Schneider F, Falk V, Walther T, Mohr F W
Department of Cardiac Surgery, Herzzentrum, Universität Leipzig, Germany.
Ann Thorac Surg. 1998 May;65(5):1481-2. doi: 10.1016/s0003-4975(98)00041-1.
The technique of computer-aided transcranial Doppler echography for continuous control of cerebral perfusion during minimally invasive mitral valve operations using the Port-Access system is described. Temporary displacement of the endoclamp in the aortic arch (brachiocephalic trunk, left carotid artery) is followed by cerebral embolic signals and a sudden decrease in the blood flow velocity in the middle cerebral arteries.
