Management of Hypovolemic Hyponatremia with Lactated Ringer's Solution

Fluid Resuscitation

Lactated Ringer's (LR) solution contains 130 mEq/L of sodium, making it slightly hypotonic with an osmolarity of 273 mOsm/L compared to plasma, and is recommended as a preferred crystalloid for fluid resuscitation in hypovolemic hyponatremia by the American Association for the Study of Liver Diseases 1, 2, 3, 4
The American Association for the Study of Liver Diseases recommends LR as the preferred crystalloid for fluid resuscitation in hypovolemic hyponatremia in cirrhotic patients 3, 4

For hypovolemic hyponatremia, treatment guidelines specifically recommend LR as a preferred crystalloid solution for fluid resuscitation, effectively increasing serum sodium by correcting the volume deficit that triggered water retention and dilutional hyponatremia 3, 4
In patients with hypovolemic states, the volume expansion effect of LR can outweigh its slightly hypotonic nature, resulting in a net increase in serum sodium 3, 4

LR should be avoided in patients with severe head trauma due to its slightly hypotonic nature, and isotonic or hypertonic solutions are preferred instead 5
For patients with cirrhosis and hyponatremia, LR is specifically recommended for treating hypovolemic hyponatremia 3, 4