Ambulatory Nerve Block Infusion (Baby Bottle) Preparation

Disposable elastomeric infusion pumps are used for ambulatory nerve block infusion for prolonged analgesic in selected patients population e.g. ambulatory interscalene block. Our bottles hold 250ml and infuse at a rate of 5ml / hr for about 2 days.

Two commonly used concentrations:

1. 250ml 0.2% Ropivacaine (i.e. 500mg Ropivacaine in 250ml) => draw up 50ml100ml of 1%0.5% Ropivacaine and dilute it with 200ml150ml NS

2. 250ml 0.15% Ropivacaine (i.e. 375ml Ropivacaine in 250ml)  => draw up 37.5ml75ml of 1%0.5% Ropivacaine and dilute it with 212.5ml175ml NS