Manifestations | - Continuous elevated airway pressure on gauge
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- Recent increase in PEEP setting
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- Hyperinflated reservoir bag
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- Recent conversion from facemask to ETT or LMA
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Potential causes | |
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- Obstruction of expiratory limb of breathing system
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- Obstructed breathing system exhaust
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- APL valve closed or obstructed
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- Ventilator relief valve closed or obstructed
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- Tubing obstruction between relief valve(s) and scavenger
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- Scavenger system outflow obstruction
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- Low scavenger outflow with blocked safety valve
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Suggested responses | - Disconnect patient from breathing system
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- Turn down fresh gas flow rate
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- Verify scavenger system operational
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