The isolation, identification of phlogistic bacteria and its susceptibility test were peformed on a total of 180 cases of bacterial infections at the clinic of otorhinolaryngology, Kokura Memorial Hospital, while the same tests were performed on 44 patients with otitis media, and then the latter was treated with GM. The obtained results were as follows
1) The identified and isolated bacteria from 180 patients were 212 strains for one year, and the gram-negative bacteria were 35 strains of proteus, 44 strains of pseudomonas, 31 strains of providencia, and a few strains of klebsiella, alcaligenes faecalis, escherichia coli, enterobacteria-like tbacteria, in a total of 137 strains. On the other hand, gram-positive bacteria were 39 strains of staphylococcus aureus, 16 strains of staphylococcus epidermidis, 11 strains of beta-streptococcus, and a few strains of diplococcus and corynebacterium, in a total of 75 strains. The susceptibility of GM against them was 76 per cent in gram-negative germs and 90 per cent in gram-positive germs.
2) As for the isolated bacteria from 44 patients with chronic otitis media, Gramnegative germs were 15 strains of pseudomonas aeruginosa, 13 strains of proteus, 5 strains of providencia, 3 strains of klebsiella, other 5 strains of serratia, enterobacteria-like germs, and alcaligenes faecalis, etc, in a total of 41 strains ; gram-positive germs were 13 strains of staphylococcus aureus, 3 strains of staphylococcus epidermidis, and 2 strains of beta-streptococcus corynebacterium, in a total of 18 strains, among them, only 2 strains, namely each one of providencia and straphylococcus aureus, showed the resistance to GM.
3) Effects of GM were observed by dividing into 2 groups, namely, one group injected intramuscularly in a daily dose of 120 mg, t. i. d., and another group treated with intramuscular injection in a daily dose of 160 mg. In the former group, 17 out of 20 cases responded effectively, and in the latter group, 21 out of 26 cases responded effectively.
4) As the side effects of GM, the group treated with intramuscular injection in a daily dose of 160 mg showed each one case of drug-eruption, hepatic functional disorders, and acoustic disorders, in a total of 3 cases.
5) The case of acoustic disorder had a history of treatment for the pulmonary tuberculosis, and also had the disorder of hearing at the sound-perceiving system before administration of GM.
6) From the above results, GM is an expectable antibiotic agent for very favorable effects, and was considered to achieve the therapeutic objectives by the intramuscular injection in a daily dose of 120 mg.
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