A brief description
Nine stable patients monitored under noninvasive ventilation (pressure support ventilation mode with a backup frequency) in the Pneumology Unit Care of the Corporació Parc Tauli (Sabadell, Spain) were included. The data were randomly selected from a study focused on the prevalence of asynchrony events. This study was approved by the local ethics commitee of Corporació Parc Tauli (CIR2010/015). Written informed consent was obtained. They were used in the pilot study  to assess performance of a software for automatic scoring developed by Breas Medical.
Each patient used a full-face mask. The waveforms were recorded in napping patients in their most comfortable supine position during the initiation of mechanical ventilation or during routine controls in a quiet room. Flow Q, airway pressure Paw and belt waveforms Bthorax and Babdom were measured. The data were acquired using an external polygraph (Powerlab 16Sp, AD Instruments, Sydney, Australia), equipped with a pressure transducer (model 1050, ADInstruments, Sydney, Australia), a pneumotachograph (model S300, instrumental dead space 70 ml, resistance rp = 0.0018 cmH2O/l/s, AD Instruments, Sydney, Australia), both inserted in the ventilation circuit close to the mask, and respiratory inductance plethysmography belts (Pro-tech, Canada). The polygraph was connected to a computer equipped with data acquisition software (Chart 7.0, AD Instruments, Sydney, Australia). The sampling frequency of the datasets here provided is fs = 64 Hz. Details of the patients are reported in Table 1. and in Ref. .
These datasets with a line with four real values : the so-called Expiratory Positive Airway Pressure Pl (in cmH2O), the Inspiratory Positive Airway Pressure Ph (in cmH2O), the backup frequency fBck (in breath per min) and the leakage threshold (in l.s-1) beyond which cycles were discarded in the pilot study .Then, four columns for the pressure P (in cmH2O), the flow Q (in l.s-1), the thoracic belt Bthorax and the abdominal belt Babdom, respectively. The sampling frequency fs is 64 Hz.
 C. Letellier, M. Lujan, J.-M. Arnal, A. Carlucci, M. Chatwin, B. Ergan, M. Kampelmacher, J. H. Storre, N. Hart, J. Gonzalez-Bermejo & S. Nava, Patient-ventilator synchronization during non-invasive ventilation : a pilot study of an automated analysis system, Frontiers in Medical Technology. Diagnostic and Therapeutic Devices, 3, 690442, 2021. Online