January 29, 2020

Take Home Points

  • When compared to 0.9% saline, lactated ringers is a more balanced solution and more closely resembles our serum.
  • SALT ED and SMART trials show normal saline may increase the occurrence of major adverse kidney events in comparison to a balanced solution like LR. For large volume resuscitations, LR is a better choice.
  • Certain medications cannot be run with LR in the same IV line. Ampicillin, Carbapenems, Phenytoin, Potassium Phosphate, Nicardipine
  • Ceftriaxone and LR should never be running at the same time in children less than 28 days old.

October 10, 2019

Background: Serial lactate measurements is a common core measure that we follow in septic shock resuscitation. A number of readers have written in enquiring about whether resuscitation with lactated ringers instead of 0.9% saline would lead to increases in serum lactate.   It’s a great question, and one that I am not sure I had a solid answer for before reviewing this topic.  LR contains 28 mmol/L of sodium lactate and, on the surface, it seems reasonable to think that infusion of LR would lead to lactate increases. This could potentially confound the interpretation of serial serum lactate measurements.