[Efficacies of continuous positive airway pressure on mixed sleep respiratory events in patients with sleep apnea].

Objective: To explore the efficacies of continuous positive airway pressure (CPAP) for mixed sleep apnea (MSA) events in patients with sleep apnea.

Methods: A total of 21 patients with sleep apnea whose MSA events >10 events/h on overnight polysomnography (PSG) were studied. They were selected from the Sleep Center, Guangzhou Institute of Respiratory Disease.

[Comparison of manual versus automatic titration in pressure determination for long-term therapy of continuous positive airway pressure in patients with obstructive sleep apnea hypopnea syndrome].

Objective: To compare the continuous positive airway pressure (CPAP) of automatic titration with that of manual titration.

Methods: A total of 58 patients with obstructive sleep apnea and hypopnea syndrome (OSAHS) diagnosed by overnight polysomnography at sleep center of First Affiliated Hospital, Guangzhou Medical University were studied between December 2010 and December 2012. Manual titration was performed under full polysmnography and auto-titration at home for 3-7 nights.

[Prevalence of central sleep apnea in different age groups of children with sleep apnea-hypopnea].

Objective: To explore the prevalence of central sleep apnea in different age groups of children with sleep apnea-hypopnea (SAH).

Methods: A total of 431 children with SAH diagnosed by overnight polysomnography at our Sleep Center were retrospectively studied. They were divided into 3 groups based on their ages: toddler group (1 - < 3 years old), preschool group (3 - < 6 years old) and school group (6 - < 13 years old).