one hundred and fifty-three patients with moderate to severe infections due to gram-negative bacteria , including septicaemia ( 60 cases ) , lower respiratory tract infection ( 32 cases ) , intra-abdominal infection ( 40 cases ) and urinary tract infection ( 21 cases ) , were treated with aztreonam 1 g every 12 h .
C1112209
intra-abdominal infection
C0004521
aztreonam