The nurse is caring for a patient in the Intensive Care Unit (ICU) with a ventriculostomy and intracranial pressure (ICP) reading of 30mmHg. The nurse notes a widened pulse pressure, irregular respirations. and bradycardia. The neurosurgeon instructs the nurse to drain cerebrospinal fluid. The nurse would also anticipate which medication administration order from the provider?
3% Normal Saline
Nitroprusside
Norepinephrine
Furosemide
The Correct Answer is A
A) 3% Normal Saline:
Elevated ICP can lead to a life-threatening condition known as cerebral herniation, and it often triggers the Cushing’s triad—widened pulse pressure, bradycardia, and irregular respirations, all of which the nurse has noted. Hypertonic saline (such as 3% Normal Saline) is commonly used to manage increased ICP because it creates an osmotic gradient that draws fluid out of the brain tissue, reducing cerebral edema and lowering ICP. The goal is to reduce swelling and prevent further brain damage.
B) Nitroprusside:
Nitroprusside is a potent vasodilator that is used to treat hypertension and reduce afterload in conditions like heart failure or aortic dissection. However, in this case, nitroprusside is contraindicated because it could cause a drop in systemic blood pressure, which would worsen cerebral perfusion in a patient with elevated ICP.
C) Norepinephrine:
Norepinephrine is a vasopressor used to treat hypotension by increasing systemic vascular resistance and blood pressure. Although norepinephrine may be used to support blood pressure in critically ill patients, in this context of elevated ICP, the priority is to reduce ICP, not to increase blood pressure further. Increasing the systemic vascular resistance with norepinephrine could exacerbate ICP by increasing the volume of blood in the cranium
D) Furosemide:
Furosemide is a loop diuretic that can reduce fluid volume and help treat conditions like edema or heart failure. While furosemide can reduce overall fluid volume, it is not typically used to manage elevated ICP in this context. Diuretics like furosemide may have a role in managing cerebral edema, but they are not as effective as hypertonic saline in rapidly reducing ICP.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","E"]
Explanation
A) Assess the respiratory status hourly and as needed
It is essential for the nurse to frequently monitor and assess the respiratory status of a client on a ventilator, as changes can occur rapidly. Regular assessments allow the nurse to detect any early signs of respiratory distress, hypoxia, or ventilator malfunction. Hourly assessments are standard practice in the intensive care unit (ICU), and additional assessments may be necessary if there are concerns about the patient’s respiratory condition.
B) Ensure that a manual resuscitation bag is at the bedside
A manual resuscitation bag (Ambu bag) is a critical piece of emergency equipment that should always be available at the bedside of a patient on mechanical ventilation. In the event of ventilator failure, accidental extubation, or sudden respiratory distress, the nurse needs to be able to provide manual ventilation.
C) Check the patient's pulse oximetry once every shift
Although monitoring pulse oximetry is important in ICU patients on a ventilator, checking it only once per shift is insufficient. Continuous monitoring of oxygen saturation via pulse oximetry is a much more appropriate approach to ensure the patient is adequately oxygenated, especially when on a ventilator.
D) Adjust the ventilator settings based on the client’s level of consciousness
Adjusting the ventilator settings should be done by the healthcare provider or respiratory therapist, not the nurse, unless directed by the provider. While the patient's level of consciousness can influence their respiratory drive, the nurse does not have the authority or expertise to modify ventilator settings based on consciousness levels.
E) Collaborate frequently with the respiratory therapist
Collaboration with the respiratory therapist is essential for managing a patient on a ventilator. Respiratory therapists have specialized training in ventilator management and can assist with adjusting ventilator settings, monitoring the patient’s lung function, and troubleshooting ventilator malfunctions.
Correct Answer is B
Explanation
A) Insert an oral airway and suction as needed:
This is generally not the first intervention for impaired glossopharyngeal (CN IX) and vagus nerve (CN X) function. The glossopharyngeal and vagus nerves play a critical role in swallowing, gag reflex, and the ability to protect the airway. While an airway might be necessary in cases of severe dysfunction, withholding food and fluids is a more immediate and specific concern when these cranial nerves are impaired, as it prevents aspiration risk.
B) Withhold oral fluids and food:
The glossopharyngeal nerve (CN IX) is involved in taste and swallowing, and the vagus nerve (CN X) is crucial for the motor control of the pharynx and larynx, which are involved in swallowing and protecting the airway. Dysfunction of these nerves can lead to difficulty swallowing (dysphagia), increased risk for aspiration, and the inability to protect the airway effectively. Withholding oral fluids and food helps prevent aspiration, a major risk when these nerves are impaired, until further assessment and management can be done.
C) Apply artificial tears to protect the cornea:
While it is important to protect the cornea in patients with cranial nerve dysfunction (specifically the facial nerve, CN VII), this does not directly relate to the glossopharyngeal (CN IX) and vagus (CN X) nerves. The glossopharyngeal and vagus nerves affect swallowing and airway protection, not eye lubrication. Applying artificial tears would not address the risk associated with impaired swallowing or airway protection.
D) Speak clearly while facing the patient:
Although speaking clearly and facing the patient might be helpful for communication, especially if the patient has difficulty with speech due to nerve impairment, it does not address the immediate and more critical concern of impaired swallowing and airway protection associated with dysfunction of the glossopharyngeal and vagus nerves. The primary concern is ensuring the patient is not at risk for aspiration while eating or drinking.
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