1.Dual Mechanical Thrombectomy for Recanalization of a Resistant Acute Posterior Circulation Stroke.
Ahmet PEKER ; Ayça AKGOZ ; Ethem Murat ARSAVA ; Mehmet Akif TOPÇUOGLU ; Anil ARAT
Journal of Cerebrovascular and Endovascular Neurosurgery 2017;19(2):96-100
A 71-year-old man with acute basilar artery occlusion was referred for endovascular treatment 6 hours after the onset of stroke with a Glasgow Coma Score of 3 and National Institutes of Health Stroke Scale of 27. A cerebral arteriogram revealed occlusion of the left vertebral artery proximally and thromboembolic occlusion of the basilar tip. Direct aspiration and mechanical thrombectomy with various stent retrievers failed to reconstitute arterial flow in the basilar artery. Thrombolysis in cerebral infarction 2b recanalization was achieved only after placement of double Catch Mini stent retrievers through 2 microcatheters, on both side branches of the basilar bifurcation in a kissing fashion and retrieving them simultaneously. It was possible to perform this maneuver through a single distal access catheter without any complications. On follow-up the patient awakened and was able to follow commands on his right side. To our knowledge, dual mechanical thrombectomy with stent retrievers has not been reported in the posterior circulation previously. This technique may be useful in retrieving thrombi located at major intracranial bifurcations of the posterior circulation which do not recanalize with standard mechanical thrombectomy procedures. Although bilateral access to the basilar artery through both vertebral arteries is an advantage in posterior circulation for this technique, dual mechanical thrombectomy can also be performed through a unilateral access.
Aged
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Basilar Artery
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Catheters
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Cerebral Infarction
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Coma
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Endovascular Procedures
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Follow-Up Studies
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Humans
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Intracranial Embolism and Thrombosis
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National Institutes of Health (U.S.)
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Stents
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Stroke*
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Thrombectomy*
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Thrombolytic Therapy
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Vertebral Artery
2.Coagulation of a giant hemangioma in glans penis with holmium laser.
Emin AYDUR ; Bulent EROL ; Lutfi TAHMAZ ; Hasan Cem IRKILATA ; Cenker EKEN ; Ahmet Fuat PEKER
Asian Journal of Andrology 2008;10(5):819-821
A 21-year-old man presented with an enlarged giant hemangioma on glans penis which also causes an erectile dysfunction (ED) that partially responded to the intracavernous injection stimulation test. Although the findings in magnetic resonance imaging (MRI) indicated a glandular hemangioma, penile colored Doppler ultrasound revealed an invaded cavernausal hemangioma to the glans. Surgical excision was avoided according to the broad extension of the gland lesion. Holmium laser coagulation was applied to the lesion due to the cosmetically concerns. However, the cosmetic results after holmium laser application was not impressive as expected without an improvement in intracavernous injection stimulation test. In conclusion, holmium laser application should not be used to the hemangiomas of glans penis related to the corpus cavernosum, but further studies are needed to reveal the effects of holmium laser application in small hemangiomas restricted to the glans penis.
Adult
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Erectile Dysfunction
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pathology
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surgery
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Hemangioma
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pathology
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surgery
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Humans
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Laser Therapy
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adverse effects
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methods
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Lasers, Solid-State
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Male
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Penile Neoplasms
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pathology
;
surgery
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Surgery, Plastic
3.Clinical challenges associated with the endovascular treatment of acute stroke in a patient with infective endocarditis
Emil SETTARZADE ; Ahmet PEKER ; M. Akif TOPCUOGLU ; E. Murat ARSAVA ; Metin DEMIRCIN ; Anıl ARAT
Journal of Cerebrovascular and Endovascular Neurosurgery 2020;22(3):176-181
Although stroke is common in infective endocarditis (IE), only 26 cases of thrombectomy have been reported to date for IE-related acute stroke. We report a 40-year-old man who presented with left middle cerebral artery occlusion of unknown cause. Multiple attempts of mechanical aspiration thrombectomy and stentrievers failed to recanalize the artery. Effective revascularization was eventually achieved by placing a self-expanding intracranial stent. Post-procedurally the patient was diagnosed with IE with mitral valve insufficiency, mandating emergent valvular replacement while the patient was still on tirofiban infusion. On follow-up, the patient had a modified Rankin’s score of 0, had no recurrent stroke, and the intracranial stent remained patent yet stenosed. Based on the use of a self-expanding intracranial stent in the setting of IE, we discuss the consequences of the fibrotic and inflammatory content of the embolus and the associated high risk of intracranial hemorrhage which complicates clinical decision making.
4.Effects of melatonin on colonic anastomosis healing following chemotherapy in rats.
Cebrail AKYUZ ; Necdet Fatih YASAR ; Orhan UZUN ; Kıvanc Derya PEKER ; Oguzhan SUNAMAK ; Mustafa DUMAN ; Ahmet Ozer SEHIRLI ; Sinan YOL
Singapore medical journal 2018;59(10):545-549
INTRODUCTIONThis study aimed to investigate the effects of melatonin on the healing of colon anastomosis following chemotherapy.
METHODS32 rats were randomised into four groups: (a) control group, which underwent sigmoid colon transection and primary anastomosis; (b) melatonin group, which received melatonin daily following anastomosis; (c) 5-fluorouracil (5-FU) group, which received 5-FU for five days prior to anastomosis; and (d) 5-FU+melatonin group, which received 5-FU for five days prior to anastomosis and melatonin daily following anastomosis. The rats were sacrificed on Postoperative Day 7 and anastomotic bursting pressures were measured. The anastomotic segment was extracted for hydroxyproline, luminol and lucigenin measurement and histopathological examination. Blood samples were obtained from the vena cava for measurement of tumour necrosis factor-alpha (TNF-α) and interleukin-1 beta (IL-1β) plasma levels.
RESULTSCompared to the 5-FU group, bursting pressures of anastomosis and hydroxyproline levels were significantly higher, while luminol and lucigenin levels were significantly lower, in the control and 5-FU+melatonin groups. In addition, TNF-α and IL-1β plasma levels were significantly lower in the control and 5-FU+melatonin groups than in the 5-FU group. Histopathological examination showed a significant decrease in inflammation and necrosis formation in the melatonin group when compared to the control group. The positive effect of melatonin was also seen in the rats that received 5-FU.
CONCLUSIONOur study results showed that the adverse effects of chemotherapy on the mechanical, biochemical and histopathological parameters of anastomosis healing were attenuated through melatonin treatment.