Morphine consumed on day 1 and day 2 was 11.5 mg ( 7.5-12 .3 mg ) and 7 mg ( 4.5-8 mg ) for the TEA group , while in the TAP group , it was 18 mg ( 16-19 mg ) and 11 mg ( 10-13 mg ) , respectively ( p < 0.001 ) .