Progressive improvement of apnea index and ventilatory response to CO2 after tracheostomy in obstructive sleep apnea syndrome.


In order to determine whether reversible alterations in ventilatory control are found in obstructive sleep apnea syndromes, 5 male patients 31 to 57 yr of age presenting with the syndrome were polygraphically monitored before and several times during the 6 months after tracheostomy. They also had a hypercapnic ventilatory response study before surgery and… (More)


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