PAEA Surgery End Of Rotation (EOR) Practice Exam

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What are some clinical signs of dehydration and hypovolemia?

  1. Tachycardia, hypotension, pale skin

  2. Increased capillary refill time, dizziness, faintness

  3. Nausea, thirst, decreased urine output

  4. All of the above

The correct answer is: All of the above

Dehydration and hypovolemia are critical conditions where the body lacks adequate fluid volume, leading to various physiological responses. The correct response indicates that all listed clinical signs are relevant manifestations that may be observed in these states. Tachycardia, hypotension, and pale skin are indicative of the cardiovascular response to reduced blood volume. When the body is dehydrated, it compensates by increasing heart rate and constricting blood vessels to maintain blood pressure, which can result in paleness due to decreased perfusion. Increased capillary refill time, dizziness, and faintness reflect the body's response to inadequate circulation to peripheral tissues and organs. Capillary refill time is often extended in hypovolemia because the body prioritizes central circulation, leading to symptoms like dizziness or faintness from reduced cerebral perfusion. Nausea, thirst, and decreased urine output are more systemic signs of dehydration. Thirst is a primary symptom, signifying the body's requirement for fluid replenishment. Decreased urine output occurs as the kidneys conserve water to counteract a drop in volume and preserve homeostasis. Because each set of clinical signs accurately represents the body's response to dehydration and hypovolemia, selecting the answer that includes all of them correctly captures