What manifestation is an indication of increased intracranial pressure?
Hyperthermia
Confusion
Hypotension
Angina
The Correct Answer is B
Choice A reason: Hyperthermia is not a primary sign of increased intracranial pressure. It may occur in brain injury due to hypothalamic dysfunction, but increased intracranial pressure directly causes neurological symptoms like confusion due to brain compression, making this incorrect.
Choice B reason: Confusion is a hallmark of increased intracranial pressure, as elevated pressure compresses brain tissue, impairing neuronal function and cognition. This disrupts normal brain signaling, leading to altered mental status, making this the correct manifestation.
Choice C reason: Hypotension is not typical; increased intracranial pressure often causes hypertension (Cushing’s reflex) to maintain cerebral perfusion. Low blood pressure does not align with the body’s compensatory response to brain compression, making this choice incorrect.
Choice D reason: Angina, chest pain from cardiac ischemia, is unrelated to increased intracranial pressure. Intracranial pressure affects brain function, causing neurological symptoms like confusion, not cardiac pain, making this choice incorrect for this condition.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Loss of the thirst mechanism causes dehydration and hypernatremia, not hyponatremia, as water loss concentrates sodium. Hyponatremia requires excess water or sodium loss, making this choice incorrect for causing low sodium levels.
Choice B reason: Excessive aldosterone secretion causes sodium retention and hypernatremia, as it promotes sodium reabsorption in the kidneys. Hyponatremia involves sodium loss or dilution, not retention, making this choice incorrect for causing hyponatremia.
Choice C reason: Excessive sweating causes loss of sodium-containing fluids, leading to hyponatremia if water is replaced without electrolytes. This depletes serum sodium, disrupting electrolyte balance, making this the correct cause of hyponatremia in this context.
Choice D reason: Prolonged rapid, deep respirations cause respiratory alkalosis, not directly affecting sodium levels. Hyponatremia requires sodium loss or water excess, not respiratory changes, making this choice incorrect for causing low sodium levels.
Correct Answer is A
Explanation
Choice A reason: Gamma-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter in the central nervous system, reducing neuronal excitability by opening chloride channels, hyperpolarizing neurons, and preventing action potentials, making this the correct choice.
Choice B reason: Norepinephrine is an excitatory neurotransmitter and hormone, increasing neuronal activity and arousal in the sympathetic nervous system. It does not inhibit neural signaling, making this choice incorrect for an inhibitory neurotransmitter.
Choice C reason: Histamine acts as a neurotransmitter promoting wakefulness and arousal, not inhibition. It stimulates neuronal activity in the brain, unlike inhibitory neurotransmitters that reduce firing, making this choice incorrect for the role.
Choice D reason: Glutamate is the primary excitatory neurotransmitter, promoting neuronal firing by depolarizing neurons via ion channel activation. It does not inhibit neural activity, making this choice incorrect for an inhibitory neurotransmitter.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.