Intraoral lesions must be adequately
protected at the time of anesthetic induction or intraoral instrumentation.
Intracranial arteriovenous malformations are at risk of rupture if subjected
to high swings in arterial blood pressure. Intraocular lesions may bleed for
similar reasons. Gastrointestinal hemorrhage and hemoptysis have all been described. If
very extensive, multiple arteriovenous malformations may lead to a
high-output cardiac failure, requiring treatment before anesthesia and
surgery. Central regional anesthesia is best avoided because of the risk of
associated medullar angioma.