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Aim: This study aims to reveal the relationship between Pulmonary Function Tests (PFTs) parameters and polysomnographic parameters. It aims to determine the guiding values in treatment selection, with the hypothesis that easily accessible PFTs parameters can be useful in clinical evaluation for patients with restrictive or obstructive type disorders. Material and Method: One hundred and forty-six patients with obstructive and/or restrictive pulmonary dysfunction who underwent polysomnography in the sleep clinic of our hospital between June 2019 and December 2019 were included in the study. Polysomnography (PSG) parameters and PFTs results were obtained. Age, gender, body mass index (BMI), Epworth Sleepiness Scale (ESS) score, PFTs parameters, apnea-hypopnea index (AHI), nocturnal oxygen saturation, tolerable positive airway therapy modality, and pressures were recorded. Results: Of 146 patients 34.9% were women and most (92.5%) had an obstructive disorder in PFTs. Of the patients with the obstructive disorder, 71 were being followed up with a diagnosis of chronic obstructive pulmonary disease (COPD) and 64 with a diagnosis of asthma. Interstitial lung disease was observed in 5 out of 11 cases (7.5%) with restrictive type disorder, and obesity resulted in restrictive disorder for the remaining 6 cases. Simple snoring was observed in 5.5%. Mild OSAS was observed at a rate of 30.1%. Moderate-severe OSAS was detected in 64.4% of the patients. When the relationship between optimal inspiratory/ expiratory positive airway pressure (IPAP/EPAP) values determined by automatic bilevel positive airway pressure (ABPAP) titration and PFTs parameters were analyzed, a moderate negative correlation was observed between IPAP value and forced vital capacity (FVC) (L) (r=-0.432, p=0035) Discussion: The results of this study show that PFTs parameters can be used to predict polysomnographic findings for patients with obstructive/ restrictive disorders. Almost two-thirds of the patients with obstructive sleep apnea (OSA)-related symptoms in this group were observed to have moderate-severe obstructive sleep apnea syndrome (OSAS). Based on our results in ROC analysis, we believe that it would be appropriate to recommend titration with bilevel devices, especially for patients with forced expiratory volume in one second (FEV1)

Aim: Obstructive sleep apnea syndrome (OSAS) and chronic obstructive pulmonary disease (COPD) have common pathophysiological mechanisms affecting the prognosis of each other. This study aims to investigate the relationship between the presence of OSA risk and the severity of COPD and to determine the possible clinical features for OSA risk for COPD patients. Material and Method: The patients (n=181) who applied to the outpatient clinics of pulmonology between September - November 2019 with the diagnosis of COPD, were analyzed cross-sectionally. Demographic features, anthropometric measurements, comorbidities, smoking status, and severity of dyspnea, respiratory functions, and exacerbation frequency in the last year were evaluated. All patients were questioned with the Epworth sleepiness scale (ESS) for detecting excessive daytime sleepiness (EDS), and the STOP-Bang for determining the risk of OSA. Results: The rate of diabetes, waist and hip circumference measurements, median ESS score, and EDS ratio were found to be higher in patients with moderate/high OSA risk when compared to patients with low OSA risk. In the multivariate regression model; lower oxygen saturation (OR: 0.83; p=0.007) and higher ESS score (OR=1.28; p

The Lung Science Conference (LSC) and the Sleep and Breathing Conference (SBC) are two conferences organised by the European Respiratory Society (ERS), the latter held in association with the European Sleep Research Society. This year, the LSC and SBC were both held in a virtual format with the participation of researchers and clinicians from around the world. The participation of Early Career Members (ECMs) was notable in both events: 216 of 363 (60%) delegates attending the LSC were under 40 years old, and 315 of 920 (34%) delegates were ≤40 years of age at the SBC. Both conferences included outstanding talks on the most recent advances in respiratory medicine and science, oral/poster communication sessions on novel research, exciting opportunities to network with peers, and much more!, This article provides a brief description of some of the most remarkable sessions of the @EuroRespSoc Lung Science Conference and the Sleep and Breathing Conference 2021 and presents the new incoming members of the ECMC (@EarlyCareerERS) https://bit.ly/2RSDP40

Objectives: The most common opinion about apnea/hypopnea formation in restrictive pulmonary diseases is based on decreased lung volumes causing upper airway collapse. This study targets to reveal some evidence for this pathophysiological pathway in patients with idiopathic pulmonary fibrosis (IPF) and obstructive sleep apnea (OSA). Methods: The clinical, demographical, and polysomnographic characteristics of 19 patients with OSA and IPF who underwent all-night polysomnography (PSG) were retrospectively evaluated for investigating the correlations between lung volumes calculated on the images of high-resolution computed tomography (HRCT) and polysomnographic findings. Supine HRCT images performed at the time of diagnosis of IPF were used for the calculation of total lung volume and low attenuation areas of the lung (LAA). The results were compared with the results of the PSG and pulmonary function tests (PFT). Results: The study group comprised 19 patients (3 female, 16 male) with a median apnea-hypopnea index (AHI) of 23.5/h. AHI in this IPF cohort was not correlated with body-mass index, neck circumference, age, or PFT. However, overall AHI and non-rapid eye movement (non-REM) AHI had a trend of positive correlation with LAA. We also showed a positive correlation between the LAA and forced vital capacity (FVC) (r=0.682 and, p = 0.003). Conclusions: The severity of OSAS in IPF patients is well correlated with LAA. This result supports the gravitational and the volumetric effect of the lung in apnea-hypopnea formation.

OBJECTIVES: Coincidance of idiopathic pulmonary fibrosis (IPF) and the obstructive sleep apnea syndrome (OSA) may have important effects on the pathogenesis of each other. Our aim is to define clinical characteristics of patients with IPF and OSA and to identify a combined index to determine the severity of both diseases together. MATERIALS AND METHODS: The clinical and polysomnographic characteristics of 22 patients with OSA and IPF who underwent nocturnal polysomnography (NPSG) were retrospectively evaluated and compared with 23 OSA patients without any other pulmonary comorbidities. RESULTS: We demonstrated high frequency of OSA within our study group (94,7%) all of whom had at least one of the majör symptoms of OSA. Lower AHI, lower neck circumference, higher percentage of deep sleep (nREM3) and less comorbidities were observed in the study group when compared to OSA with no other pulmonary comorbidities (p