Forced Inspiratory Flow Volume Curve in Patients with Obstructive Sleep Apnea-Hypopnea Syndrome

Objective: Obstructive sleep apnea-hypopnea syndrome (OSA) is a disease of obstructive apnea or hypopnea caused by repeated partial complete collapse the upper airway during sleep. The inspiratory part flow-volume curve (F-V curve) can be used as an auxiliary means to evaluate obstruction in adults. This study ability F-V predict OSA and explore indicators related Methods: There were 332 patients included this cross-sectional study, who accompanied snoring, daytime sleepiness other symptoms, with suspicion OSA. According nocturnal polysomnography, subjects distributed into mild moderate group, severe group non-OSA group. A pulmonary function test was collect subjects’ spirometry curves. Results: no significant difference variety indices derived from between normal subjects, including 25% flow rate, middle 75% peak forced rate first second. parameters significantly correlated weight, age sex subjects. Conclusion: These findings suggest that cannot abnormalities syndrome.