Vasoconstriction, sodium retention, and water reabsorption to increase circulating fluid volume and cardiac output are the primary functions of:
Stroke Volume
Renin-Angiotensin-Aldosterone-System (RAAS)
Brain and Atrial natriuretic peptides (BNP & ANP)
Erythropoietin
The Correct Answer is B
Choice A reason: Stroke Volume refers to the amount of blood pumped by the left ventricle of the heart in one contraction, not to the regulation of fluid volume and cardiac output.
Choice B reason: Renin-Angiotensin-Aldosterone-System (RAAS) is responsible for vasoconstriction, sodium retention, and water reabsorption, which helps to increase circulating fluid volume and cardiac output.
Choice C reason: Brain and Atrial natriuretic peptides (BNP & ANP) actually work to decrease blood volume and pressure, not increase them.
Choice D reason: Erythropoietin primarily stimulates red blood cell production and does not directly affect fluid volume or cardiac output.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason (acute renal failure): Patients recovering from acute renal failure are not typically restricted to only vegetable proteins. Protein needs can vary based on the individual's condition and treatment plan.
Choice B reason (acute renal failure): Fluid intake recommendations for patients recovering from acute renal failure depend on their current kidney function and fluid balance status. A blanket restriction to 1500 mL or less per day may not be appropriate for all patients.
Choice C reason (acute renal failure): Avoiding nephrotoxic drugs is crucial for patients recovering from acute renal failure to prevent further kidney damage.
Choice D reason (acute renal failure): Self-catheterization for residual urine is not a standard recommendation for all patients recovering from acute renal failure. This would be specific to patients with urinary retention issues.
Correct Answer is D
Explanation
Choice A reason: An INR of 0.9 is within the normal range (0.8-1.2) and does not support the presence of bruising or bleeding disorders.
Choice B reason: A hematocrit level of 28% is below the normal range (36%-50% for women, 40%-54% for men), indicating anemia, but it does not directly explain bruising or petechiae.
Choice C reason: A WBC count of 4500 is within the normal range (4500-11000), suggesting that there is no active infection or leukocytosis that would explain the bruising.
Choice D reason: A platelet count of 60000 is below the normal range (150000-450000), which can lead to easy bruising and petechiae, supporting the nurse's observation.
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