Biomaterial Database

Interpretation criteria for sensitivity testing of ceftriaxone in agar diffusion test according to the DIN 58940 method. 1984

H Grimm

On the basis of a regression analysis of the correlation between minimal inhibitory concentration (MIC) and inhibitory zone diameter, interpretative criteria are established for the agar diffusion test with ceftriaxone disks (30 micrograms) in DST agar according to the DIN method. The correlation is good (r = -0.9242); the regression equation is x = -0.43 y + 20.53 (y = inhibitory zone diameter, x = log2MIC + 9). Following appropriate discussion, provisional MIC breakpoints of 8 and 32 mg/l are proposed for ceftriaxone. On the basis of these threshold values, the following criteria are established for interpreting the inhibition zone of ceftriaxone: resistance (corresponding to an MIC of 64 mg/l and more up to 15 mm; moderate sensitivity (corresponding to an MIC of 16-32 mg/l) 16-19 mm; sensitivity (corresponding to an MIC of up to 8 mg/l) 20 mm and more.

UI	MeSH Term	Description	Entries
D008826	Microbial Sensitivity Tests	Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses).	Bacterial Sensitivity Tests,Drug Sensitivity Assay, Microbial,Minimum Inhibitory Concentration,Antibacterial Susceptibility Breakpoint Determination,Antibiogram,Antimicrobial Susceptibility Breakpoint Determination,Bacterial Sensitivity Test,Breakpoint Determination, Antibacterial Susceptibility,Breakpoint Determination, Antimicrobial Susceptibility,Fungal Drug Sensitivity Tests,Fungus Drug Sensitivity Tests,Sensitivity Test, Bacterial,Sensitivity Tests, Bacterial,Test, Bacterial Sensitivity,Tests, Bacterial Sensitivity,Viral Drug Sensitivity Tests,Virus Drug Sensitivity Tests,Antibiograms,Concentration, Minimum Inhibitory,Concentrations, Minimum Inhibitory,Inhibitory Concentration, Minimum,Inhibitory Concentrations, Minimum,Microbial Sensitivity Test,Minimum Inhibitory Concentrations,Sensitivity Test, Microbial,Sensitivity Tests, Microbial,Test, Microbial Sensitivity,Tests, Microbial Sensitivity
D002439	Cefotaxime	Semisynthetic broad-spectrum cephalosporin.	Benaxima,Biosint,Cefotaxim,Cefotaxime Sodium,Cefradil,Cephotaxim,Claforan,Fotexina,HR-756,Kendrick,Klaforan,Primafen,Ru-24756,Taporin,HR 756,HR756,Ru 24756,Ru24756,Sodium, Cefotaxime
D002443	Ceftriaxone	A broad-spectrum cephalosporin antibiotic and cefotaxime derivative with a very long half-life and high penetrability to meninges, eyes and inner ears.	Benaxona,Cefatriaxone,Cefaxona,Ceftrex,Ceftriaxon,Ceftriaxon Curamed,Ceftriaxon Hexal,Ceftriaxona Andreu,Ceftriaxona LDP Torlan,Ceftriaxone Irex,Ceftriaxone Sodium,Ceftriaxone Sodium, Anhydrous,Ceftriaxone, Disodium Salt,Ceftriaxone, Disodium Salt, Hemiheptahydrate,Lendacin,Longacef,Longaceph,Ro 13-9904,Ro-13-9904,Ro13-9904,Rocefalin,Rocefin,Rocephin,Rocephine,Tacex,Terbac,Anhydrous Ceftriaxone Sodium,Ro 13 9904,Ro 139904,Ro13 9904,Ro139904
D000362	Agar	A complex sulfated polymer of galactose units, extracted from Gelidium cartilagineum, Gracilaria confervoides, and related red algae. It is used as a gel in the preparation of solid culture media for microorganisms, as a bulk laxative, in making emulsions, and as a supporting medium for immunodiffusion and immunoelectrophoresis.
D001419	Bacteria	One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.	Eubacteria
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor