Hemodynamic assessment of the spinal cord arteriovenous malformation with intraoperative microvascular Doppler ultrasound: case report.
Microvascular Doppler recordings were taken from the nidus and draining system of a dural spinal cord arteriovenous malformation during operative treatment. Doppler signals readily showed the direction of blood flow in the draining vein and the hemodynamic effects of surgical maneuvers. Recording during alterations of mean arterial blood pressure and partial carbon dioxide pressure (pCO2) demonstrated lack of autoregulation and impaired CO2 reactivity in the AVM nidus. Microvascular Doppler techniques provide useful intraoperative assessment of the hemodynamics of arteriovenous malformations of the spinal cord.
Giller
C A
CA
Department of Neurological Surgery, University of Texas Southwestern Medical School, Dallas.
Meyer
Y J
YJ
Batjer
H H
HH
D001165:Arteriovenous Malformations / Q000503:physiopathology / Q000601:surgery*; D001783:Blood Flow Velocity; D001794:Blood Pressure; D002245:Carbon Dioxide; D006439:Hemodynamics; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008833:Microcirculation; D008875:Middle Aged; D010313:Partial Pressure; D011674:Pulse; D013116:Spinal Cord / Q000098:blood supply*; D014463:Ultrasonography
D002245:Carbon Dioxide