title: Concepts in spinal anesthesia.
mesh_terms: D000775:Anesthesia, Spinal / Q000009:adverse effects; D001339:Autonomic Fibers, Preganglionic / Q000187:drug effects; D001340:Autonomic Nerve Block / Q000009:adverse effects; D002560:Cerebrovascular Circulation / Q000187:drug effects; D003326:Coronary Circulation / Q000187:drug effects; D005728:Ganglia, Sympathetic / Q000187:drug effects; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D007022:Hypotension / Q000209:etiology / Q000628:therapy; D012119:Respiration / Q000187:drug effects; D012131:Respiratory Insufficiency / Q000209:etiology