APNEA-SNORING.COM 

THE WEBSITE OF ALLEN J. MOSES, DDS

SEARS TOWER - CHICAGO

CENTRAL SLEEP APNEA

Central apnea results when the brain fails to signal the chest muscles to breathe. A defect in the metabolic control center does not respond properly to carbon dioxide in the blood and shuts down the breathing effort. A 10 second or greater episode of no ventilatory effort and no consequent air flow defines central apnea. Central apneas cause arousals from sleep. In the temporarily awake state normal respiratory effort resumes.

Figure 3
Figure 3
 
Virtually no chest effort, no abdominal effort and no airflow characterize a central apnea.  The brain alone initiates this apnea, in this case approximately 14 seconds in duration.  The blue highlighted area identifies a 3% desaturation of blood oxygen from 95% to 92%.
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