pulmonary disorders
Central Sleep Apnea
Diagnosis of Central Sleep Apnea
Clinical evaluation Often polysomnography Diagnosis of CSA is based on clinical findings and, when necessary, confirmed by sleep testing at home with portable equipment or in a sleep laboratory using Testing . However, testing may not be necessary if the cause is evident and reversible (eg, travel to high altitude, To diagnose central nervous system causes of apnea with hypercapnia, brain or brain stem imaging may be indicated. Arterial blood gases and bicarbonate levels during wakefulness are helpful to distinguish hypercapnic from hypocapnic pathophysiology. 