title: Experimental subdural retrobulbar injection of anesthetic.
abstract: Sudden respiratory arrest following retrobulbar block, a complication which has gained increasing attention, is explained by an experimental study in which radiopaque dye was injected into the intraorbital subdural space, as could easily be done in a living patient, and was shown by radiography to diffuse posteriorly along the subdural space to the midbrain surrounding the respiratory center. Clinical implications are discussed.
mesh_terms: D000777:Anesthetics / Q000009:adverse effects*; D006801:Humans; D007267:Injections; D012131:Respiratory Insufficiency / Q000139:chemically induced* / Q000517:prevention & control; D013355:Subdural Space
chemical_list: D000777:Anesthetics