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Felix Umansky

Publications and source records attributed to Felix Umansky.

22 records · Page 2Linked to original sources

Endovascular management of symptomatic vertebral artery dissection achieved using stent angioplasty and emboli protection device.

Extracranial vertebral artery (VA) dissection may lead to significant arterial stenosis, occlusion, or pseudoaneurysm formation with subsequent hemodynamic and embolic infarcts. To prevent thromboembolic complications, anticoagulation with intravenous heparin followed by oral warfarin has been recommended for all patients with acute dissections, regardless of the type of symptoms, unless there are contra-indications. Nevertheless, anticoagulation is not innocuous, may be contra-indicated or may be ineffective to prevent symptoms or dissection progression. Because it is effective and less invasive than other surgical procedures, endovascular treatment of VA dissection has recently attracted interest. We present a case of a traumatic VA dissection, presenting with multiple embolic infarctions that was managed with protected stent-assisted angioplasty. Protected stent-assisted VA angioplasty has not been previously reported and appears to be a safe, effective and immediate method of restoring vessel lumen integrity and should be considered in the therapy of selected cases of VA dissection.

Adolescent↗

Thrombosis and recanalization of symptomatic nongiant saccular aneurysm.

Complete thrombosis followed by recanalization of giant aneurysms is an infrequent process that has been exceptionally mentioned in relation to nongiant saccular aneurysms. A 25-year-old male presented with a right temporal hematoma and associated subarachnoid hemorrhage. Cerebral angiography revealed a small blister-like dilatation at the right middle cerebral artery bifurcation. The cerebral hematoma was surgically removed and a large thrombosed aneurysm was discovered and was wrapped. Follow-up angiography revealed complete recanalization of the aneurysm with preservation of all the arterial branches and the aneurysm was then completely occluded with detachable coils. This case provides insight into the well-known but poorly understood dynamic process of thrombosis and recanalization of cerebral aneurysms. The possible role of a cerebral hematoma in the pathogenesis of this process is discussed.

Adult↗

Endovascular management of spontaneous bilateral symptomatic vertebral artery dissections.

Extracranial vertebral artery (VA) dissection may lead to significant arterial stenosis, occlusion, or pseudoaneurysm formation with subsequent hemodynamic and embolic infarcts. To prevent thromboembolic complications, anticoagulation with intravenous heparin followed by oral warfarin has been recommended for all patients with acute dissections, regardless of the type of symptoms. Nevertheless, anticoagulation is not innocuous and may be associated with hemorrhagic transformation of a cerebral infarction or may be ineffective to prevent symptoms or dissection progression. We present a case of a bilateral spontaneous extracranial VA dissection presenting with multiple embolic infarctions. The dominant VA was reconstructed with multiple in-tandem stents and the contralateral VA, proved to be the source of emboli, was occluded with coils. Stent-assisted VA angioplasty has rarely been reported in the management of spontaneous dissections and appears to be a safe, effective and immediate method of restoring vessel lumen integrity and should be considered in the therapy of selected cases of VA dissection.

Adult↗