sedative effects of antihistamines, particularly first-generation ones like diphenhydramine. Combining these substances increases the risk of severe respiratory depression, impaired coordination, and extreme lethargy. For older adults, this combination is particularly dangerous as it markedly increases the risk of falls, confusion, and accidents. Therefore, avoiding alcohol is a critical safety instruction to prevent synergistic CNS depression and ensure the patient's well-being.

Choice B rationale

Antihistamines work by blocking H1 receptors, and many older formulations easily cross the blood-brain barrier, leading to significant drowsiness and sedation. Older adults are more sensitive to these side effects due to age-related changes in metabolism and distribution. Drowsiness can impair the ability to perform daily tasks and increases the risk of injury. Educating the client about this common side effect allows them to plan their activities safely and avoid driving or operating machinery while impaired.

Choice C rationale

Antihistamines should generally not be taken around the clock unless specifically directed for a chronic condition, and even then, they are often taken as needed or at specific intervals like bedtime. For many older adults, taking these medications continuously can lead to an accumulation of anticholinergic side effects, such as urinary retention, constipation, and cognitive impairment. Taking them only when allergy symptoms are present or as a single daily dose helps minimize the total drug burden and potential adverse reactions.

Choice D rationale

Antihistamines often have anticholinergic properties that lead to drying of the mucous membranes, resulting in symptoms like dry mouth, dry eyes, and thickened bronchial secretions. Increasing fluid intake helps to alleviate these drying effects and maintain hydration. For older adults, maintaining adequate hydration is also important for renal clearance of the medication. Encouraging the client to drink more water helps mitigate the uncomfortable "drying out" sensation and supports overall physiological balance during drug therapy. .

Choice B rationale

Obstructive sleep apnea (OSA) is characterized by the repetitive collapse of the upper airway during sleep, leading to periods of apnea and hypoxemia. A Continuous Positive Airway Pressure (CPAP) machine is the gold-standard treatment for OSA. It delivers a constant stream of pressurized air through a mask, which acts as a physical splint to keep the airway open. The nurse would expect this device to be present at the bedside for use whenever the client sleeps.

Choice A rationale

While supplemental oxygen may be used in some respiratory conditions, it is not the primary or standard treatment for obstructive sleep apnea. In OSA, the problem is a mechanical blockage of the airway, not necessarily a lack of ambient oxygen. Providing oxygen through a tank or concentrator without addressing the airway collapse does not prevent the apneic episodes. The CPAP is the specific tool designed to overcome the physiological obstruction that defines this specific sleep disorder.

Choice C rationale

An incentive spirometer is used to encourage deep breathing and prevent atelectasis, typically in postoperative patients or those with pneumonia. It helps expand the alveoli and clear secretions. However, it is a voluntary exercise performed while awake and does nothing to prevent the airway collapse that occurs during sleep in patients with OSA. While it is a common bedside respiratory tool, it is not a specific or indicated treatment for managing obstructive sleep apnea.

Choice D rationale

A pulse oximeter is a diagnostic tool used to monitor oxygen saturation, but it is not a treatment device. While a nurse might use a pulse oximeter to assess the severity of desaturation during sleep apnea events, the question asks for a device used to manage the condition. The pulse oximeter provides data but does not provide the therapeutic intervention needed to keep the airway patent. The CPAP machine is the therapeutic device expected for this diagnosis.