Sum

FIGURE 5 This 180-second epoch shows the patient stabilized in non-rapid eye movement stage 2 sleep now using the Adaptive Servo Ventilator (ASV) device. Note the subtle alterations in the ASV pressure (P) as the abdominal excursion is reduced or increased. The ASV P falls during increased abdominal effort and vice versa to create a more uniform breathing pattern. Abbreviations: ABD, abdominal plethysmogram; ASV P, mask pressure from ASV device; C4-A1, right central-left reference EEG; CZ-OZ, midline central-occipital EEG; ECG, electrocardiogram; EEG, electroencephalogram; EMG, electromyogram; Fpz-Cz, midline fronto-parietal-central EEG; HR, heart rate; LOC and ROC, left and right outer canthi (eye movements), respectively; Nasal P, nasal pressure via transducer; RC, rib cage plethysmogram; Sono, sonogram (snoring intensity); SaO2, oxygen saturation; SUM, plethysmogram summed signal; VEST, estimated flow from device.

FIGURE 5 This 180-second epoch shows the patient stabilized in non-rapid eye movement stage 2 sleep now using the Adaptive Servo Ventilator (ASV) device. Note the subtle alterations in the ASV pressure (P) as the abdominal excursion is reduced or increased. The ASV P falls during increased abdominal effort and vice versa to create a more uniform breathing pattern. Abbreviations: ABD, abdominal plethysmogram; ASV P, mask pressure from ASV device; C4-A1, right central-left reference EEG; CZ-OZ, midline central-occipital EEG; ECG, electrocardiogram; EEG, electroencephalogram; EMG, electromyogram; Fpz-Cz, midline fronto-parietal-central EEG; HR, heart rate; LOC and ROC, left and right outer canthi (eye movements), respectively; Nasal P, nasal pressure via transducer; RC, rib cage plethysmogram; Sono, sonogram (snoring intensity); SaO2, oxygen saturation; SUM, plethysmogram summed signal; VEST, estimated flow from device.

consider treatment with BPAP with a backup rate or an ASV device. It is important to know and document coverage criteria so that the information is available to enable proper reimbursement and some formal follow-up program is encouraged. Lastly, future research should be performed to pursue ways to verify the efficacy and treatment adherence benefits with BPAP or ASV in patients with CSA or CompSA especially over the long term.

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