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Near‐infrared spectroscopy changes during hypothermic circulatory arrest with retrograde cerebral perfusion
Author(s) -
Rigg C. D.,
CluttonBrock T. H.
Publication year - 1997
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.1997.98-az0094a.x
Subject(s) - medicine , circulatory system , perfusion , cerebral perfusion pressure , aneurysm , deep hypothermic circulatory arrest , anesthesia , cardiopulmonary bypass , cardiology , surgery
We report on the changes in cerebral near‐infrared spectroscopy during grafting of a thoraco‐abdominal aneurysm. A 58‐year‐old man presented with a complex dissecting aortic aneurysm. Repair of the aneurysm was performed under hypothermic circulatory arrest with retrograde cerebral perfusion. Cerebral near‐infrared spectroscopy monitoring revealed a reduction in the values recorded for total haemoglobin, oxygenated haemoglobin and cytochrome aa3 along with an increase in deoxygenated haemoglobin during circulatory arrest. When retrograde cerebral perfusion was commenced the signals representing total haemoglobin, oxygenated haemoglobin and cytochrome aa3 were all restored to near baseline values. Deoxygenated haemoglobin, however, remained elevated. These changes support the hypothesis that some cerebral perfusion occurs during retrograde cerebral perfusion.