Header
Header
Article

DailyMed – LACTATED RINGERS AND DEXTROSE LACTATED RINGERS


These products are sterile, nonpyrogenic solutions each containing isotonic concentrations of electrolytes (with or without dextrose) in water for injection. The solutions containing dextrose and electrolytes are hypertonic; those containing only electrolytes are isotonic. They are administered by intravenous infusion for parenteral replacement of extracellular losses of fluid and electrolytes, with or without minimal carbohydrate calories.

Each 100 mL of Lactated Ringer’s Injection, USP contains sodium chloride 600 mg, sodium lactate, anhydrous 310 mg, potassium chloride 30 mg and calcium chloride, dihydrate 20 mg. May contain hydrochloric acid and/or sodium hydroxide for pH adjustment. A liter provides 9 calories (from lactate), sodium (Na+), 130 mEq, potassium (K+) 4 mEq, calcium (Ca++) 3 mEq, chloride (Cl) 109 mEq and lactate [CH3CH(OH) COO] 28 mEq. The electrolyte content is isotonic (273 mOsmol/liter, calc.) in relation to the extracellular fluid (approx. 280 mOsmol/liter). The pH of the solution is 6.6 (6.0 − 7.5).

   Each 100 mL of Lactated Ringer’s and 5% Dextrose Injection, USP contains dextrose, hydrous 5 g plus the same ingredients and mEq values as Lactated Ringer’s Injection, USP (contains only hydrochloric acid for pH adjustment). A liter provides 179 calories (from dextrose and lactate) and has a hypertonic osmolar concentration of 525 mOsmol (calc.). The pH is 4.9 (4.0 − 6.5).

   The solutions contain no bacteriostat, antimicrobial agent or added buffer (except for pH adjustment) and each is intended only for use as a single-dose injection. When smaller doses are required the unused portion should be discarded.

   The solutions are parenteral fluid, nutrient and/or electrolyte replenishers.

   Dextrose, USP is chemically designated D-glucose, monohydrate (C6H12O6 • H2O), a hexose sugar freely soluble in water. It has the following structural formula:

  Calcium Chloride, USP is chemically designated calcium chloride, dihydrate (CaCl2 • 2 H2O), white fragments or granules freely soluble in water.

   Potassium Chloride, USP is chemically designated KCl, a white granular powder freely soluble in water.

  Sodium Chloride, USP is chemically designated NaCl, a white crystalline powder freely soluble in water.

    Sodium Lactate, USP is chemically designated monosodium lactate [CH3CH(OH)COONa], a 60% aqueous solution miscible in water.

It has the following structural formula:

structural formula sodium lactate

    Water for Injection, USP is chemically designated H2O.

  The flexible plastic container is fabricated from a specially formulated polyvinylchloride. Water can permeate from inside the container into the overwrap but not in amounts sufficient to affect the solution significantly. Solutions inside the plastic container also can leach out certain of their chemical components in very small amounts before the expiration period is attained. However, the safety of the plastic has been confirmed by tests in animals according to USP biological standards for plastic containers.



Source link

Back to top button