A 6-week-old infant with pyloric stenosis is scheduled for a pyloromyotomy. Which pre-operative nursing action has the highest priority?

Choice A reason: Increasing oral fluids may help with hydration, but it will not reduce skin flushing caused by lisinopril. Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor that dilates blood vessels and lowers blood pressure. Flushing occurs due to increased blood flow to the skin.

Choice B reason: Nitroglycerin is a vasodilator that relaxes smooth muscle in blood vessels and reduces chest pain caused by angina. It is not indicated for skin flushing caused by lisinopril. Moreover, nitroglycerin can lower blood pressure further and cause hypotension, headache, dizziness, and fainting.

Choice C reason: Going to an emergency department is not necessary for skin flushing caused by lisinopril. Flushing is not a sign of an allergic reaction or anaphylaxis, which would require immediate medical attention. Flushing is also not a symptom of a heart attack or stroke, which would present with other signs such as chest pain, shortness of breath, arm numbness, or slurred speech.

Choice D reason: Reassuring the client that facial flushing is a common side effect of lisinopril is the best action for the nurse to take. Flushing is not harmful or dangerous, and it usually subsides within a few hours. The nurse should explain the mechanism of action of lisinopril and its benefits for lowering blood pressure and preventing angina. The nurse should also advise the client to monitor his blood pressure regularly and report any signs of hypotension, such as dizziness, lightheadedness, or fainting.

Choice A reason: This is the correct answer because applying the client's positive airway pressure device is the most important intervention for the nurse to implement before leaving the client. Positive airway pressure device is a treatment that delivers pressurized air through a mask or nasal prongs to keep the upper airway open and prevent apnea episodes during sleep. Obstructive sleep apnea is a condition that causes repeated interruptions in breathing due to partial or complete collapse of the upper airway during sleep. The nurse should ensure that the device is fitted properly and functioning well.

Choice B reason: Elevating the head of the bed to a 45 degree angle is not a sufficient intervention for the nurse to implement before leaving the client. Elevating the head of the bed can help reduce snoring and improve breathing by preventing the tongue and soft palate from falling back and obstructing the airway. However, it may not be enough to prevent apnea episodes in clients with obstructive sleep apnea, especially if they have other risk factors such as obesity, enlarged tonsils, or nasal congestion. The nurse should also use other interventions such as positive airway pressure device, weight loss, or surgery.

Choice C reason: Removing dentures or other oral appliances is not a relevant intervention for the nurse to implement before leaving the client. Dentures or other oral appliances are devices that replace missing teeth or improve dental alignment. They may help improve speech, chewing, and appearance, but they do not have a direct impact on obstructive sleep apnea. The nurse should instruct the client to remove dentures or other oral appliances before going to bed to prevent discomfort, infection, or damage.

Choice D reason: Lifting and locking the side rails in place is not a necessary intervention for the nurse to implement before leaving the client. Side rails are bars that attach to the sides of the bed frame to prevent falls or injuries. They may provide safety and security for some clients, but they may also pose risks such as entrapment, strangulation, or agitation. The nurse should assess the need for side rails on an individual basis and consider alternative measures such as bed alarms, low beds, or floor mats.