title: Spectral analysis of the RR series and the respiratory flow signal on patients in weaning process.
abstract: A considerable number of patients in weaning process have problems to keep spontaneous breathing during the trial and after it. This study proposes to extract characteristic parameters of the RR series and respiratory flow signal according to the patients' condition in weaning test. Three groups of patients have been considered: 93 patients with successful trials (group S), 40 patients that failed to maintain spontaneous breathing (group F), and 21 patients who had successful weaning trials, but that had to be reintubated before 48 hours (group R). The characterization was performed using spectral analysis of the signals, through the power spectral density, cross power spectral density and Coherence method. The parameters were extracted on the three frequency bands (VLF, LF and HF), and the principal statistical differences between groups were obtained in bands of VLF and HF. The results show an accuracy of 76.9% in the classification of the groups S and F.
authors.affiliation: Dept. ESAII, Universitat Politècnica de Catalunya (UPC), Spain. Andres.Arcentales@upc.edu
authors.forename: Andrés
authors.initials: A
authors.lastname: Arcentales
authors.forename: Beatriz F
authors.initials: BF
authors.lastname: Giraldo
authors.forename: Pere
authors.initials: P
authors.lastname: Caminal
authors.forename: Iván
authors.initials: I
authors.lastname: Diaz
authors.forename: Salvador
authors.initials: S
authors.lastname: Benito
mesh_terms: D000465:Algorithms; D004562:Electrocardiography / Q000379:methods; D006801:Humans; D016014:Linear Models; D015233:Models, Statistical; D015203:Reproducibility of Results; D012119:Respiration; D012121:Respiration, Artificial; D012131:Respiratory Insufficiency / Q000628:therapy*; D012143:Respiratory Physiological Phenomena; D056152:Respiratory Rate; D012815:Signal Processing, Computer-Assisted; D015300:Ventilator Weaning / Q000295:instrumentation / Q000379:methods*; D014939:Work of Breathing