TOC  |  Lytes  

IV Solutions  |  TPN (Total Parenteral Nutrition)  

D 5W = 5%D/W     => (5 gm/100 mL) 50 gm/L glucose (278 mmol/L glucose), 252 mOsm/kg osmolality  |  170 calories/Liter

D10W = 10% D/W => 100 gm/L glucose, 505 mOsm/kg  |  340 calories/Liter

D50W = 50% D/W => 500 gm/L glucose, 2520 mOsm/kg

Normal saline/NS = 0.9% NaCl => 154 mEq/L Na, 154 mEq/L Cl, 308 mOsm/kg

1/2 NS = 0.45% NaCl => 77 mEq/L Na, 77 mEq/L Cl, 154 mOsm/kg   

3% NS = 3% NaCl => 513 Meq/L Na, 513 mEq/L Cl, 1026 mOsm/kg

Ringer's lactate => 130 mEq/L Na, 109 mEq/L Cl, 4 mEq/L K, 3 mEq/L Ca, 28 mEq/L lactate 

1 ampule of 50 mL 7.5% NaBicarbonate =>   44.6 mEq/amp Na HCo3 

1 ampule of 10 mL 10% CaCl => 13.6 mEq/amp CaCl

1 ampule of 10 mL 10% Ca-gluconate => 4.6 mEq/amp of Ca-gluconate

1 ampule of 15 mL 42% Na-phosphate => 3 mmol/L phosphate, 4 mEq/L Na

1 ampule of 15 mL 46% K-phosphate => 3 mmol/L phosphate, 4.4 mEq/L K

1 ampule of 10 mL 50% Mg-sulfate => 40.6 mEq/amp Mg-sulfate

In dehydrated patients with presumed normal total body sodium content,
Body water deficit = desired TBW - current TBW

• Desired TBW = [Measured serum Na (mEq/L) x current TBW] / 140 mEq/L
• Current TBW (L) = 0.6 x current body weight (kg)

Minimal urine output is usually over 500 mL/day in adults.
Normally, daily Na supplement is about 50-150 mEq/day, & daily K supplement is about 20-60 mEq/day in adequate renal function patients.

2008