Rapid shallow breathing index

Epstein SK. Etiology of extubation failure and the predictive value of the rapid shallow breathing index. Am J Respir Crit Care Med 1995 152(2) 545—549. 

Meade et al. (31) noted that the best predictors of successfiil extubation were respiratory rate <38 breaths/min (sensitivity, 88% specificity, 47%), rapid shallow breathing index < 105 breaths/L/min (sensitivity, 65-96% specificity, 0-73%), and Po.i/Pimax <0.09 (sensitivity, 69% specificity, 96%). Except for the maximal occlusion pressure most parameters achieved... 

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