Classical symptoms of impending shock in a child who is dehydrated are:

B

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A Incorrect: Classical symptoms of impending shock in a child who is dehydrated are not decreased skin elasticity, flat fontanel, decreased urine output. These are symptoms of mild dehydration.
B Correct: Classical symptoms of impending shock in a child who is dehydrated are azotemia, rapid thready pulse, mottled skin, low blood pressure. These are symptoms of severe dehydration.
C Incorrect: Classical symptoms of impending shock in a child who is dehydrated are not dusky and grayish skin color, increased weak pulse, depressed fontanel. These are symptoms of moderate dehydration.
D Incorrect: Classical symptoms of impending shock in a child who is dehydrated are not decreased tears, oliguria, depressed fontanel, slightly increased pulse. These are additional symptoms of moderate dehydration.