Evaluation of the Amiens University Hospital Neuroradiology Anticoagulation Protocol

Study Overview
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Brief Summary
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To prevent thromboembolic complications, the embolization procedure is performed under prophylactic unfractionated heparin, the efficacy of which is monitored by point-of- care testing according to international guidelines. However, these guidelines are based on limited scientific evidence and the ideal level of anticoagulation required has not been precisely defined. Furthermore, the correlation between the point-of- care tests used at Amiens University Hospital and the reference methods used in the laboratory varies considerably according to the available literature.

Detailed Description
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Since the beginning of the 2000s, the reference treatment for the management of aneurysmal subarachnoid haemorrhage consists of interventional neuroradiology with coil embolization of the aneurysm. Although ensuring a better neurological prognosis than neurosurgical clipping, interventional neuroradiology exposes the patient to various risks: thromboembolic complications during or after embolization and re-rupture of the aneurysm during embolization. To prevent thromboembolic complications, the embolization procedure is performed under prophylactic unfractionated heparin, the efficacy of which is monitored by point-of- care testing according to international guidelines. However, these guidelines are based on limited scientific evidence and the ideal level of anticoagulation required has not been precisely defined. Furthermore, the correlation between the point-of- care tests used at Amiens University Hospital and the reference methods used in the laboratory varies considerably according to the available literature.

Official Title
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Evaluation of the Amiens University Hospital Neuroradiology Anticoagulation Protocol

Conditions
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Aneurysm

Intervention / Treatment
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* Drug: anticoagulation by unfractionated heparin


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients over the age of 18 years undergoing one of the following interventional neuroradiology procedures at Amiens University Hospital: elective embolization of an intracranial aneurysm, emergency embolization of a ruptured intracranial aneurysm, elective or urgent embolization of an intracranial or perispinal arteriovenous malformation. Exclusion Criteria: Patients in whom all modalities of monitoring of the efficacy of anticoagulation (laboratory tests and point-of-care tests) were not performed, incomplete embolization or radiological follow-up records. Patients presenting a contraindication to the administration of unfractionated heparin: history of heparin-induced thrombocytopenia or haemorrhagic coagulopathy (von Willebrand disease, haemophilia).

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: anticoagulation by unfractionated heparin|anticoagulation by unfractionated heparin|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| correlation between laboratory clotting tests and point-of-care clotting tests | evaluation of the correlation between laboratory clotting tests and point-of-care clotting tests performed on the Hemochron Junior® device. care clotting tests and laboratory tests in the setting of intracranial embolization. | 6 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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anticoagulation, aneurysmal subarachnoid haemorrhage, interventional neuroradiology, coil embolization