Fig. 4From: Accuracy of delivered airway pressure and work of breathing estimation during proportional assist ventilation: a bench studyCorrelation between the total work of breathing calculated by the ventilator (\({\text{WOB}}_{{{\text{tot}}_{\text{displayed}} }}\)) and the corresponding calculated by Campbell (\({\text{WOB}}_{{{\text{tot}}_{\text{real}} }}\))Back to article page