A nurse admits a client who has a subarachnoid hemorrhage and increased intracranial pressure (ICP). Which of the following medications should the nurse expect to administer to decrease ICP?
Dopamine
Mannitol
Nicardipine
Phenytoin
The Correct Answer is B
A. Dopamine: Dopamine is a catecholamine often used to increase blood pressure and cardiac output in hypotensive states. It does not directly reduce intracranial pressure (ICP).
B. Mannitol: Mannitol is an osmotic diuretic commonly used to reduce intracranial pressure in clients with conditions such as subarachnoid hemorrhage, traumatic brain injury, or cerebral edema. It works by drawing fluid from brain tissue into the bloodstream, thereby reducing cerebral edema and ICP.
C. Nicardipine: Nicardipine is a calcium channel blocker used primarily to lower blood pressure in hypertensive emergencies. While it can indirectly impact intracranial pressure by reducing cerebral perfusion pressure, its primary mechanism of action is not targeted at reducing ICP.
D. Phenytoin: Phenytoin is an antiepileptic medication used to prevent and control seizures. While it may be indicated in clients who have experienced a subarachnoid hemorrhage to prevent seizures, it does not directly reduce intracranial pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Third spacing: Third spacing refers to the shifting of fluid from the intravascular space into the interstitial space, leading to decreased circulating volume. While third spacing can contribute to hypovolemic shock, it is not specific to obstructive shock.
B. Cardiomyopathy: Cardiomyopathy is a condition characterized by abnormalities in the heart muscle structure and function. While cardiomyopathy can lead to heart failure, it is not directly associated with obstructive shock.
C. Cardiac tamponade: Cardiac tamponade occurs when fluid accumulates in the pericardial sac, compressing the heart and impairing its ability to fill properly. This condition can lead to obstructive shock due to decreased cardiac output. Signs and symptoms include hypotension, muffled heart sounds, distended neck veins, and pulsus paradoxus.
D. Ruptured aneurysm: A ruptured aneurysm can lead to hypovolemic shock due to acute blood loss. While it can cause significant hemodynamic instability, it is not a characteristic diagnosis of obstructive shock.
Correct Answer is B
Explanation
A. "Note if you see any flashing bright lights on the grid." Flashing lights are not typically associated with macular degeneration. This symptom is more commonly associated with conditions like retinal detachment or migraine headaches.
B. "Check to see if the lines on the grid are blurry or distorted." This statement is correct. The Amsler grid is used to detect changes in central vision, which are common in macular degeneration. Patients with macular degeneration may perceive wavy or distorted lines instead of straight lines when looking at the grid, indicating central vision loss.
C. "Monitor for the lines on the grid to change in color or brightness." Changes in color or brightness of the lines on the grid are not typical features of macular degeneration. This statement does not accurately reflect the purpose of using an Amsler grid for macular degeneration.
D. "Watch for floating dark spots on the grid." Floating dark spots (floaters) are not typically associated with macular degeneration. Floaters are more commonly associated with conditions like posterior vitreous detachment or retinal detachment.
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