Overhydration

• We can't store extra water.
  • 1 extra liter of water is fully excreted in ~3 hr
• Premature hydration causes gastric retention and vomiting.
• Water intoxication is possible
  • Elderly, certain medications, lung disease, etc.
  • Generally requires several days to achieve
  • Maximum water excretion is ~.9 L/hr
• May delay water conservation
  • (requires about 5 days to develop)
• Produces annoying volumes of urine

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