A client is on a ventilator. Alarms are sounding, indicating an increase in peak airway pressure. The nurse assesses first for what?
Malfunction of the alarm button.
A cut or slice in the tubing from the ventilator.
Higher than normal endotracheal cuff pressure.
A kink in the ventilator tubing.
The Correct Answer is D
Choice A Reason:
Malfunction of the alarm button is unlikely to be the cause of increased peak airway pressure. The alarm is designed to alert the nurse to a problem with the ventilator or the patient’s airway, not to malfunction itself. Therefore, this is not the first thing the nurse should assess.
Choice B Reason:
A cut or slice in the tubing from the ventilator could cause a loss of pressure or air leak, but it would not typically result in increased peak airway pressure. Instead, it would likely cause a decrease in pressure and potentially trigger a different alarm.
Choice C Reason:
Higher than normal endotracheal cuff pressure can contribute to increased peak airway pressure. However, it is not the most immediate concern compared to a kink in the tubing, which can completely obstruct airflow and rapidly compromise the patient’s ventilation.
Choice D Reason:
A kink in the ventilator tubing is a common and immediate cause of increased peak airway pressure. It obstructs the flow of air, leading to a buildup of pressure in the system. This is the first thing the nurse should assess and correct to ensure the patient is receiving adequate ventilation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Documenting that the nasogastric tube is in the correct place is not appropriate in this scenario. A gastric pH of 7.35 is too high for stomach contents, which typically have a pH between 1.5 and 3.5. This high pH suggests that the tube may be misplaced, possibly in the respiratory tract or another non-gastric location. Therefore, documenting the tube as correctly placed could lead to serious complications if the tube is indeed misplaced.
Choice B Reason:
Notifying the health care provider is the most appropriate action. A pH of 7.35 is indicative of a potential misplacement of the nasogastric tube. The health care provider needs to be informed immediately to take corrective actions, such as ordering an X-ray to confirm the tube’s placement or re-evaluating the tube’s position. This step is crucial to ensure patient safety and prevent complications such as aspiration pneumonia or other adverse effects.
Choice C Reason:
Checking for placement by auscultating for air injected into the tube is an outdated and unreliable method. This technique can sometimes give false assurance of correct placement, as the sound of air can be heard even if the tube is in the respiratory tract. Current best practices recommend using pH testing and radiographic confirmation for accurate placement verification.
Choice D Reason:
Retesting the pH using another strip might seem like a reasonable step, but it is not the best immediate action. If the initial pH test shows a value of 7.35, it is unlikely that retesting will yield a significantly different result. The priority should be to notify the health care provider to address the potential misplacement promptly.
.
Correct Answer is B
Explanation
Title: Choice A Reason:
Patients with seafood allergies may have a higher risk of allergic reactions to iodinated contrast media used in CT scans. However, this is not a definitive contraindication. The nurse should inform the patient to notify their healthcare provider about any known allergies, including seafood, as a precautionary measure. This allows the healthcare team to take necessary steps to prevent any adverse reactions, such as premedication with antihistamines or corticosteroids.
Title: Choice B Reason:
Metformin is a common medication used to manage type II diabetes. When a patient is scheduled for a CT scan with IV contrast, it is crucial to withhold Metformin before the procedure. This is because the combination of Metformin and iodinated contrast can increase the risk of contrast-induced nephropathy (CIN) and lactic acidosis, a rare but serious condition. The general recommendation is to stop Metformin at the time of or prior to the procedure and withhold it for 48 hours after the procedure, resuming only after renal function has been re-evaluated and found to be normal.
Title: Choice C Reason:
CT scans, especially those requiring IV contrast, are typically performed in a radiology suite equipped with the necessary technology and medical personnel. Performing such a procedure at the bedside is uncommon and not standard practice due to the need for specialized equipment and immediate access to emergency care in case of adverse reactions. Therefore, this statement is incorrect.
Title: Choice D Reason:
Taking Metformin as usual before the test is not recommended due to the risk of lactic acidosis when combined with iodinated contrast. As previously mentioned, Metformin should be withheld before and after the procedure until renal function is confirmed to be normal. This precaution helps to prevent any potential complications associated with the interaction between Metformin and the contrast agent.
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