Abstract
Sixty-six patients with confirmed or suspected methicillin-resistant Staphylococcus aureus (MRSA) infections were treated with imipenem/cilastatin sodium (IPM/CS) 0.5 g every 12 hours combined with cefotiam hydrochloride (CTM) 2 g every 12 hours. The drugs were administered as either simultaneous or separate (IPM/CS→CTM) drip infusions. The results were as follows: 1) Using the checkerboard agar-dilution method the mean fractional inhibitory concentration (FIC) index of 48 strains of MRSA isolated before concomitant therapy with IPM and CTM was 0.217. 2) Bacteriologically, MRSA was eradicated in 23 patients, decreased in 10 and unchanged in 12. Superinfection occured in 6 patients, and the status of 2 was unknown. The eradication rate was 56.9%. 3) Fifteen (78.9%) of the 19 strains of organisms isolated concomitantly with MRSA were eradicated. More specifically, 7 of 10 strains of Pseudomonas aerginosa were eradicated. 4) Clinical cure was observed in 77.4% of the patients. Treatment was required because of respiratory tract infections in 29 patients including 25 with pneumonia), wound infections in 15, infections secondary to burns in 2, intra-abdominal infections in 2, subcutaneous infections in 2, intrapelvic infection in 1, urinary tract infection in 1 and sepsis in 1. 5) The overall clinical effect was excellent in 11 patients, good in 28 and poor in 12. The efficacy rate was 76.5%. 6) No statistically significant difference in overall clinical efficacy was observed between the simultaneous and separaee infusion protocols. 7) The coagulase type of the MRSA was II in the case of 23 strains, III in 16, IV in 3 and VII in 6. There were no statistically significant differences in efficacy rates among the various coagulase types. 8) Adverse effects observed clinically consisted of nausea in 2 patients, nausea and vomiting in 1 patient and diarrhea in 1 patient. Laboratory abverse events consisted of hepatic enzyme elevation in 8 patients. These abverse events were all mild and transient. In conclusion, IPM/CS combined with CTM is useful in the treatment of MRSA infections.
Original language | English |
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Pages (from-to) | 654-672 |
Number of pages | 19 |
Journal | CHEMOTHERAPY |
Volume | 40 |
Issue number | 5 |
DOIs | |
Publication status | Published - May 1992 |
Externally published | Yes |
Keywords
- MRSA
- cefotiam hydrochloride
- imipenem/cilastatin sodium
ASJC Scopus subject areas
- Pharmacology (medical)
- Infectious Diseases
- Pharmacology
- Drug Discovery
- Oncology