A retrospective analysis of failed spinal anesthetic attempts in a community hospital.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000775:Anesthesia, Spinal; D005260:Female; D006764:Hospitals, Community; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies