NMS. Surgery

6

Part I ♦ Foundations

Table 1-3: Electrolyte Concentration in Various Intravenous Fluids Fluid Na + (mEq/L) K + (mEq/L) Mg ++ (mEq/L) Ca ++ (mEq/L) Cl − (mEq/L) Normal saline (0.9% NaCl) 154 0 0 0 154 0 308 1/2 normal saline (0.5% NaCl) 77 0 0 0 77 0 154 Hypertonic saline (3% saline) 513 0 0 0 513 0 1027 Lactated Ringer’s 130 4 0 2.7 98 28 525 Plasmalyte* 140 5 3 0 98 0 294 Lactate (mEq/L) Osmolarity (mOsm/L)

*Plasmalyte also contains 27 mEq/L acetate and 23 mEq/L gluconate.