Neurosurgical operations with the patient in sitting position: analysis of risk factors using transcranial Doppler sonography Engelhardt M , Folkers W , Brenke C , Scholz M , Harders A , Fidorra H , Schmieder K British Journal of Anaesthesia Volume 96, Issue 4, Pages 467-472 (April 2006) DOI: 10.1093/bja/ael015 Copyright © 2006 British Journal of Anaesthesia Terms and Conditions
Fig 1 Detection of HITS on scanning the left middle cerebral artery by TCD. The upper frame shows single HITS (arrows). The lower frames indicate timing of injection of contrast agent (arrows) and the presence of several HITS (arrows). British Journal of Anaesthesia 2006 96, 467-472DOI: (10.1093/bja/ael015) Copyright © 2006 British Journal of Anaesthesia Terms and Conditions
Fig 2 Optimized sitting position—the legs are elevated to the level of the heart. British Journal of Anaesthesia 2006 96, 467-472DOI: (10.1093/bja/ael015) Copyright © 2006 British Journal of Anaesthesia Terms and Conditions