Effect of Adaptive Support Ventilation and Different Spontaneous Respiratory Trials on Quiting Respiratory Mechanics Parame-ters of Patients
Abstract：Objective To investigate the effect of spontaneous breathing trials (SBT) and adaptive support ventilation (ASV) on re-spiratory mechanics parameters to guide to quit the use of mechanics.Methods 32 patients who were ready for weaning were enrolled. All patients underwent three methods:ASV, low level pressure support ventilation ( PSV,7 cm H2 O) and T-piece.Each breathing trials continued for 20min, the respiratory mechanics parameters included: tidal volume(TV), breathing rate(RR),blood oxygen saturation (SaO2),airway occlusion pressure(P0.1), maximal inspiratory mouth pressure(Pimax) and rapid shallow breathing index(RSBI)were measured before each trial.Their differences between spontaneous breathing trials and ASV were compared .Results 30 patients success-fully completed different breathing methods .Compared with the T-piece,P0.1 ,Pimax,RSBI and RR in the patients using low level PSV and ASV were significantly decreased while VT and SaO 2 increased .The difference of each parameter in the low level PSV group and ASV had statistical significance compared with T -piece group ( P<0.05 ) .Compared with the low PSV group , P0.1 , VT in ASV group elevated while RR reduced.The difference between two groups were statistically significant ( P<0.05 ).Conclusion For ventilation patients in weaning process with spontaneous breathing trial ,low levels of PSV and ASV are better than T -piece,and the ASV group has more advanta-ges.It has certain guiding significance for clinic.
Keywords：ASVMechanical ventilationPressure support ventilationSpontaneous respiratory trial
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 16-18 )