Manifestations | |
Potential causes | |
- Patient apnea (no respiratory effort)
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- Capnometer sample line crack or disconnect
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- Exhaled gas exiting breathing system before sampling site
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- Large cuff leak (no exhaled gas into breathing system)
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- Lower airway suction (gastric tube in trachea, tracheal/bronchial suction)
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- Breathing system disconnect
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- Breathing system obstruction
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- Airway (ETT or LMA) obstruction
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- Ventilator turned off or cycling failure malfunction
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Suggested responses | - Check circulation (electrocardiogram and plethysmogram)
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- Determine whether patient ventilation is occurring (examine chest, auscultate lungs, check respiratory monitors, check SpO2)
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- Rule out esophageal intubation if recently intubated
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- Look for breathing circuit disconnection or obstruction
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- Verify that ventilator is operating
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- Switch to manual ventilation
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- If necessary, ventilate with manual resuscitation device connected to O2
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