Supplemental oxygen delivery

特許 権利維持 Many patients require only a supplementary level of oxygen in the room air they are breathing, rather than pure or near pure oxygen,[12] and this can be delivered through a number of devices dependent on the situation, flow required and in some instances patient preference. A nasal cannula (NC) is a thin tube with two small nozzles that protrude into the patient's nostrils. It can only comfortably provide oxygen at low flow rates, 2–6 litres per minute (LPM), delivering a concentration of 24–40%.