Figure 3From: The sitting position during neurosurgical procedures does not influence serum biomarkers of pulmonary parenchymal injury Surfactant protein D (SP-D) and Clara cell protein (CC16) concentration in patients operated in the sitting position with vs. without intraoperative air embolism (VAE). The horizontal line represents the median; the box encompasses the 25th - 75th percentiles (the interquartile range, IRQ), and the whiskers show upper and lower quartiles.Back to article page