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Cefazolin in the Treatment of Bacterial Pneumonia
Marvin Turck, Robert A. Clark, Harry N. Beaty, King K. Holmes, Walter W. Karney and L. Barth Reller
The Journal of Infectious Diseases
Vol. 128, Supplement. Clinical Symposium on Cefazolin (Oct., 1973), pp. S382-S385
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/30106071
Page Count: 4
You can always find the topics here!Topics: Bacterial pneumonia, Antibiotics, Inoculum, Broths, Cephalosporins, Klebsiella, Haemophilus influenzae, Bacteria, Pathogens, Infections
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Cefazolin sodium was tested in vitro against isolates of Diplococcus pneumoniae, Staphylococcus aureus, Klebsiella pneumoniae, and Haemophilus influenzae. Each isolate was tested with at least two inoculum sizes of organisms. Cefazolin also was studied in the treatment of 82 patients with bacterial pneumonia. In concentrations ≤ 1 μg/ml, cefazolin inhibited all isolates of D. pneumoniae and S. aureus, whereas with a larger inoculum of bacterial cells, approximately 10% of K. pneumoniae and H. influenzae grew in concentrations of 25 μg of antibiotic per ml. Penicillin-sensitive as well as penicillin-resistant isolates of S. aureus were killed by ≤ 1 μg of cefazolin per ml when the inoculum contained 10⁴ bacteria per ml; however, 25 μg/ml was required to kill 100% of the strains when the inoculum size was increased 100-fold. Clinically, cefazolin treatment appeared to be effective in 74 of 82 patients with pneumonia. Pain was not prominent after im injection, and thrombophlebitis was not observed in those treated by iv injection.
The Journal of Infectious Diseases © 1973 Oxford University Press