Article Figures & Data
Figures
- Fig 1.
Schematic of the four aneurysms surgically created in one dog. A indicates arterial-stump aneurysm; B, bifurcation aneurysm; C, side-wall aneurysm; and D, small branch-artery aneurysm. CTA indicates cranial thyroid artery; SCA, subclavian artery; and VA, vertebral artery.
- Fig 2.
Digital subtraction angiogram shows the innominate artery. Left CCA is ligated proximally and divided just above the proximal ligature. Stump of the left CCA is shown as an aneurysmal pouch (asterisk).
- Fig 3.
Bifurcation aneurysm is created by using a venous pouch of external jugular vein after a partial end-to-side anastomosis of the left CCA to the proximal part of the arteriotomy of the right CCA. Side-wall aneurysm is created by using a venous pouch of the external jugular vein with slight oblique orientation, and a small branch-artery aneurysm is created by using a venous pouch of the anterior facial vein at the junction of the CCA and cranial thyroid artery (asterisk).
A, Intraoperative view.
B, Digital subtraction image.
Tables
Aneurysm Operation Method Pouch Diameter (mm) Aneurysm Simulateda Arterial-stump Division of L CCA, far proximal CCA stump (artery) ≤10 to 10–25 Any sidewall or terminal-artery aneurysm Bifurcation Side-to-end anastomosis CCA to ipsilateral CCA, plus aneurysmal pouch Vein/artery ≤10 to 10–25 Basilar apex, MCA bifurcation, terminal ICA, other Side-wall CCA plus aneurysmal pouch Vein/artery ≤10 to 10–25 ICA aneurysm (eg, paraopthalmic), supraclinoid segment Side branch-artery CCA, cranial thyroidal branch; junction plus aneurysm pouch Facial vein or artery ≤10 SCA, AICA, PICA aneurysm, other small aneurysm a AICA indicates anterior inferior cerebellar artery; ICA, internal carotid artery; MCA, middle cerebral artery; PICA, posterior inferior cerebellar artery; and SCA, superior cerebellar artery.
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