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Treatment of Cerebral Vasospasm in an Infant Using a Modified Dotter Technique
Brian M. Snelling,Eric C. Peterson,Samir Sur,Sumedh S. Shah 대한뇌혈관외과학회 2017 Journal of Cerebrovascular and Endovascular Neuros Vol.19 No.1
An 8-month old female presented with spontaneous subarachnoid hemorrhage and was treated successfully with endovascular coil embolization of the ruptured aneurysm. Transcranial Doppler ultrasound performed four days later demonstrated middle cerebral artery (MCA) velocities greater than 350 cm/sec on the right and greater than 200 cm/sec on the left, despite medical management. The patient demonstrated no focal neurological deficits, though examination was limited by our patient's sedation and intubation. Angiography revealed severe vasospasm of the supraclinoid internal carotid and MCA territories, bilaterally. The vasospasm was refractory to the administration of intra-arterial verapamil. Balloon angioplasty was attempted, but the device could not be advanced safely due to the small size of the patient's vessels and the stiffness of the device. A microcatheter (0.0165'' diameter) was advanced over a J-shaped soft microwire (0.014'' diameter) to perform mechanical angioplasty in the internal carotid artery and MCA vessels bilaterally. Dramatic improvement was seen angiographically and on transcranial Doppler, and no complications were seen.
“Direct” Mechanical Thrombectomy in Acute Ischemic Stroke during Percutaneous Coronary Intervention
Vasu Saini,Marie-Christine Brunet,Samir Sur,Amer M. Malik,Priyank Khandelwal,Shashvat Desai,Robert M. Starke,Eric C. Peterson,Ashutosh P. Jadhav,Mauricio G. Cohen,Dileep R. Yavagal 대한뇌졸중학회 2020 Journal of stroke Vol.22 No.2
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Ehsan Dowlati,Kory B. Dylan Pasko,Jiaqi Liu,Charles A. Miller,Daniel R. Felbaum,Samir Sur,Jason J. Chang,Ai-Hsi Liu,Rocco A. Armonda,Jeffrey C. Mai 대한신경중재치료의학회 2021 Neurointervention Vol.16 No.3
In-stent stenosis is a feared complication of flow diversion treatment for cerebral aneurysms. We present 2 cases of patients treated with pipeline flow diversion for unruptured cerebral aneurysms. Initial perioperative dual antiplatelet therapy (DAPT) consisted of standard aspirin plus clopidogrel. At 6-month follow-up cerebral angiography, the patients were noted to have developed significant in-stent stenosis (63% and 53%). The patients were treated with cilostazol and clopidogrel for at least 6 months. Subsequent angiography at 1-year post-treatment showed significant improvement of the in-stent stenosis from 63% to 34% and 53% to 21%. The role of cilostazol as treatment of intracranial in-stent stenosis has not been previously described. Cilostazol’s vasodilatory effect and suppression of vascular smooth muscle proliferation provides ideal benefits in this setting. Cilostazol plus clopidogrel may be a safe and effective alternative to standard DAPT for treatment of in-stent stenosis following flow diversion and warrants further consideration and investigation.