Patient-ventilator synchronization during non-invasive ventilation

 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 [1] to assess performance of a software for automatic scoring developed by Breas Medical.

Fig. 1. Team of the Pneumology Unit Care of the Corporació Parc Tauli (Manel Lujan, 2nd row, right)

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 P_aw and belt waveforms B_thorax and B_abdom 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 r_p = 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 f_s = 64 Hz. Details of the patients are reported in Table 1. and in Ref. [1].

 The datasets

These datasets with a line with four real values : the so-called Expiratory Positive Airway Pressure P_l (in cmH₂O), the Inspiratory Positive Airway Pressure P_h (in cmH₂O), the backup frequency f_Bck (in breath per min) and the leakage threshold (in l.s^-1) beyond which cycles were discarded in the pilot study [1].Then, four columns for the pressure P (in cmH₂O), the flow Q (in l.s^-1), the thoracic belt B_thorax and the abdominal belt B_abdom, respectively. The sampling frequency f_s is 64 Hz.

Please, do not use these datasets without quoting Ref. [1].

• Female, BMI = 26, Restrictive with a Breas Vivo 40

  

  Patient 1

• Female, BMI = 34, obesity hypoventilation syndrome with a ResMed Lumis 150

  

  Patient 2

• Female, BMI = 30, Restrictive with a Breas Vivo 40

  

  Patient 3

• Female, BMI = 37, Chronic obstructive pulmonary disease with a ResMed Lumis 150

  

  Patient 4

• Male, BMI = 28, Chronic obstructive pulmonary disease with a ResMed Lumis 150

  

  Patient 5

• Male, BMI = 23, Chronic obstructive pulmonary disease with a ResMed Lumis 150

  

  Patient 6

• Female, BMI = 22, amyotrophic lateral sclerosis with a Respironics Trilogy

  

  Patient 7

• Female, BMI = 78, amyotrophic lateral sclerosis with a ResMed Astral 150

  

  Patient 8

• Female, BMI = 22, amyotrophic lateral sclerosis with a Breas Vivo 40

  

  Patient 9