Oxytocin preparation stability in several common obstetric intravenous solutions.

Objective: The purpose of this study was to determine the stability of oxytocin in lactated Ringer's solution and lactated Ringer's-dextrose 5% solution over a 24-hour period at 25 degrees C and over a 7-day period at 5 degrees C.

Study Design: Twenty units (2.1 microg equal 1 unit) of oxytocin were injected into 1000 mL of lactated Ringer's solution and lactated Ringer's-dextrose 5% solution.