Posts Tagged ‘Hemorrhage’
Ahead of Print: Spinal Pial (Type IV) Arteriovenous Fistulae
Background: Demographics, hemorrhage risk, and results of surgical and endovascular treatment of spinal pial (Type IV) arteriovenous fistulae (AVF) across a large patient group have not been previously reported.
Objective: To report demographics, hemorrhage rates, and treatment results for these AVF.
Methods: We performed a pooled analysis via the PubMed and Embase databases through November 2012. Individualized patient data were extracted and analyzed using Cox proportional hazards regression to obtain hazard ratios for hemorrhage risk factors and pooled for baseline demographics and treatment results.
Free Article: Mechanisms of Stroke After Intracranial Angioplasty and Stenting in SAMMPRIS Trial
Background: Enrollment in the Stenting and Aggressive Medical Management for the Prevention of stroke in Intracranial Stenosis (SAMMPRIS) trial was halted owing to higher-than-expected 30-day stroke rates in the stenting arm. Improvement in periprocedural stroke rates from angioplasty and stenting for intracranial atherosclerotic disease (ICAD) requires an understanding of the mechanisms of these events.
Objective: To identify the types and mechanisms of periprocedural stroke after angioplasty and stenting for ICAD.
Methods: Patients who experienced a hemorrhagic or ischemic stroke or a cerebral infarct with temporary signs within 30 days of attempted angioplasty and stenting in SAMMPRIS were identified. Study records, including case report forms, procedure notes, and imaging were reviewed. Strokes were categorized as ischemic or hemorrhagic. Ischemic strokes were categorized as perforator territory, distal embolic, or delayed stent thrombosis. Hemorrhagic strokes were categorized as subarachnoid or intraparenchymal. Causes of hemorrhage (wire perforation, vessel rupture) were recorded.
Free CME Article: Risk Factors for Pediatric Arachnoid Cyst Rupture/Hemorrhage
Background: As the availability of imaging modalities has increased, the finding of arachnoid cysts has become common. Accurate patient counseling regarding physical activity or risk factors for cyst rupture or hemorrhage has been hampered by the lack of definitive association studies.
Objective: This case-control study evaluated factors that are associated with arachnoid cyst rupture (intracystic hemorrhage, adjacent subdural hematoma, or adjacent subdural hygroma) in pediatric patients with previously asymptomatic arachnoid cysts.
Methods: Patients with arachnoid cysts and intracystic hemorrhage, adjacent subdural hygroma, or adjacent subdural hematoma treated at a single institution from 2005 to 2010 were retrospectively identified. Two unruptured/nonhemorrhagic controls were matched to each case based on patient age, sex, anatomical cyst location, and side. Risk factors evaluated included arachnoid cyst size, recent history of head trauma, and altitude at residence.
Ahead of Print: Risk Factors for Pediatric Arachnoid Cyst Rupture/Hemorrhage
Background: As the availability of imaging modalities has increased, the finding of arachnoid cysts has become common. Accurate patient counseling regarding physical activity or risk factors for cyst rupture or hemorrhage has been hampered by the lack of definitive association studies.
Objective: This case-control study evaluated factors that are associated with arachnoid cyst rupture (intracystic hemorrhage, adjacent subdural hematoma, or adjacent subdural hygroma) in pediatric patients with previously asymptomatic arachnoid cysts.
Methods: Patients with arachnoid cysts and intra-cystic hemorrhage, adjacent subdural hygroma, or adjacent subdural hematoma treated at a single institution from 2005 to 2010 were retrospectively identified. Two unruptured/non-hemorrhagic controls were matched to each case based on patient age, sex, anatomical cyst location, and side. Risk factors evaluated included arachnoid cyst size, recent history of head trauma, and altitude at residence.
Free CME Article: Spinal Glomus (Type II) Arteriovenous Malformations
Background: The natural history and treatment results for spinal glomus (Type II) arteriovenous malformations (AVMs) remain relatively obscure.
Objective: To calculate spinal glomus (Type II) AVM hemorrhages rates and amalgamate results of intervention.
Methods: We performed a pooled analysis via the PubMed database through May 2012, including studies with at least 3 cases. Data on individual patients were extracted and analyzed using a Cox proportional hazards regression model to obtain hazard ratios for hemorrhage risk factors.
