Louise:

  walking epidural has been discussed in MIDIRS... a journal from the
u.k....the artilce cited is: mobile regional analgesia in labour. journ of
obstet and gyn vol 101 no. 10 oct 1994 p. 839-841....will try to scan later
and synopsize for you......small doses of anaetheetic and opioids injected
subarachnoid as the intial dose and maintenaince analgesia via an epidural
caheter....

 Patricia