Intrasinus Thrombolysis Research Articles

Safety and clinical outcomes in endovascular treatment for symptomatic cerebral venous thrombosis: a single-center experience with meta-analysis.

The role of mechanical thrombectomy (MT) in cerebral venous sinus thrombosis (CVT) is ambiguous. This study aims to share our experience with MT in CVT, supplemented by a meta-analysis on this treatment. All patients who had MT for CVT at our institution, between 2016 and 2021, were retrospectively reviewed for treatment indications, the technique used, success and complication rates, and clinical outcomes. A meta-analysis was performed for clinical and safety outcomes from published literature with > 10 patients. A total of 15 patients were included in this study. All had a venous hemorrhage or deteriorating despite anticoagulation. MT was performed using aspiration (with wide bore catheters) in 7 patients: aspiration with stent retriever in 5 and transjugular Fogarty-balloon thrombectomy in 3 patients. Adjunctive intra-sinus thrombolysis (IST) was used in 4 cases and venoplasty in 3. Technical success (restoring antegrade venous flow on arterial injection) was 100% with no procedure-related major complication. The direct transjugular approach was cheaper and faster. At 3-month follow-up, 86% of patients had good outcomes (MRS < 2). Meta-analysis of clinical and safety outcomes from 22 and20 studies, respectively, demonstrated a positive association between MT and good outcomes as well as no significant association with hazardous periprocedural events. EVT via mechanical means for CVT is feasible in our series and meta-analysis. From our experience, trans-jugular Fogarty balloon embolectomy seems to be a potential cost-saving option, at least in a certain part of the world.

The clinical\xa0analysis and treatment strategy of endovascular treatment for cerebral venous sinus thrombosis combined with intracerebral hemorrhage

Cerebral venous sinus thrombosis (CVST) combined with intracerebral hemorrhage(ICH) is a special subgroup, and whether intrasinus thrombolysis (IST) or mechanical thrombectomy (MT) therapy should be carried out is controversial because of previous hemorrhage and possible delayed hemorrhage.The aim of this study was to analyze the safety and effectiveness of endovascular treatment of CVST with ICH and further discuss the treatment strategy. This is a retrospective study of 56 cases admitted from January 2010 to June 2019 diagnosed with CVST combined with ICH, and all were treated with endovascular treatment including IST with or without MT. We reviewed the clinical, radiological, and outcome data of all patients. The percentage of cases that showed complete and partial recanalization were 67.8% and 26.9% after endovascular treatment. ICH exacerbation occurred in 5 cases during thrombolysis. The percentage of cases with good outcome was 87.5% at discharge. 51 cases were followed up at sixth month. 49 cases had a mRS score of 0–2,and 2 cases had a mRS score of 3–4 at sixth month.Our data suggest that endovascular treatment may improve clinical and radiological outcome in most patients of CVST with ICH, but confirmation in prospective, controlled studies is warranted.

Deep Cerebral Venous Thrombosis Treatment : Endovascular Case using Aspiration and Review of the Various Treatment Modalities.

Deep cerebral venous thrombosis (CVT) is an uncommon condition with ahigh morbidity and mortality. The optimal treatment approach for deep CVT remains uncertain and due to its low prevalence, randomized trials are not feasible. We showcase astraight sinus thrombosis treated with alarge bore aspiration and performed ameta-analysis of the available literature to characterize and evaluate the various treatment modalities for patients with deep CVT. We conducted asystematic search in PubMed, EMBASE and Ovid Medline using appropriate keywords/MESH terms search strategy. All patients with thrombosis involving the deep venous sinuses were included if treatment records were available. Outcome measures included recanalization of the affected sinus, good functional outcome assessed by a modified Rankin scale (mRS) of 0-2 or reported independent functional outcomes, permanent neurological deficits, further hemorrhage and mortality. A total of 69 studies comprising 120 patients were included in the analysis. Anticoagulation was the most common treatment (85.8%), whilst local intrasinus thrombolysis was performed in 40.0% of the patients and mechanical endovascular modalities were employed in 20.0% of the patients. Recanalization of the occluded sinus was seen in 83.5% of the patients while 62.6% patients achieved good functional outcome. There was considerable morbidity with 60.7% having apermanent neurological deficit, 23.3% having further hemorrhage after admission and 18.6% mortality. In the cohort receiving anticoagulation, 65.3% achieved good outcome but intracranial hemorrhage at presentation was associated with poorer outcome, permanent deficits, further bleeding and mortality. Anticoagulation is an effective treatment strategy for deep CVT; however, patients with intracranial hemorrhage at presentation often have poorer outcomes and early endovascular strategies could be considered in this subgroup.

Mechanical Thrombectomy for Cerebral Venous Sinus Thrombosis: A Case Series and Technical Note

Cerebral venous sinus thrombosis is a rare cause of acute stroke. It may lead to hemorrhagic venous infarctions, brain swelling, or raised intracranial pressure and can be associated with significant mortality and morbidity. Low-molecular-weight heparin is the mainstay of treatment. Endovascular treatment is reserved for patients who deteriorate despite medical management. Retrospective evaluation of our institutional databases from 2018-2019 revealed 7 patients who underwent aspiration thrombectomy using large-bore aspiration catheters for recanalization of the dural sinuses with or without intrasinus thrombolysis during the procedure. Their clinical, imaging findings, endovascular technique, and outcome are discussed. We treated 7 patients who did not respond to best medical management. Aspiration thrombectomy was the primary mode of endovascular treatment. Adjuvant low-dose (10 mg recombinant tissue plasminogen activator), short-duration (20-minute) intrasinus thrombolysis was used in 4 patients only during the procedure. Headache was the most common symptom, followed by seizures, focal neurologic deficits, and vomiting. There was improvement in clinical condition within 24 hours of procedure in all patients. The 30-day modified Rankin Scale score was 0 in 6 patients. One patient had residual hemiparesis and aphasia. There were no procedure-related complications. The described technique appears to be simple, safe, and effective and results in a relatively short procedure time in achieving complete or partial recanalization of the dural sinuses in patients who deteriorate despite clinical management. Endovascular thrombectomy along with conventional medical management restores the final drainage pathway of the brain with good clinical outcome.

Intrasinus Thrombolysis for Cerebral Venous Sinus Thrombosis: Single-Center Experience.

Objective: The purpose of this research was to study the safety and efficacy of intrasinus thrombolysis in patients with cerebral venous sinus thrombosis unresponsive to conventional heparin therapy.Methods: A total of 156 CVST patients were treated using interventional thrombolysis in our center from January 2010 to June 2018. Clinical data, including duration of symptoms, indications and outcome of IST were retrieved, and outcomes were analyzed. DSA or MRV was used to assess the recanalization after thrombolysis. mRS was used to evaluate the outcome at admission, discharge, and follow-up.Results: 91.38% of patients obtained functional independence (mRS 0–2). The mRS score was 0–2 in 120 patients (76.92%, 120/156) at the time of discharge. Seven patients succumbed during hospitalization. MRV examination was performed in 149 patients, and the results showed that the venous sinus of 112 patients (75.17%) was completely recanalized, and it was partially recanalized in 28 patients (18.79%) and nine patients (6.04%) had no recanalization at the time of discharge. In total, 116 patients were followed up at least for 6 months, 89 patients (76.72%) were completely recanalized, 21 patients (18.1%) were partially recanalized, and six patients (5.17%) were not recanalized.Conclusion: IST may be more effective than systemic heparin anticoagulation in moribund and unresponsive patients despite the risk of hemorrhage. Large randomized controlled trials are required to further evaluate this issue.

Cerebral venous sinus thrombosis: An experience of choosing between local intrasinus thrombolysis and anticoagulant in patient with bleeding problem

Cerebral venous sinus thrombosis: An experience of choosing between local intrasinus thrombolysis and anticoagulant in patient with bleeding problem

Combined aspiration thrombectomy and continuous intrasinus thrombolysis for cerebral venous sinus thrombosis: technical note and case series.

Cerebral venous sinus thrombosis is an uncommon cause of stroke with high morbidity and mortality rates from venous infarction, intracranial hemorrhage, and extensive cerebral edema. Endovascular treatment with various devices has been proposed as a salvage treatment when standard medical treatment with systemic anticoagulation is ineffective, especially in long segment dural sinus thrombosis. We describe our technique of transvenous endovascular aspiration thrombectomy with large bore thrombectomy catheters, followed by placement of microcatheter for local thrombolytic infusion at the site of thrombosis. We report a retrospective study of angiographic and clinical outcome of six consecutive patients treated with this approach. Endovascular aspiration thrombectomy with large bore catheters followed by continuous local thrombolytic infusion appeared to be a safe and effective salvage treatment for selected patients with cerebral dural venous sinus thrombosis refractory to medical treatment.

Intrasinus thrombolysis in cerebral venous sinus thrombosis: Experience from a university hospital, India.

Background:Intrasinus thrombolysis (IST) is believed to improve outcome in patients of cerebral venous sinus thrombosis (CVST) unresponsive to heparin.Purpose:The purpose of this article is to describe our experience with IST in patients of CVST unresponsive to heparin.Materials and Methods:Hospital databases were searched, and patients with CVST who underwent IST from May 2011 to March 2014 were identified. Data on clinical presentation, duration of symptoms, and indications and dosage of IST were retrieved and outcomes analyzed.Results:Twenty-four patients received IST. The presenting symptoms included headache (n = 19), seizures (n = 16), and altered sensorium (n = 14); signs included papilledema (n = 20) and hemiparesis (n = 15). Nineteen patients received unfractionated heparin (UFH), four received low-molecular-weight heparin (LMWH), and one received both. In one patient, microcatheter could not be passed, two patients bled intracranially, and three had nonintracranial bleeds. Among four deaths, none was due to iatrogenic bleeding. On discharge, 10 patients (43.5%) had good improvement with the modified Rankin Scale (score; mRS) ≤2 and eight (34.8%) had partial improvement with mRS = 3, 4. Seventeen patients (73.9%) had mRS ≤2 at 6 months follow-up. Bleeding complications of urokinase were less than those of alteplase. Recanalization of the involved sinuses was achieved in all. Early intervention led to successful recanalization. Functional recanalization decreased intracranial bleeding.Conclusion:Till date, our study is the largest series of IST in CVST reported from India. IST may be more effective than systemic heparin anticoagulation in moribund and unresponsive patients despite the potential for bleeding manifestations. Functional recanalization is adequate for good results. However, a randomized prospective study comparing heparin anticoagulation with IST is warranted.

Mechanical thrombectomy in cerebral venous thrombosis: systematic review of 185 cases.

Cerebral venous thrombosis is generally treated with anticoagulation. However, some patients do not respond to medical therapy and these might benefit from mechanical thrombectomy. The aim of this study was to gain a better understanding of the efficacy and safety of mechanical thrombectomy in patients with cerebral venous thrombosis, by performing a systematic review of the literature. We identified studies published between January 1995 and February 2014 from PubMed and Ovid. We included all cases of cerebral venous thrombosis in whom mechanical thrombectomy was performed with or without intrasinus thrombolysis. Good outcome was defined as normal or mild neurological deficits at discharge (modified Rankin Scale, 0-2). Secondary outcome variables included periprocedural complications and recanalization rates. Our study included 42 studies (185 patients). Sixty percent of patient had a pretreatment intracerebral hemorrhage and 47% were stuporous or comatose. AngioJet was the most commonly used device (40%). Intrasinus thrombolysis was used in 131 patients (71%). Overall, 156 (84%) patients had a good outcome and 22 (12%) died. Nine (5%) patients had no recanalization, 38 (21%) had partial, and 137 (74%) had near to complete recanalization. The major periprocedural complication was new or increased intracerebral hemorrhage (10%). The use of AngioJet was associated with lower rate of complete recanalization (odds ratio, 0.2; 95% confidence interval, 0.09-0.4) and lower chance of good outcome (odds ratio, 0.5; 95% confidence interval, 0.2-1.0). Our systematic review suggests that mechanical thrombectomy is reasonably safe but controlled studies are required to provide a definitive answer on its efficacy and safety in patients with cerebral venous thrombosis.

Mechanical Thrombectomy for Cerebral Venous Sinus Thrombosis

Endovascular treatment of cerebral venous sinus thrombosis (CVST) includes pharmacological and mechanical thrombolysis. The authors searched the English literature on CVST from 1990 to 2012 for all case reports or case series of mechanical thrombectomy. A total of 64 patients were treated in all published studies. The techniques for mechanical thrombectomy included rheolytic thrombectomy with an AngioJet device (46.9%), clot retraction with the Penumbra system (4.7%), clot retraction with a Fogarty catheter (1.6%), clot retraction with a microsnare (3.1%), balloon venoplasty without stenting (18.7%), balloon venoplasty with stenting (4.7%), and an amalgam of techniques (18.7%). Nine (16.1%) patients died. At the most recent follow-up, 40 (62.5%) patients had no disability or minor disability and 7 (10.9%) patients had major disability. Randomized multiinstitutional clinical trials with larger number of participants are needed to sufficiently compare the effect of intrasinus thrombolysis and mechanical thrombectomy to standard-of-care anticoagulation therapy.

Local thrombolysis for patients of severe cerebral venous sinus thrombosis during puerperium

ObjectiveTo explore and evaluate the efficacy of intrasinus thrombolysis (IST) in patients with cerebral venous sinus thrombosis (CVST) during postpartum period. Methods11 patients during postpartum period with CVST who received IST during July 2007–November 2011 were included. Urokinase was infused into the sinuses via a microcatheter. Magnetic resonance venography (MRV) was performed to assess the recanalization of venous sinuses. ResultsBefore discharge, the intracranial pressure in 11 patients was under 200 mmH2O. MRV confirmed that venous sinus of 9 patients were smooth. The cortex venous and deep venous recovered to normal. Venous sinus of 2 patients recanalized partly, and cortex venous and deep venous had compensation. 9 patients had good outcome and 2 patients had only mild deficits. ConclusionIntrasinus thrombolysis is safe and effective in patients with severe cerebral venous sinus thrombosis during postpartum period.

Local Thrombolysis for Severe Cerebral Venous Sinus Thrombosis

Cerebral venous thrombosis is a rare entity that can be difficult to manage. Most patients with cerebral sinus thrombosis recover after treatment with heparin, but a subgroup of severe cerebral venous sinus thrombosis has a poor prognosis. Those patients may benefit from intrasinus thrombolysis. The purpose of this research was to carry out a retrospective analysis of patients with severe cerebral venous sinus thrombosis, and to study the safety and efficacy of intrasinus thrombolysis in patients with cerebral venous sinus thrombosis unresponsive to conventional heparin therapy. Thirty-seven patients with cerebral venous sinus thrombosis who received intrasinus thrombolysis during a 3-year period (January 2007 to December 2009) were included in this study. Urokinase was infused into the sinus via a microcatheter. Data regarding demographic, clinical, and radiologic features were collected. Follow-up data were obtained at 6 months. MRV was repeated to assess the recanalization of the venous sinus. Twenty-seven patients (73%) had good outcome and 7 patients (19%) who were independent for activities of daily life had only mild deficits. One patient survived with severe neurologic deficits and 2 patients died. Complete recanalization of the superior sagittal sinus was seen in 35 patients (97%). At a follow-up of 6 months, 34 patients (92%) were either asymptomatic or had only minor subjective symptoms. Intrasinus thrombolysis is safe and effective in patients with severe cerebral venous sinus thrombosis. However, the subgroup of patients that is likely to benefit the most from this procedure is not clear from our data. Large randomized controlled trials are required to further clarify this issue.

A Case of Worsening Deep Cerebral Venous Sinus Thrombosis Managed by Intrasinus Thrombolysis

Cerebral venous sinus thrombosis (CVST) is an uncommon condition with severe consequences. Although we do not know the exact incidence and prevalence of CVST, it is an important diagnosis. Over the past decade, it has been diagnosed more frequently due to greater awareness and availability of noninvasive diagnostic techniques. Furthermore, routine diagnostic neuroimaging has been used to monitor the clinical progress of these patients, especially in deteriorating cases. In order to decrease morbidity and mortality, an understanding of CVST treatment options is important. Treatment of extensive intracranial venous sinus thrombosis with intrasinus infusion of recombinant tissue plasminogen activator (rt-PA) is relatively controversial as there are no clear guidelines in regards to appropriate therapeutic management. We report a case of successful intrasinus thrombolysis of deep cerebral sinus thrombosis (DCST) resulting in rapid radiographic improvement associated with complete clinical recovery.

Mechanical and chemical thrombolysis of cerebral sinus thrombosis: evolution of a technique

Cerebral sinus thrombosis, although uncommon, can be lethal if not recognized and treated quickly. Systemic heparin has become the treatment standard of care; however, some patients' conditions continue to deteriorate even while taking heparin. Endovascular techniques for thrombolysis have continued to evolve. The authors present a case of cerebral sinus thrombosis treated with a combination of mechanical and chemical intrasinus thrombolysis.

Intrasinus thrombolysis in cerebral venous sinus thrombosis: Single-center experience in 19 patients

Evidence from small case series suggests that the intrasinus thrombolysis (IST) is relatively safe and effective in rapid recanalization of thrombosed sinuses and reversal of neurological deficits in patients with cerebral venous and sinus thrombosis (CVST) However, in the absence of randomized controlled trials, the exact role of IST in the management of CVST is unclear, To study the safety and efficacy of IST in patients with CVST. Adult patients with CVST who received IST during a two-year period (January 2003-December 2004) were included. Data regarding demographic, clinical and radiological features were collected. Follow-up data were obtained at 3-6 months. Magnetic resonance venography (MRV) was repeated to assess the recanalisation of venous sinuses. Nineteen patients (11 women) with a mean age of 32 years (range 17-46 years) received IST during the study period. Common clinical features at presentation included headache, altered consciousness and seizures. Indications for thrombolysis included clinical deterioration despite adequate anticoagulation and rapid worsening of consciousness or neurological deficits. Thirteen patients (68%) had dural sinus thrombosis alone and six others had coexisting deep venous system involvement. Venous infarcts were present in 13 patients. At discharge, 15 patients (79%) had good outcome and were either asymptomatic or had only mild deficits and were independent for activities of daily living. Three patients died and one survived with severe neurological deficits. Angiographic improvement (as per digital subtraction angiography) was noted in 12 patients (complete in five and partial in seven) and seven patients had poor or no recanalization of the involved venous sinuses. At a median follow-up of 6.3 months, 14 (74%) patients had no or mild neurological deficits. IST is safe and effective in patients with CVST who fail to respond to conventional medical treatment. However, the subgroup of patients who are likely to benefit the most from this procedure is not clear from our data. Large randomized controlled trials are required to further clarify this issue.

Rheolytic Thrombectomy for Dural Venous Sinus Thrombosis

Cerebral venous thrombosis is a rare condition. Its diagnosis and management can be difficult. Treatment options include systemically delivered anticoagulation or thrombolysis. Intrasinus thrombolysis is an increasingly used intervention but it increases the risk of hemorrhage, especially in patients who have a rapidly deteriorating neurological condition. Mechanical thrombectomy that provides rapid canalization without increased risk of hemorrhage is an attractive alternative treatment. We describe the use of AngioJet rheolytic thrombectomy in 4 patients with extensive cerebral venous sinus thrombosis, preexisting intracranial hemorrhage, and severe progressive neurological deficit despite heparin therapy. Partial or complete sinus patency was restored in all 4 patients and complete neurological recovery was achieved in 3 patients. Intracranial hemorrhage or a rapidly deteriorating neurological condition may preclude the use of thrombolytic agents in the treatment of patients with cerebral venous sinus thrombosis. In such patients, mechanical thrombectomy offers a useful alternative.

Intrasinus administering rt-PA combined with mechanical thrombectomy for serious cerebral venous sinus thrombosis

Objective To investigate the effect of endovaseular interventional therapy, intrasinus administered recombinant tissue plasminogen activator(rt-PA) combined with mechanical thrombeetomy for serious cerebral venous sinus thrombosis(CVST). Method Eleven patients with serious CVST were accepted endovascular interventional therapy under general anaesthesia and systemic heparinization. Fifteen procedures were performed: rhcolytic thrombectomy with AngioJet catheter combined with intrasinus rt-PA thrombolysis in eight procedures, AngioJet catheter thrombectomy without intrasinus rt-PA thrombelysis in one procedure, and clot disruption with micro-balloon or micro-guidwire combined with intrasinus rt-PA thrombelysis in six procedures. Four of eleven patients were required a second endovascular interventional treatment for partial rethrombosis after the first procedure. Total rt-PA dose per procedure was ranged from 0 to 15 mg,mean (9. 4 ±4. 5)mg. All of the procedures were technically successful, no complications occurred. Results Eight patients were stupor or coma when they accepted therapy in our study, and two patients had transtentorial herniation. Eight of eleven patients experienced excellent or good clinical outcomes, and three patients died. The duration of follow-up ranged from 10 to 32 months(mean 21 months) ,MRI/MRV showed the affectedsinuses smoothly in six patients, partially smoothly in 2 patients. No patient has a rethrombesis. Conclusions The patient with serious CVST can be rapidly fatal only by routine therapy. Rhcolytic thrombectomy with AngioJet catheter or micro-balloon combined with intrsinus rt-PA thrombolysis can rapidly recanalize the affected dural sinuses in patients with CVST. It is a safe and effective endovascular method for high-risk patient with CVST. Key words: Venous thrombosis; Thrombolytic therapy; AngioJet catheter; rt-PA

Cerebral Venous Thrombosis

Cerebral venous thrombosis (CVT) is less frequent than arterial thrombosis, presents in an atypical fashion, and is an uncommon cause of stroke. Although the functional outcome from CVT is better than arterial strokes, the outcome of CVT remains unpredictable and may lead to sequelae or even death if not recognized and treated early. The clinical presentations, time of onset, and neuroimaging findings vary. Symptoms include headache, seizures, neurologic deficits, and altered consciousness. Causes include hematologic disorders, hypercoagulable states, pregnancy, and contraceptive medications. Treatment of this infrequent condition remains controversial and includes heparin infusions, intrasinus thrombolysis, and other endovascular procedures. Further clinical trials are needed to address optimal treatment of this infrequent but potentially serious condition.