Insuficiência Aórtica que afeta o fluxo de Carótidas

Beto Matos-Souza
Figure thumbnail gr1
Serial duplex scans of right CCA. Although carotid flow pattern was normal after previous aortic surgery (A), diastolic flow was reversed before aortic valve surgery (B). After aortic valve replacement, diastolic flow pattern was normalized (C). RT, ; CCA, right common carotid artery.

https://doi.org/10.1016/j.jtcvs.2008.01.010

In the present case, duplex sonography, magnetic resonance angiography, and single photon emission computed tomography findings indicated the 3 following facts in addition to diastolic reverse flow. (1) Reverse diastolic flow reduced total antegrade flow in the right carotid arteries. (2) The right middle cerebral artery received its blood flow from only the right internal carotid artery without any collateral supply. (3) The right middle cerebral artery territory was subject to ischemia with its depressed flow reserve

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