Although rare, a change in visual acuity after surgery for nonocular procedures has devastating consequences. Increased recognition and discussion of this complication is reported in recent literature, most notably following spinal and cardiac surgery. Various pathologies may be responsible for perioperative visual loss (POVL), including ischemic optic neuropathy, retinal vascular occlusion, and cortical blindness. Here we review the incidence of the problem, the anatomy and physiology of the ocular circulation, variants of POVL, and proposed predisposing factors. Potential perioperative methods to prevent this complication are discussed, and suggested treatment modalities are presented.
Local anesthetic-associated cardiac toxicity following caudal epidural blockade is, fortunately, a rare event. Prompt recognition and early treatment is the key to successful resuscitation. Early use of the lipid emulsion Intralipid in bupivacaine-induced cardiac toxicity may lead to a good outcome.
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