https://www.selleckchem.com/products/Rolipram.html The corpus callosum was affected in ten (71,4%), internal capsule in five (35,7%), and midbrain/pons in six (42,8%) patients. We showed distinct patterns of diffuse brain SWI susceptibilities in critically-ill patients who underwent mechanical ventilation/ECMO. The etiology of these foci remains uncertain, but the association with mechanical ventilation, prolonged respiratory failure, and hypoxemia seems probable explanations. We showed distinct patterns of diffuse brain SWI susceptibilities in critically-ill patients who underwent mechanical ventilation/ECMO. The etiology of these foci remains uncertain, but the association with mechanical ventilation, prolonged respiratory failure, and hypoxemia seems probable explanations. During the COVID-19 pandemic, healthcare professionals are recommended to use PPE to prevent the transmission of disease. Healthcare workers who use N95 FFR, which has an important place, experience complaints such as headache and dizziness. In this study, we plan to find the cause of these complaints and aim to clarify whether they are associated with the use of N95 mask. Healthcare workers first put on a surgical mask for at least 1h and a maximum of 4h, this process was then repeated on another day with the same workers wearing N95 masks. After removing the mask, capillary blood gases were taken and a questionnaire was given. Thirty-four participants over the age of 18 were included in the study; 19 participants were female (56%) and 15 male (44%). The results of the capillary blood gas analysis after the use of surgical mask and N95 mask, respectively pH 7.43 ± 0.03; 7.48 ± 0.04 (p < 0.001); pCO 37.33 ± 8.81; 28.46 ± 7.77mmHg (p < 0.001); HCO 24.92 ± 2.86; 23.73 ± 3.29mmol/L (p = 0.131); Base excess (BE) 1.40 (-3.90-3.10); -2.68 (-4.50-1.20) [median (Q1-Q3)] (p = 0.039); lactate 1.74 ± 0.68; 1.91 ± 0.61 (p = 0314). Headache, attention deficit and difficulty in concentrating were significant