A client is wearing a Venturi mask to deliver oxygen and the dinner tray has arrived. What action by the nurse is best?

Assess the client’s oxygen saturation and, if normal, turn off the oxygen.

Have the client lift the mask off the face when taking bites of food.

Turn the oxygen off while the client eats the meal and then restart it.

Determine if the client can switch to a nasal cannula during the meal

Answer and Explanation

The Correct Answer is D

Choice A Reason:

Assess the client’s oxygen saturation and, if normal, turn off the oxygen. This option is not ideal because turning off the oxygen completely can lead to a rapid drop in oxygen saturation levels, especially in patients who require continuous oxygen therapy. Monitoring oxygen saturation is crucial, but turning off the oxygen is not recommended unless specifically advised by a healthcare provider. Normal oxygen saturation levels typically range from 95% to 100%1. If the levels drop below 90%, it can lead to hypoxemia, which can cause serious complications.

Choice B Reason:

Have the client lift the mask off the face when taking bites of food. This option is also not ideal because it can be cumbersome for the client and may lead to inconsistent oxygen delivery. The Venturi mask is designed to provide a precise concentration of oxygen, and lifting it off repeatedly can disrupt this consistency. Additionally, it can be uncomfortable and impractical for the client to manage the mask while eating.

Choice C Reason:

Turn the oxygen off while the client eats the meal and then restart it. This option is not recommended for similar reasons as Choice A. Turning off the oxygen can lead to a significant drop in oxygen saturation levels, which can be dangerous for the client. Continuous oxygen therapy is essential for maintaining adequate oxygen levels in patients who require it. Interrupting this therapy, even temporarily, can have adverse effects on the client’s health.

Choice D Reason:

Determine if the client can switch to a nasal cannula during the meal. This is the best option because a nasal cannula allows the client to receive continuous oxygen while eating. The nasal cannula is less obtrusive and more comfortable for the client, enabling them to eat without significant interruption to their oxygen therapy. Nasal cannulas are commonly used for patients who need supplemental oxygen but also need to perform activities such as eating and talking. This approach ensures that the client maintains adequate oxygen levels while having their meal.

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Correct Answer is A

Explanation

Choice A: Metformin

Reason: Metformin is known to interact with contrast material, particularly iodinated contrast media, and can increase the risk of acute kidney injury (AKI). This interaction can lead to a condition known as contrast-induced nephropathy (CIN) or contrast-induced acute kidney injury (CI-AKI). Metformin is primarily excreted by the kidneys, and impaired renal function can lead to its accumulation, increasing the risk of lactic acidosis, a rare but serious complication. Therefore, it is generally recommended to withhold metformin before and after the administration of contrast media until renal function is confirmed to be normal.

Choice B: Carvedilol

Reason: Carvedilol is a beta-blocker used to treat high blood pressure and heart failure. It does not have a known interaction with contrast media that would increase the risk of acute kidney injury. Carvedilol primarily affects the cardiovascular system and does not significantly impact renal function or interact with contrast agents.

Choice C: Nitroglycerin

Reason: Nitroglycerin is used to treat angina and other heart conditions by dilating blood vessels. It does not interact with contrast media in a way that would increase the risk of acute kidney injury. Nitroglycerin’s primary effects are on the cardiovascular system, and it does not have nephrotoxic properties.

Choice D: Atorvastatin

Reason: Atorvastatin is a statin used to lower cholesterol levels. While it can have effects on liver enzymes and muscle tissue, it does not interact with contrast media to increase the risk of acute kidney injury. Atorvastatin is metabolized by the liver and does not significantly impact renal function.

A. Hypotension, tachycardia, and lethargy B. Dizziness with headache 7/10 on numeric scale C. Abdominal pain, hypertensive, and constipated D. Febrile, tachycardia, and vomiting

Correct Answer is A

Explanation

Choice A reason:

Hypotension (low blood pressure), tachycardia (rapid heart rate), and lethargy are critical symptoms that can indicate a life-threatening condition such as shock or severe dehydration. Hypotension can lead to inadequate perfusion of vital organs, resulting in multi-organ failure if not promptly addressed1. Tachycardia is often a compensatory mechanism for hypotension, and lethargy indicates decreased cerebral perfusion. Immediate intervention is required to stabilize the patient’s condition and prevent further deterioration.

Choice B reason:

Dizziness with a headache rated 7/10 on the numeric scale is concerning but not immediately life-threatening. These symptoms could indicate a variety of conditions, such as migraine, vertigo, or even a mild concussion. While the patient should be assessed and treated, they do not present the same immediate risk as hypotension and tachycardia.

Choice C reason:

Abdominal pain, hypertension (high blood pressure), and constipation are symptoms that need medical attention but are not immediately life-threatening. Hypertension can lead to serious complications if left untreated, but it does not require the same urgent intervention as hypotension. Abdominal pain and constipation, while uncomfortable and potentially indicative of underlying issues, do not pose an immediate threat to life.

Choice D reason:

Febrile (fever), tachycardia, and vomiting are symptoms that suggest an infection or other acute illness. While these symptoms are concerning and need prompt evaluation, they do not pose the same immediate risk as hypotension and tachycardia. Fever and vomiting can lead to dehydration, but this typically develops over a longer period compared to the rapid deterioration seen with hypotension.

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A client is wearing a Venturi mask to deliver oxygen and the dinner tray has arrived. What action by the nurse is best?

Nursing Test Bank

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