Why T Tube Did Not Impair Arterial Oxygenation Essay

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When T-tube and CPAP were compared in the Study (108), it showed that use of T-tube did not impair arterial oxygenation. Further it showed that extubation with T-tube could be superior to CPAP when the pattern of change in PaO2/FiO2 was taken into consideration to predict extubation outcome. The PaO2/FiO2 showed an initial decline and then increasing trend in case of T-tube whereas it had a declining trend in CPAP group. Study by Cekmen N et al. had contrary result showing the number of unsuccessful weaning being higher in T-tube group as compared to CPAP group. However the hemodynamic parameters and arterial blood gases analysis was comparable within and in between CPAP and T-tube group (113).
K Manjush et al. did a prospective, observational study on 75 patients to evaluate weaning trials in relation with mean arterial pressure, RR, arterial blood gases and successful extubation. The comparison was done between PS, T-tube and CPAP. Based on their study it was concluded that the observed parameters were comparable with no significant difference between the effects of PS, CPAP and T-tube trials (p>0.05) (114).

However there appears to be no difference in both the percentage of patients who pass SBT or the percentage of patients successfully extubated when a T-tube is compared with the use of low level of PSV such as 5-7 cm H2O (63,115).
In a large multicenter randomized controlled trial, although the proportion of patients failing the SBT with T-tube was higher that

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