Бак. посев отделяемого из коньюктивы глаза (левого) на микрофлору с определением чувствительности к антибиотикам

Aerobic and facultative anaerobic bacterial culture with antibiotic susceptibility testing and minimal inhibitory concentration (MIC) determination is used to distinguish aerobic from anaerobic etiologies of infection and to identify the causative organism. The test informs targeted antimicrobial therapy by characterizing in vitro susceptibility and MIC values for recovered isolates, which supports selection of an effective agent when treating acute, latent, or chronic infections, including those due to fastidious bacteria. Clinicians may see this described as aerobic culture, aerobic/ facultative anaerobe culture, or bacterial culture with MIC.

Anaerobic bacteria are organisms that do not require oxygen for growth; for many species, oxygen is toxic. They are part of the normal human microbiota of the gastrointestinal tract, respiratory tract, and genitourinary system. Disruption of mucosal barriers or impaired host defenses can permit endogenous flora to invade tissues and cause inflammation; less commonly, exogenous inoculation occurs with penetrating trauma, contaminated procedures, or intra‑abdominal and thoracic injuries. Anaerobic soft‑tissue infections may present with tense edema, gas in tissues, putrid inflammation, and a fetid odor. Surgical management is central to care, including source control and wound opening to allow oxygen exposure, which is detrimental to obligate anaerobes. Aerobic organisms require molecular oxygen for energy generation, and successful culture depends on appropriate media, controlled oxygen tension, and optimal temperature. Facultative anaerobes metabolize via anaerobic pathways but can grow in the presence of oxygen, in contrast to obligate anaerobes that cannot survive oxygenated conditions. Each organism has a characteristic range of oxygen tolerance that influences recovery in the laboratory. Culture assists in differentiating aerobic from anaerobic involvement by isolating organisms from clinical specimens and defining the etiologic agents of the inflammatory process. This assay recovers aerobic and facultative anaerobic flora. Following isolation, antimicrobial susceptibility testing with MIC determination is recommended to guide therapy. Given the prevalence of antimicrobial resistance, empiric selection based solely on expected spectra may be ineffective; susceptibility testing identifies the agent with the highest in vitro activity for the specific isolate.