In parturients requesting epidural analgesia, a few studies showed that 2- 10ml normal saline giving to epidural space after LOR was obtained reduced the rate of venous puncture and unblock segments to cold and pin prick, but did not improve the visual analog pain scale or reduced the need for supplemental.3,5,6 No study on improvement of unilateral block, patch block and patients' satisfaction in obstetric setting has been found.