Ocular Thrombosis after Stent-Assisted Coiling of a C7 (Paraclinoid) Internal Carotid Artery Aneurysm

Abstract

<jats:p> Stent-assisted coiling of paraclinoid aneurysms is widely performed in neurointerventional surgery. The most common adverse event related to this procedure is cerebral thromboembolism. However, reports on ocular thromboembolism are scarce. </jats:p><jats:p> We report our experience with two patients who developed ocular thromboembolism following Enterprise stent-assisted coiling of paraclinoid aneurysms. We then review the available literature for the possible pathomechanism of ocular thrombosis. </jats:p><jats:p> Ocular thromboembolism may be a risk of stent-assisted coiling when the stent traverses the orifice of the ophthalmic artery or the stent is placed in the C3 internal carotid artery. Further study is needed to clarify how to avoid this disabling complication. </jats:p>

Intra-arterial Thrombolysis for Central Retinal Artery Occlusion after the Coil Embolization of Paraclinoid Aneurysm

“…In our review, it was extremely rare that emboli or thrombi from coil embolization of ICA aneurysms caused CRAO ( Table 1 ). 1) 2) 3) 4) 5) 6) In the described case, the inadvertent insertion of the microcatheter or microwire into the orifice of the ophthalmic artery might have caused endothelial injury. Despite the continuous flushing of the catheter and systemic heparization, this injury most likely affected thrombus formation near the injured orifice of the ophthalmic artery, resulting in embolic occlusion of the retinal artery.…”

Acute pulmonary embolism in a patient with cesarean scar pregnancy after receiving uterine artery embolization: a case report

“… 6 Previous studies in patients with intracranial aneurysms or carotid artery aneurysms undergoing coil embolization show that age, number of final clips applied, number of temporary clips used, total time of temporary clip occlusion, and maximal time of temporary occlusion are risk factors for thromboembolic events. 7 , 8 Based on Virchow’s theory and previous studies, we conclude that the causes for UAE-associated pulmonary embolism may be as follows: First, the time and range for pressing on the puncture site after UAE is too long and large, which can lead to relative contrast stasis of lower-limb veins, thus producing a potential scenario for thrombosis. 5 Second, disruption of the endothelial cells caused by repeated intraoperative puncture reveals a prothrombotic surface, thereby promoting coagulation and producing local thrombosis.…”

A Case of Optic Neuropathy: Concurrent Internal Carotid Artery Aneurysm and Optic Nerve Sheath Meningioma

“…Koil embolizasyon sonrası ilerleyici görsel fonksiyon bozukluğu literatürde nadir olarak vaka sunumları şeklinde bildirilmiş olup, serebral veya oküler tromboembolitik olaylara ve sonrasında gelişebilecek retina veya optik sinir iskemisine, geçici inflamatuar olaylara ya da tedavinin tam başarılı olamaması sonucu anevrizmanın genişlemesine bağlanmıştır. [18][19][20] Hastamızın mevcut görsel bulgularının ilerleyici olarak kötüleşmesi ve özellikle görme alanı defektinin İKA anevrizması ya da koil embolizasyon ile çok da uyumlu olmaması nedeniyle, anevrizmanın ko-insidental olarak saptanmış olabileceği düşünülerek daha küçük bir lezyonu ortaya çıkar-mak amacıyla hastadan üçüncü defa ince kesit yağ baskılı yüzeyel-koil kranio-orbital MR istendi. Son MR görüntülemesinde sağ optik sinir kılıfı menenjiyomu tespit edilmesi üzerine 2011 senesinde çe-kilen MR görüntüleri tekrar incelendiğinde ilk MR görüntülerinde de optik sinir kalınlaşmasının bulunduğu, bunun optik disk ödemine bağlı olduğu düşünüldüğü için hastanın kontrastlı MR görüntü-lemesinin yapılmadığı saptandı.…”