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Comprehensive Endovascular and Open Surgical Management of Cerebral Arteriovenous Malformations
Published on: October 20, 2017
Dural sinus and cerebral venous thrombosis
1Department of Neurology, Charité, Humboldt-University, Berlin, Germany.
Insights
Cerebral venous thrombosis (CVT), though less common than arterial clots, is often missed. Early diagnosis and anticoagulation are key for managing this condition, even with bleeding.
Area of Science:
- Neurology
- Vascular Medicine
- Diagnostic Imaging
Background:
- Cerebral venous thrombosis (CVT) is an underdiagnosed condition resulting from an imbalance in blood clotting and clot-dissolving factors.
- CVT's clinical presentation varies, often presenting as distinct syndromes including pseudotumor cerebri, headache with focal deficits, seizures, or deep CVT with altered consciousness.
Purpose of the Study:
- To review the pathophysiology, clinical presentations, diagnostic approaches, and therapeutic strategies for cerebral venous thrombosis.
- To highlight the importance of recognizing CVT syndromes and initiating prompt anticoagulation.
Main Methods:
- Review of existing literature on CVT pathophysiology, clinical manifestations, and diagnostic modalities.
- Analysis of accepted diagnostic routes including CT angiography and MRI/MR angiography.
- Evaluation of therapeutic guidelines, focusing on anticoagulation protocols.
Main Results:
- CVT presents with diverse symptoms that can be categorized into four main syndromes.
- Diagnosis is typically achieved through neuroimaging techniques like CT angiography or MRI/MR angiography.
- Anticoagulation is the primary treatment, even in the presence of intracranial hemorrhage, with potential for local fibrinolysis in severe cases.
Conclusions:
- Cerebral venous thrombosis requires prompt recognition and management due to its potentially severe consequences.
- Effective anticoagulation is the cornerstone of CVT therapy, with advanced interventions considered for deteriorating patients.
- Understanding CVT syndromes aids in timely diagnosis and improves patient outcomes.
Abstract:
Cerebral venous thrombosis (CVT) is less frequent than arterial thrombosis, however, it is still frequently overlooked. Pathophysiologically it is characterized by a disturbance of the equilibrium between endogenous thrombogenic and fibrinolytic factors. In addition, the time course depends on the presence or absence of efficient venous collaterals. A wide variety of clinical symptoms do occur, however, they may be grouped into at least four relatively typical syndromes: a) the pseudotumor cerebri syndrome, b) the combination of headache and focal neurologic deficit, c) the combination of focal epileptic seizure (with or without Todd's paresis) and headache, and d) deep CVT characterized by headache, nausea, bilateral long-tract symptoms and usually a rapidly progressing decline in the level of consciousness. Two diagnostic routes are generally accepted, the one consisting of cranial computed tomography plus radiographic angiography, the other one consisting of magnetic resonance imaging and magnetic resonance angiography. The mainstay of therapy is partial thromboplastin time-effective anticoagulation (PTT at least doubled, target PTT between 80 and 100 secs). Anticoagulation should be performed even if intracranial hemorrhage is present. In cases where deterioration occurs despite effective heparin treatment and in subjects presenting with stupor or coma, more aggressive therapy, e.g., local fibrinolysis during venous angiography, may be considered.
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