Incidence of venous air embolism during epidural catheter insertion.
D000293:Adolescent; D000328:Adult; D000767:Anesthesia, Epidural / Q000295:instrumentation*; D000773:Anesthesia, Obstetrical; D002404:Catheterization / Q000009:adverse effects*; D004618:Embolism, Air / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D006326:Heart Auscultation; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography; D014680:Veins