[Experimental and clinical evaluation on ceftriaxone in the field of obstetrics and gynecology].

Ceftriaxone (CTRX), a new cephalosporin antibiotic, was evaluated in the field of obstetrics and gynecology and the following results were obtained. The concentration of CTRX after an intravenous injection with 1 g was determined in the uterine artery, cubital vein and in the intrapelvic genital tissues such as the oviduct, ovary, endometrium, myometrium, cervix uteri and portio vaginalis. The peak level was 160 micrograms/ml at 26 minutes after injection both in the uterine arterial serum and cubital venous serum, 48 and 38 micrograms/g at 1 hour and 18 minutes in the tissues of oviduct and ovary, respectively, 54 and 50 micrograms/g at 48 minutes in the myometrium and cervix uteri, respectively, while 46 micrograms/g at 39 minutes in the portio vaginalis. The mean level 18 to 24 hours after administration was 19 micrograms/ml in the uterine arterial serum and cubital venous serum and 6.3 micrograms/g in the intrapelvic genital tissues. A case of intrapelvic infection clinically showed an excellent response without any side effects by intravenous drip infusion with 2 g divided as twice a day for 7 days. The above results show that CTRX is useful in the field of obstetrics. and gynecology.