Thrombectomy aspiration post-market study in acute stroke with the Q aspiration catheter: the TAPAS study.

BACKGROUND: The Q Aspiration Catheter (MIVI Neuro) has demonstrated greater aspiration flow rates and ingestion forces compared with conventional catheters in vitro. The safety and performance of the Q Catheter was assessed using a direct aspiration first pass technique in patients with acute ischemic stroke at four neurointerventional centers in Spain. METHODS: We included adult patients who underwent mechanical thrombectomy between March 2019 and March 2020 using the Q Catheter as first-line therapy. Performance endpoints included final successful revascularization of the target vessel (defined as modified thrombolysis in cerebral infarction (mTICI) grade 2B/3), first pass revascularization, and overall Q Catheter revascularization. Safety endpoints were symptomatic intracranial hemorrhage (sICH), embolization to new territory (ENT), and procedural complications. Modified Rankin Scale (mRS) score and all-cause mortality were also assessed. RESULTS: Forty-five subjects were enrolled. The Q Catheter successfully navigated to the lesion in 95.5% (43/45) of patients. Final successful mTICI 2B/3 revascularization was achieved in 93.3% (42/45), first pass mTICI 2B/3 revascularization with the Q Catheter was 55.3% (21/38), and overall with Q Catheter mTICI 2B/3 revascularization was 65.8% (25/38). Favorable clinical outcome of mRS 0-2 was achieved in 55.6% (25/45). There were no cases of ENT. sICH and mortality rates were 2.2% (1/45) and 13.3% (6/45), respectively. CONCLUSION: In this multicenter, observational study, the Q Aspiration Catheter used as first-line therapy demonstrated a good and safe profile in terms of navigation, revascularization, and safety in patients with acute ischemic stroke.

Pseudoaneurisma de la arteria facial como complicación de un absceso parafaríngeo. Presentación de un caso y revisión de la literatura / Pseudoaneurysm of the facial artery as a complication of parapharyngeal abscess. Presentation of a case and review of the literature

Un pseudoaneurisma constituye una dilatación sacular vascular que implica un defecto a nivel de la íntima y la capa media, manteniendo continuidad de la adventicia. Las dilataciones aneurismáticas de la arteria carótida extracraneal son raras, encontrándose entre sus causas traumatismos, infecciones y complicaciones iatrogénicas. Su tratamiento, recomendado en todos los casos, incluye la cirugía tradicional, la colocación de stent y la embolización. El riesgo de rotura implica una mortalidad de hasta el 30 %. Presentamos el caso de una mujer de 86 años derivada a Urgencias por cuadro de cinco días de odinofagia asociado a tumefacción dolorosa submandibular evidenciándose en el TC una colección parafaríngea compatible con absceso, en cuyo interior se objetivó una estructura vascular aumentada de calibre sugestiva de pseudoaneurisma. Se realizó una arteriografía que confirmó la presencia de una dilatación sacular compatible con pseudoaneurisma a nivel submandibular izquierdo, dependiente de la rama palatina ascendente de la arteria facial. Esta lesión se embolizó mediante coils para posteriormente realizarse drenaje y desbridamiento quirúrgico del absceso submaxilar. La evolución posterior fue satisfactoria. La presencia de una lesión poco frecuente pero con alta mortalidad en un cuadro clínico habitual en la práctica clínica pone de manifiesto la relevancia del estudio mediante TC a cargo de profesionales experimentados. La colaboración en estos casos entre radiólogos y cirujanos de cabeza y cuello resulta imprescindible. (AU)

A pseudoaneurysm is a vascular saccular dilatation that involves a defect at the level of the intima and the medial layer, maintaining continuity of the adventitia. Aneurysmal dilatations of the extracranial carotid artery are rare, with trauma, infection and iatrogenic complications among their causes. Their treatment, recommended in all cases, includes traditional surgery, stenting and embolization. The risk of rupture implies a mortality of up to 30 %. We present the case of an 86-year-old woman referred to the Emergency Department with five days of odynophagia associated with painful submandibular swelling, showing in CT a parapharyngeal collection compatible with abscess, inside which an enlarged vascular structure suggestive of pseudoaneurysm was observed. Arteriography confirmed the presence of a saccular dilatation compatible with pseudoaneurysm at the left submandibular region, dependent on the ascending palatine branch of the facial artery. This lesion was embolized by coils and later drainage and surgical debridement of the submaxillary abscess was performed. Subsequent evolution was satisfactory. The presence of an infrequent lesion but with high mortality in a common clinical condition highlights the relevance of CT study by experienced professionals. Collaboration in these cases between radiologists and head and neck surgeons is essential. (AU)