The best replacement for hypovolemia is dehydration.

The best alternatives to hypovolemia are rated as following:
★★★★★  dehydration
★★★  hypervolemia
★  hypotension
  hyponatremia
  cell dehydration

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Speaking about hypovolemia, one probably shouldn't forget about hyponatremia.

Other search terms related to hypovolemia and their ratings are:
★★★★★ hyponatremia
★ hypernatremia
You have in mind a companion for hypovolemia and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of hypovolemia in all years. Click on graph for more.
hypovolemia
dehydration
hypervolemia