Which of the following is true of dehydration?


• Dehydration refers to an extracellular fluid volume deficit.

• Dehydration is a common and serious fluid imbalance that leads to hypovolemia.

Mild fluid loss is characterized with a loss of 1-2L of water or 2% of body weight.

• Fluid loss of 3-5 L of water or 5% of body weight is considered moderate dehydration.

• The thirst mechanism is usually triggered by low blood pressure or fluid volume depletion as small as 0.5%.

• Impaired thirst mechanism can also decrease fluid intake.

• Excessive fluid output without a balancing input can lead to dehydration.

• Dehydration can lead to low tissue perfusion - which is why you may note "skin tenting."

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