Question of the Week #11 A 1-month-old infant with projectile vomiting, inability to tolerate feeds, sunken fontanelles, and dry diapers is diagnosed with pyloric stenosis and severe dehydration. Which of the following MOST accurately describes a physiologic change that maintains adequate blood pressure and renal perfusion in the context of this patient’s clinical condition?A. Increased parasympathetic toneB. Decreased sodium reabsorption at the renal tubuleC. Decreased secretion of arginine vasopressin by the pituitary glandD. Increased secretion of renin by the juxtaglomerular cells Time is Up! Click here to find out how to get involved!