title: Epidural blood patch: evaluation of the volume and spread of blood injected into the epidural space.
mesh_terms: D000293:Adolescent; D000328:Adult; D001769:Blood; D004824:Epidural Space; D005260:Female; D006261:Headache / Q000209:etiology / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013115:Spinal Canal; D013129:Spinal Puncture / Q000009:adverse effects