Negative airway pressure alarm

Manifestations	Airway pressure less than zero
Manifestations	Collapsed reservoir bag or bellows
Potential causes	Patient factors
	Patient generated inspiratory pressure with empty reservoir bag or ventilator bellows
	Equipment factors
	Suction applied below airway
	Gastric tube in trachea
	Tracheal/bronchial suction (eg, fiberoptic)
	Suction applied above airway
	Malfunctioning scavenger system
Suggested responses	Immediately disconnect airway from breathing system
Suggested responses	Fill breathing system with oxygen flush or high fresh gas flows

Graphic 113675 Version 1.0

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