Final answer:
Fluid volume deficit, or dehydration, can be caused by vomiting, kidney failure, fever, and diarrhea. These conditions result in excessive water loss without adequate fluid replacement. Water intoxication, on the other hand, does not cause fluid volume deficit but leads to hyponatremia.
Step-by-step explanation:
Fluid volume deficit, commonly known as dehydration, can result from several conditions where there is excessive water loss from the body or inadequate fluid intake. The conditions that can lead to fluid volume deficit include:
- Vomiting - Frequent vomiting prevents keeping liquids down and contributes to dehydration, particularly if fluids are not sufficiently replenished.
- Kidney failure - In kidney disease, there can be an excessive renal water loss which can contribute to dehydration.
- Fever - During a fever, insensible water losses may increase significantly, potentially leading to dehydration if fluids are not replenished.
- Diarrhea - Persistent diarrhea causes loss of water and electrolytes, leading to dehydration.
However, water intoxication, which is caused by consuming too much water, does not lead to fluid volume deficit but rather to a dilution of electrolytes in the body, known as hyponatremia. This can cause reduced blood pressure and circulatory failure.