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  Indian J Med Microbiol
 

Figure 1: (a) Ventilator continues to ventilate even with selector switch turned to open circuit. (b) Note fraction of inspired oxygen display of 21% even though oxygen flow is turned on. (c) Ventilator operating in closed circuit (d) with oxygen flow turned on. Note the fraction of inspired oxygen display of 98%

Figure 1: (a) Ventilator continues to ventilate even with selector switch turned to open circuit. (b) Note fraction of inspired oxygen display of 21% even though oxygen flow is turned on. (c) Ventilator operating in closed circuit (d) with oxygen flow turned on. Note the fraction of inspired oxygen display of 98%