#regional_anesthesia__regional_anaesthesia  loss of sensation in a region of the body produced by application of an anesthetic agent to all the nerves supplying that region (as when an epidural anesthetic is administered to the pelvic region during childbirth)
  supertype:  anesthesia__anaesthesia  loss of bodily sensation with or without loss of consciousness
  subtype:  acroanesthesia__acroanaesthesia  loss of sensation in the extremities
  subtype:  caudal_anesthesia__caudal_anaesthesia__caudal_block  regional anesthesia resulting from injection of an anesthetic into the caudal end of the spinal canal; now largely replaced by epidural anesthesia
  subtype:  epidural_anesthesia__epidural_anaesthesia__epidural  regional anesthesia resulting from injection of an anesthetic into the epidural space of the spinal cord; sensation is lost in the abdominal and genital and pelvic areas; used in childbirth and gynecological surgery
  subtype:  paracervical_block  regional anesthesia resulting from the injection of a local anesthetic on each side of the cervix; used during labor and childbirth
  subtype:  pudendal_block  regional anesthesia resulting from the use of a local anesthetic to deaden the pudendal nerves in the region of the vulva and labia majora; used to ease discomfort during childbirth
  subtype:  spinal_anesthesia__spinal_anaesthesia__spinal  anesthesia of the lower half of the body; caused by injury to the spinal cord or by injecting an anesthetic beneath the arachnoid membrane that surrounds the spinal cord
     subtype:  saddle_block_anesthesia__saddle_block_anaesthesia  the parts of a patient's body that would touch a saddle if the patient were sitting in one are anesthetized by injecting a local anesthetic into the spinal cord

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