PMID: 16628504Apr 22, 2006Paper

The microsurgical treatment of the supratentorial arteriovenous malformations. Part I--early and late results

Neurologia i neurochirurgia polska
Przemysław Kunert, Andrzej Marchel

Abstract

The aim of this study was an analysis of early and late results of the microsurgical treatment of arteriovenous malformations (AVM) located supratentorially and factors that may influence the outcome. 88 consecutive patients operated on in the years 1983-2000 for supratentorial AVM located were included in a retrospective analysis. All patients underwent microsurgical selective removal of AVM without prior embolization. The outcome was assessed on the day of discharge according to the Glasgow Outcome Scale (GOS) and at least 6 months after surgery according to the Karnofsky Scale (KS). A satisfactory outcome (GR+MD in GOS) was achieved in 92%. A severe deficit appeared in 4.5% and 3 (3.4%) patients died. The only factor influencing satisfactory outcome was low grade of AVM (I-II) in the Spetzler-Martin scale (p<0.0001). Factors influencing the excellent outcome (GR in GOS) are: size of AVM<3 cm (p=0.02), non-eloquent location (p=0.001) and exclusively superficial venous drainage (p=0.04). There was no case of deterioration in the late period. In 3/4 of patients discharged with deficit, a significant improvement was observed: a mild deficit withdrew in 13 of 17, and a severe deficit withdrew in 3 of 4. A satisfactory outcome in ...Continue Reading

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