A patient presents to the emergency department (ED) complaining of nausea, vomiting, and the “worst headache he has ever experienced.”. While examining the patient, the nurse notes left leg and arm weakness.The patient is immediately sent to the radiology department for a CT scan. The registered nurse (RN) identifies the immediate need for treatment because:
A hemorrhagic brain attack is more common than an ischemic brain attack.
A thrombolytic drug will cause the peripheral and central reflexes to become hyper-reactive.
A hemorrhagic brain attack requires immediate intervention to prevent further damage.
An ischemic brain attack is less severe than a hemorrhagic brain attack.
The Correct Answer is C
Choice A rationale
A hemorrhagic brain attack (stroke) is less common than an ischemic brain attack. Ischemic strokes account for the majority of strokes.
Choice B rationale
Thrombolytic drugs are used to treat ischemic strokes, not hemorrhagic strokes. They do not cause hyper-reactive reflexes.
Choice C rationale
A hemorrhagic brain attack requires immediate intervention to prevent further damage. Hemorrhagic strokes involve bleeding in the brain, which can rapidly worsen and cause severe damage.
Choice D rationale
An ischemic brain attack is not necessarily less severe than a hemorrhagic brain attack. Both types of strokes are serious, but hemorrhagic strokes often require more urgent intervention due to the risk of ongoing bleeding.
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Correct Answer is D
Explanation
Choice A rationale
Hypokalemia can cause muscle weakness and cramps, but it does not typically lead to severe muscle spasms causing exhaustion. The patient’s symptoms of lethargy and weakness are more likely related to electrolyte imbalances and dehydration rather than muscle spasms.
Choice B rationale
While low potassium levels can affect cellular metabolism, the primary issue here is not glycolysis. The patient’s symptoms are more consistent with dehydration and electrolyte imbalances rather than a metabolic shift to glycolysis.
Choice C rationale
Hypokalemia can cause cells to become hyperpolarized, leading to muscle weakness and decreased reflexes. However, the patient’s symptoms of lethargy and weakness are more likely due to dehydration and electrolyte imbalances rather than cellular hyperpolarization.
Choice D rationale
Hypernatremia, or high sodium levels, can cause cellular dehydration, leading to symptoms such as lethargy and weakness. The patient’s lab results and clinical presentation are consistent with hypernatremia-induced cellular dehydration, which explains his symptoms.
Correct Answer is A
Explanation
Choice A rationale
A blood pressure reading of 180/120 mmHg or higher is indicative of a hypertensive crisis. This condition requires immediate medical attention to prevent damage to vital organs such as the heart, kidneys, and brain.
Choice B rationale
A heart rate of 90 beats per minute is within the normal range and does not indicate a hypertensive crisis. While it is important to monitor heart rate, it is not a definitive sign of a hypertensive emergency.
Choice C rationale
A respiratory rate of 20 breaths per minute is within the normal range and does not indicate a hypertensive crisis. Respiratory rate alone is not a reliable indicator of hypertensive emergencies.
Choice D rationale
A temperature of 37°C (98.6°F) is normal and does not indicate a hypertensive crisis. Body temperature is not a primary indicator of hypertensive emergencies.