title: Regional blocks and their difficulties. Spinal.
abstract: Low spinal analgesia remains a safe, reliable, simple and economical method for perineal surgery. If strict rules are followed during injection, and hypotension is sensibly managed, the technique is devoid of serious complications.
mesh_terms: D000763:Anesthesia, Caudal; D000767:Anesthesia, Epidural; D000775:Anesthesia, Spinal / Q000009:adverse effects; D006261:Headache / Q000209:etiology / Q000517:prevention & control; D006801:Humans; D007022:Hypotension / Q000209:etiology