Spontaneous breathing test | definition of spontaneous breathing test by Medical dictionary
spontaneous breathing test
spontaneous breathing test,
Temporary cessation of mechanical ventilation while a patient remains intubated with a t-tube in place. An SBT is said to be successful when a patient maintains an oxygen saturation of 88% or more; with an FiO2 of 50% or less, f/VT (rapid shallow breathing index) < 105, and a positive end-expiratory pressure (PEEP) of 8.0 cm of water or less. When this occurs, the patient may be safely extubated. Synonym: spontaneous breathing trial
References in periodicals archive
(20) In a multicenter study conducted in 2006 by Frutos-Vivar et al in 900 patients who passed a spontaneous breathing test
, the authors identified that a high positive fluid balance and the presence of pneumonia as the main reasons for requiring MV were the main factors associated with failed extubation.
Subjects in the CR group sat on the chair quietly and took spontaneous breathing test
for 15 minutes at their regular breathing pace following standard protocols.