Figure 4From: Pupillary reflex measurement predicts insufficient analgesia before endotracheal suctioning in critically ill patientsReceiver operating curves for the prediction of an insufficient analgesia level before endotracheal suction by the measurement of the pupil diameter variations during 40 measurements in 34 critically ill patients after a 10, 20 or 40 mA tetanic stimulation. Insufficient analgesia was defined by an increase ≥1 on the Behavioral Pain Scale (A) or in the Richmond Agitation Sedation Scale (B).Back to article page