Crystalloid IV fluid composition chart comparing normal saline, Lactated Ringer's, and Plasma-Lyte for anesthesia boards and fluid-management review.
Review the core table first, then launch practice to convert recognition into faster recall.
| Fluid | Na+ (mEq/L) | Cl- (mEq/L) | K+ (mEq/L) | Ca2+ (mEq/L) | Mg2+ (mEq/L) | Buffer | Osmolarity (mOsm/L) | pH |
|---|---|---|---|---|---|---|---|---|
| Normal saline | 154 | 154 | 0 | 0 | 0 | None | 308 | 5.5 |
| Lactated Ringer's | 130 | 109 | 4 | 3 | 0 | Lactate 28 mEq/L | 273 | 6.5 |
| Plasma-Lyte A | 140 | 98 | 5 | 0 | 3 | Acetate 27 + gluconate 23 mEq/L | 294 | 7.4 |
This tool is for educational purposes only. Always verify clinical values against current authoritative sources before patient care.