scholarly journals Dural sinus mechanical thrombectomy and continuous local rt-PA infusion in a child with refractory intracranial hypertension and progressive visual loss: A case report

2020 ◽  
Vol 11 ◽  
pp. 253
Author(s):  
Martino Cellerini ◽  
Rosa Francavilla ◽  
Caterina Testoni ◽  
Monica Maffei ◽  
Mino Zucchelli ◽  
...  
Keyword(s):  
Intracranial Hypertension ◽  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Visual Loss ◽  
Mechanical Thrombectomy ◽  
Sinus Thrombosis ◽  
Therapeutic Option ◽  
Recombinant Tissue Plasminogen Activator ◽  
Dural Sinus ◽  
Tissue Plasminogen

Background: Children with intracranial hypertension are at risk for visual loss and their visual function must be closely monitored. Surgery with the insertion of a ventriculoperitoneal shunt is imperative when vision is threatened. Case Description: Herein, we report a case of a 5-year-old boy whose refractory intracranial hypertension and severe, progressive visual loss (secondary to a chronic, otogenic, right sigmoid sinus thrombosis, and a contralateral sinus tight stenosis) were resolved by a combination of continuous (6 h), locoregional, infusion of recombinant tissue plasminogen activator (rt-PA), and mechanical thrombectomy. Conclusion: The association of in loco and continuous infusion of recombinant tissue plasminogen activator (rt- PA) with mechanical thrombectomy resulted in effective in partially reopening the occluded sinus and facilitating a good clinical recovery. This combined endovascular approach may represent an alternative, less invasive, therapeutic option to surgery in children with intracranial hypertension caused by chronic cerebral venous sinus thrombosis.

scholarly journals Mechanical venous thrombectomy and prolonged infusion of tissue plasminogen activator for cerebral venous sinus thrombosis: Video case report

2020 ◽  
Vol 11 ◽  
pp. 193
Author(s):  
Steven B. Housley ◽  
Kunal Vakharia ◽  
Muhammad Waqas ◽  
Jason M. Davies ◽  
Adnan H. Siddiqui
Keyword(s):  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Mechanical Thrombectomy ◽  
Sinus Thrombosis ◽  
Cerebral Venous Sinus Thrombosis ◽  
Sigmoid Sinus ◽  
Vein Of Galen ◽  
Venous Sinus Thrombosis ◽  
Tissue Plasminogen ◽  
Systemic Anticoagulation

Background: Cerebral venous sinus thrombosis (CVST) is a rare and often misdiagnosed condition with mortality rates ranging from 6 to 10%. Diagnosis and monitoring are typically achieved through noninvasive imaging, including computed tomography or magnetic resonance venography. The current standard of treatment is systemic anticoagulation. However, in patients who continue to decline neurologically or do not show sufficient response to or have absolute contraindications to systemic anticoagulation, endovascular treatments are an alternative. Endovascular options are poorly studied and specific devices have not been developed, partially due to the rare nature of the disease. Here, we present a case report detailing the treatment of extensive CVST from the vein of Galen to the sigmoid sinus using mechanical thrombectomy and local infusions of unfractionated heparin (UFH) and tissue plasminogen activator. Case Description: A 53-year-old man presented and was found to have extensive CVST extending from the vein of Galen to the left sigmoid sinus. Systemic UFH was begun; however, his condition continued to decline, and he was taken for endovascular intervention, wherein mechanical thrombectomy was undertaken using combinations of stent retrievers and balloon catheters, which provided acceptable revascularization. Unfortunately, his hospital course was further complicated by a cerebellar hematoma that was surgically evacuated and reocclusion of the sinus for which a microcatheter was placed for infusion of UFH and tissue plasminogen activator. Conclusion: Complicated CVST may require aggressive endovascular management. Local infusions of heparin and thrombolytic agents as well as mechanical thrombectomy are safe alternative options.

Safety and Outcome of Intravenous Recombinant Tissue Plasminogen Activator (rt-PA) in the Nursing Home Residents Following an Acute Ischemic Stroke

2021 ◽  
pp. 251660852110162
Author(s):  
Elanagan Nagarajan ◽  
Lakshmi P. Digala ◽  
Anudeep Yelam ◽  
Pradeep C. Bollu ◽  
Premkumar C. Nattanmai
Keyword(s):  
Ischemic Stroke ◽  
Nursing Home ◽  
Acute Ischemic Stroke ◽  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Mechanical Thrombectomy ◽  
Recombinant Tissue Plasminogen Activator ◽  
Care Hospital ◽  
Tissue Plasminogen

Background and Purpose: Intravenous recombinant tissue plasminogen activator (IV rt-PA) is an effective treatment of acute ischemic stroke. The safety and efficacy of IV rt-PA were extensively studied in adults, including both octogenarians and nonagenarians.This study provides safety outcome of exclusive nursing home (NH) residents (dependent on activities of daily living [ADLs]) , who received IV rt-PA. Not much literature or studies are available exclusively on the NH residents. Aim: To assess the safety and outcome of IV rt-PA in patients from NHs who were admitted to our university-based tertiary care hospital, using data from a prospective stroke registry. Methods: Our study is a retrospective review of patients living in nursing facilities, admitted to our neuroscience intensive care unit after receiving IV rt-PA, from January 2010 to June 2018. We reviewed the clinical symptoms, comorbid conditions, medications, diagnostic evaluation, complications, and functional outcomes. The functional outcome was assessed based on the modified Rankin Scale (mRS) at the time of discharge, and 1- and 3-month follow-up. Results: Twenty-eight NH residents (20 [71.4%] were female with a mean age of 80.96 +/− 12.43 years) were identified who had received IV rt-PA for symptoms of acute ischemic stroke. The median mRS on admission was 3, and all of them were dependent on ADL. Twenty-seven (96.5%) patients were treated within the window (≤3 h) for IV rt-PA. There were no IV rt-PA-related violations from both our hospital and outside hospital treatment protocols. The initial computed tomographic (CT) scan of 8 (28.5%) patients revealed evidence of infarction. CT angiogram of head and neck revealed an acute intracranial blood vessel occlusion in 13 (46.4%) patients, and asymptomatic stenosis of intracranial and extracranial blood vessels in 4 (14.2%) patients. Mechanical thrombectomy was attempted in 6 (21.4%) patients and among them, the procedure was unsuccessful in 2 (7.1%) patients due to severe stenosis. One (1/21; 16.6%) patient received an intra-arterial rt-PA, and 5 (5/6;83.3%) patients developed symptomatic intracranial hemorrhage within 24 h following the procedure. Families of 9/28 (32.1%) patients decided to withdraw care. The median mRS on 30 and 90 days follow-up was 4 (interquartile range: 3-6). Conclusion: In this population, mechanical thrombectomy has a high risk for hemorrhagic conversion. IV rt-PA treatment in the NH residents may not improve the outcome of ischemic stroke.

Computed Tomography Angiography in Acute Stroke Patients Receiving Recombinant Tissue Plasminogen Activator: Outcome and Safety Evaluations in an Asian Population

2020 ◽  
Vol 49 (1) ◽  
pp. 62-69
Author(s):  
Chuan-Min Lin ◽  
Hsiu-Chuan Wu ◽  
Yi-Ming Wu ◽  
Chi-Hung Liu ◽  
Kuo-Hsuan Chang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Computed Tomography Angiography ◽  
Mechanical Thrombectomy ◽  
Medical Center ◽  
Asian Population ◽  
Recombinant Tissue Plasminogen Activator ◽  
Stroke Patients ◽  
Tissue Plasminogen

Introduction: The multiphase computed tomography angiography (mCTA) is superior to the noncontrast computed tomography (NCCT) in selecting patients that would benefit from mechanical thrombectomy following an acute ischemic stroke (AIS). It remains unclear whether the longer examination time of mCTA worsens outcomes of intravenous recombinant tissue plasminogen activator (IV r-tPA) or increases the risk of hemorrhagic transformation (HT) compared to NCCT in Asian stroke patients. Methods: Between January 2011 and December 2017, 199 AIS patients receiving IV r-tPA with initial National Institute of Health Stroke Scale (NIHSS) scores between 6 and 25 were enrolled in a single medical center. Onset-to-needle time (ONT), door-to-needle time (DNT), and creatinine levels before and after thrombolysis were recorded. We evaluated NIHSS scores 2, 24 h after treatment, and at discharge, the modified Rankin Scale (mRS) at discharge, and mortality rate. The presence of HT was reviewed within 7 days after thrombolysis. Results: DNT, perithrombolysis creatinine levels, NIHSS, and mRS scores at the emergency room were similar between the NCCT and mCTA groups. ONT was shorter in the mCTA group. AIS patients got more significant neurologic improvement (NIHSS decrease ≥4) after thrombolysis and physically independent (mRS ≤2) at discharge in the mCTA group. Mortality rates, symptomatic, and total HT rates were similar between the NCCT and mCTA groups. Conclusion: Comparing to NCCT, mCTA-based IV r-tPA would not delay DNT nor worsen the outcome. Furthermore, mCTA provides more information for early identification of candidates for mechanical thrombectomy in Asian AIS patients.

Investigation by HPLC of the Catabolism of Recombinant Tissue Plasminogen Activator in the Rat

1988 ◽  
Vol 60 (01) ◽  
pp. 107-112 ◽  
Author(s):  
Roy Harris ◽  
Louis Garcia Frade ◽  
Lesley J Creighton ◽  
Paul S Gascoine ◽  
Maher M Alexandroni ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Half Life ◽  
Recombinant Tissue Plasminogen Activator ◽  
Rat Plasma ◽  
High Molecular Weight Complex ◽  
Molecular Weights ◽  
Major Activity ◽  
Tissue Plasminogen

SummaryThe catabolism of recombinant tissue plasminogen activator (rt-PA) was investigated after injection of radiolabelled material into rats. Both Iodogen and Chloramine T iodination procedures yielded similar biological activity loss in the resultant labelled rt-PA and had half lives in the rat circulation of 1 and 3 min respectively. Complex formation of rt-PA was investigated by HPLC gel exclusion (TSK G3000 SW) fractionation of rat plasma samples taken 1-2 min after 125I-rt-PA injection. A series of radiolabelled complexes of varying molecular weights were found. However, 60% of the counts were associated with a single large molecular weight complex (350–500 kDa) which was undetectable by immunologically based assays (ELISA and BIA) and showed only low activity with a functional promoter-type t-PA assay. Two major activity peaks in the HPLC fractions were associated with Tree t-PA and a complex having a molecular weight of ̴ 180 kDa. HPLC fractionation to produce these three peaks at various timed intervals after injection of 125I-rt-PA showed each to have a similar initial rate half life in the rat circulation of 4-5 min. The function of these complexes as yet is unclear but since a high proportion of rt-PA is associated with a high molecular weight complex with a short half life in the rat, we suggest that the formation of this complex may be a mechanism by which t-PA activity is initially regulated and finally cleared from the rat circulation.

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