[Subarachnoid anesthesia in cesarean section].

The use of subarachnoid anesthesia in Cesarean section in spite of its long history only now gains popularity. It is due to better knowledge of physiology and anatomy of a pregnant woman an the use of new local anesthetics and better needles for spinal anesthesia in clinical practice. Analgesia comprising segments Th4-S5 of the spinal cord provides painless operation and good muscle relaxation.