Epidural block for treatment of renal colic during pregnancy.

This report documents for the first time the application of continuous segmental epidural block (T11 to L2) to treat renal colic complicating pregnancy. The block was maintained for 16 hours and the pain did not recur. Advantages for the mother, and possibly for the foetus, are considered. The published experience of others using this technique in nonpregnant patients is reviewed.