Document Type : Original Article
Associate Professor, Department of Intensive Care Nursing, School of Nursing and Midwifery, Qazvin University of Medical Sciences, Qazvin, Iran
Assistant Professor, Department of Emergency Medicine, School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
Anesthesiologist, Associated Professor, Qazvin University of Medical Sciences, Qazvin, Iran
Master of Intensive Care Nursing, Qazvin University of Medical Sciences, Qazvin, Iran
Background: Assessing patients’ readiness for weaning through spontaneous breathing trial (SBT) is a reliable method for improving weaning and extubation outcomes. Until now, there are controversies over the best SBT method.
Objective: This study aimed to compare the clinical outcomes of the T-piece and pressure support ventilation (PSV) SBT methods among patients with traumatic brain injury.
Methods: In this randomized controlled trial, 72 patients under mechanical ventilation were purposively recruited from the intensive care unit of Shahid Rajaei hospital, Qazvin, Iran, and randomly allocated to an intervention and a control group. SBT was conducted in the intervention and control groups through the T-piece and PSV (with pressure support of less than 8 cm H2O), respectively. The groups were compared with each other respecting weaning outcomes, extubation success, length of mechanical ventilation, length of hospital stay, and mortality rate. Data were compared using the Chi-square and the independent-sample t-tests.
Results: Weaning success rate in the T-piece group was significantly greater than the PSV group (P=0.024), while the post-weaning length of hospital stay in the T-piece group was significantly shorter than the PSV group (P=0.05). There were no significant differences in respecting extubation success rate and length of mechanical ventilation between the groups (P>0.05).
Conclusion: The T-piece method for SBT could be better tolerated by patients with traumatic brain injury compared with PSV.