Quark pft with x9 pneumotach

All patients underwent standard pulmonary function testing (PFT) (with a Quark PFT with X9 pneumotach, COSMED srl, Roma, Italy) for forced expiratory volume in one second (FEV1), vital capacity (VC), forced vital capacity (FVC), DLCO and total lung capacity (TLC). DLCO and TLC were determined by the single-breath carbon monoxide technique. The examination was performed on the same day of the visit.

All patients underwent standard pulmonary function testing (PFT) with a Quark PFT with X9 pneumotach (COSMED) for forced expiratory volume in 1 second (FEV₁), vital capacity, forced vital capacity (FVC), D_lco, D_lco constant, and total lung capacity. D_lco and total lung capacity were determined by the single-breath co technique. The hemoglobin value was evaluated before PFT to apply the appropriate correction to D_lco.
The spirometer underwent calibration the day the test was performed, and barometric pressure and temperature were simultaneously recorded. A trained technician coached the patient, while a pulmonologist (E. C., E. P., or F. P.) was responsible for test validation and interpretation based on the 2005 the American Thoracic Society and European Respiratory Society statements.^{12 (link),13 (link)} Briefly, the following safety measures were adopted: in a dedicated room, a dedicated spirometer was used to avoid cross-infection of patients not included in this program. The technician (and the pulmonologist, if needed) used full PPE (ie, face mask, N95 respirator, gown, and gloves). To avoid cross-infections between patients included in the program, a mouthpiece with an antimicrobial filter was used and changed for every patient. At the end of each day, the room underwent disinfection.

All patients underwent standard pulmonary function tests (PFT) with a Quark PFT with X9 pneumotach (COSMED srl, Rome, Italy) to evaluate forced expiratory volume in 1 second (FEV1), vital capacity, forced vital capacity (FVC), diffusing capacity of the lungs for carbon monoxide (DLCO), DLCO constant, and total lung capacity. DLCO and total lung capacity were determined by the single-breath co technique.
The spirometer was calibrated on the day the test was performed and the barometric pressure and temperature were simultaneously recorded. A trained technician coached the patient, while a pulmonologist was responsible for test validation and interpretation based on the 2005 the American Thoracic Society and European Respiratory Society statements. Appropriate safety measures were adopted (including use of a dedicated spirometer to avoid cross-infection, use of a mouthpiece with a different antimicrobial filter for each patient and use of complete PPE by the staff). At the end of each day, the room underwent disinfection.