A nurse notes that the specific gravity of urine is lower in infants than in older children. The nurse recognizes that the rationale for this difference is related to:
The infant having a higher basal metabolic rate
The infant’s kidneys being less able to concentrate urine
The infant having a greater percentage of body weight in water
The infant having a greater body surface area
The Correct Answer is C
a) The infant having a higher basal metabolic rate: Basal metabolic rate doesn't directly impact urine specific gravity.
b) The infant’s kidneys being less able to concentrate urine: In fact, infants have immature kidneys that are less efficient at concentrating urine, but this is not the primary reason for lower specific gravity.
c) The infant having a greater percentage of body weight in water: Infants have a higher percentage of body weight in water, leading to more dilute urine.
d) The infant having a greater body surface area: While body surface area influences some aspects of renal function, it's not the main factor affecting urine specific gravity in infants.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
a) Projectile vomiting: A hallmark symptom of pyloric stenosis due to the narrowing of the pyloric sphincter, leading to forceful and projectile vomiting.
b) Watery diarrhea: Not typically associated with pyloric stenosis.
c) Increased urine output: Unrelated to pyloric stenosis, urinary output might vary based on other factors.
d) Bloody stools: Typically not a primary symptom of pyloric stenosis, which primarily affects the passage of food from the stomach.
Correct Answer is A
Explanation
a) A high hemoglobin: Tricuspid atresia typically leads to decreased pulmonary blood flow, causing cyanosis and chronic hypoxemia, which can result in increased hemoglobin levels as the body compensates for low oxygen.
b) A prolonged PTT: While not typically associated with tricuspid atresia specifically.
c) A low hematocrit: Hematocrit levels might be normal or elevated due to chronic hypoxemia.
d) A low platelet count: Platelet count might not be directly affected by tricuspid atresia.
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