Which statement is true about lactated Ringer's in relation to calcium-containing medications?

• A. Avoid LR with calcium-containing meds in the same line.
• B. LR contains only sodium chloride.
• C. LR is always compatible with calcium-containing meds.
• D. LR should never be used in general crystalloids.

Answer: (A)

Lactated Ringer's contains calcium, so giving another calcium-containing medication through the same IV line can lead to chemical interactions and precipitation. This risk can clog lines or affect the drug’s effectiveness, so the safer approach is to avoid co-infusing calcium-containing meds in the same line as LR. Use a separate IV line or a different fluid without calcium, with flushing as needed between administrations.

LR is not just sodium chloride; it includes other electrolytes and lactate, and it isn’t guaranteed to be compatible with all calcium-containing meds. It is also a commonly used crystalloid, so saying it should never be used would be incorrect.