Why does the 20 mL pump require refilling nearly twice as frequently as the 40 mL pump?
The “usable reservoir volume” for all SynchroMed II pumps is the “reservoir volume” minus the “low reservoir alarm volume.” The recommended setting for the low reservoir alarm is at least 1 mL for all SynchroMed II pumps. Patients are expected to return for refill before the alarm sounds. At recommended settings, the “usable reservoir volumes” for the 40 mL and 20 mL pumps are a maximum of 39 mL and 19 mL, respectively.
