I POSTOPERATIVE CARE Intensive Care Units Calculating Total Gas Mixture Flow Rates The approximate volume of each BUSTER ICU Cage is as follows: small 50 litres, medium 120 litres and large 460 litres. Select the Venturi for the condition using diagram 1 below. Run the flow rates high initially to fill the ICU cage with oxygen enriched air at the appropriate concentration. Calculate minute tidal volume (10ml/kg x breaths per minute). Aim to change at least twice the minute tidal volume of air/oxygen mixture per minute. Calculate the oxygen flow rate using the chart below. 19643 Use of Oxygen leaflet INT 2016.indd 3 www.kruuse.com 17/03/17 12:46
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