Which type of sleep apnea is characterized by lack of airflow due to pharyngeal occlusion?
a) Simple
b) Central
c) Mixed
d) Obstructive
Answer: d) Obstructive
Explanation:
Obstructive sleep apnea occurs usually in men, and especially in men who are older and overweight. Types of sleep apnea do not include a simple characterization. Mixed sleep apnea is a combination of central and obstructive apnea with one apneic episode. In central sleep apnea, the patient demonstrates simultaneous cessation of both airflow and respiratory movements. pg.553
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