Factors associated with intracranial hemorrhage in cases of cerebral arteriovenous malformation. 2000

U Mansmann, and J Meisel, and M Brock, and G Rodesch, and H Alvarez, and P Lasjaunias
Department of Medical Statistics, Epidemiology, and Informatics, Klinikum Benjamin Franklin, Free University Berlin, Germany.

OBJECTIVE The standard categorization of arteriovenous malformations (AVMs) involves the Spetzler-Martin grading system, which uses a simple analysis of size, location (superficial or deep), and the presence of deep or superficial drainage. Hemodynamic risk factors are also thought to play important roles in the pathogenesis of these lesions and to be associated with the intracranial hemorrhage (ICH) rate. The actual hemodynamic factors for AVMs cannot be easily measured, but angioarchitectural features can be assessed and used as surrogate parameters. METHODS The AVM angioarchitectural features for 662 patients were analyzed, and their associations with ICH as a presenting sign were studied. A cross-sectional analysis was used to qualify the strength of associations among clinical features, angioarchitectural characteristics, and ICH before treatment. RESULTS The multivariate analysis indicated that arterial stenosis and arterial ectasia were associated with lower ICH rates, whereas venous stenosis increased the rate of ICH. The presence of angiogenesis modified the effects of arterial and venous stenosis. Furthermore, the effect of venous stenosis depended on the location of the nidus. The presented data do not support a direct positive association between associated aneurysms and ICH. CONCLUSIONS Certain angiographic features seem to have prognostic potential with respect to the occurrence of ICH among patients with AVMs. A discriminatory prognostic index is proposed; its relevance must be proven in a future prospective study.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009389 Neovascularization, Pathologic A pathologic process consisting of the proliferation of blood vessels in abnormal tissues or in abnormal positions. Angiogenesis, Pathologic,Angiogenesis, Pathological,Neovascularization, Pathological,Pathologic Angiogenesis,Pathologic Neovascularization,Pathological Angiogenesis,Pathological Neovascularization
D011379 Prognosis A prediction of the probable outcome of a disease based on a individual's condition and the usual course of the disease as seen in similar situations. Prognostic Factor,Prognostic Factors,Factor, Prognostic,Factors, Prognostic,Prognoses
D001921 Brain The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM. Encephalon
D002533 Cerebral Angiography Radiography of the vascular system of the brain after injection of a contrast medium. Angiography, Cerebral,Angiographies, Cerebral,Cerebral Angiographies
D002538 Intracranial Arteriovenous Malformations Congenital vascular anomalies in the brain characterized by direct communication between an artery and a vein without passing through the CAPILLARIES. The locations and size of the shunts determine the symptoms including HEADACHES; SEIZURES; STROKE; INTRACRANIAL HEMORRHAGES; mass effect; and vascular steal effect. Arteriovenous Malformations, Cerebral,Intracranial Arteriovenous Malformations, Congenital,AVM (Arteriovenous Malformation) Intracranial,Cerebral Arteriovenous Malformations,Congenital Intracranial Arteriovenous Malformations,Intracranial Arteriovenous Malformation, Ruptured,Ruptured Intracranial Arteriovenous Malformation,Arteriovenous Malformation, Cerebral,Arteriovenous Malformation, Intracranial,Arteriovenous Malformations, Intracranial,Cerebral Arteriovenous Malformation,Intracranial Arteriovenous Malformation,Malformation, Cerebral Arteriovenous,Malformation, Intracranial Arteriovenous,Malformations, Cerebral Arteriovenous,Malformations, Intracranial Arteriovenous
D002543 Cerebral Hemorrhage Bleeding into one or both CEREBRAL HEMISPHERES including the BASAL GANGLIA and the CEREBRAL CORTEX. It is often associated with HYPERTENSION and CRANIOCEREBRAL TRAUMA. Brain Hemorrhage, Cerebral,Cerebral Parenchymal Hemorrhage,Hemorrhage, Cerebral,Intracerebral Hemorrhage,Hemorrhage, Cerebrum,Brain Hemorrhages, Cerebral,Cerebral Brain Hemorrhage,Cerebral Brain Hemorrhages,Cerebral Hemorrhages,Cerebral Parenchymal Hemorrhages,Cerebrum Hemorrhage,Cerebrum Hemorrhages,Hemorrhage, Cerebral Brain,Hemorrhage, Cerebral Parenchymal,Hemorrhage, Intracerebral,Hemorrhages, Cerebral,Hemorrhages, Cerebral Brain,Hemorrhages, Cerebral Parenchymal,Hemorrhages, Cerebrum,Hemorrhages, Intracerebral,Intracerebral Hemorrhages,Parenchymal Hemorrhage, Cerebral,Parenchymal Hemorrhages, Cerebral
D002545 Brain Ischemia Localized reduction of blood flow to brain tissue due to arterial obstruction or systemic hypoperfusion. This frequently occurs in conjunction with brain hypoxia (HYPOXIA, BRAIN). Prolonged ischemia is associated with BRAIN INFARCTION. Cerebral Ischemia,Ischemic Encephalopathy,Encephalopathy, Ischemic,Ischemia, Cerebral,Brain Ischemias,Cerebral Ischemias,Ischemia, Brain,Ischemias, Cerebral,Ischemic Encephalopathies

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