A total of 101 children with osa had preoperative and postoperative psg. Thus, obstruction of the upper airway is part of the mechanism of central apnea, and one patient can manifest mixed, central, and obstructive events during a single night. Obstructive apnea cessation of airflow in the upper airways in the presence of active respiratory movements. Rather, it includes 2 groups of patients that are clinically and. Central sleep apnea csa is characterized by a lack of drive to breathe during sleep, resulting in repetitive periods of insufficient ventilation and compromised gas exchange. Central apneas occur when there is a fluctuation of paco 2 below the apneic threshold this is more likely when paco 2. The findings indicate that the central sleep apnea syndrome is not a homogeneous disease entity. Apneas e infecciones en lactantes neumologia pediatrica.
In contrast to obstructive sleep apnea osa, in which ongoing respiratory efforts are observed, central apnea is defined by a lack of respiratory effort during cessations of airflow. Central sleep apnea csa is characterized by a lack of drive to breathe during sleep, resulting in insufficient or absent ventilation and compromised gas exchange. Pdf central sleep apnea pathophysiology and treatment. Ventilatory control wakeful breathing is controlled by 2.
Criteria for diagnosis of central sleep apnea csa was cai greater than 1. Changes in central apnea index following pediatric. Apnea may be central, obstructive or mixed depending on the presence of air flow through the upper airways. The preponderance of evidence on the treatment of csas supports the use of continuous positive airway pressure cpap. Central apnea was defined as the absence of both inspiratory effort and chest wall movement lasting longer than 20 seconds. Learn more about causes, types, risk factors, symptoms, diagnosis.
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