Bacteremia
Bacteremia - Related Videos
08:32
Assessment of Intestinal Transcytosis of Neonatal Escherichia coli Bacteremia Isolates
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Cited by 1 •
2023
Escherichia coli causes sepsis in neonates who ingest the bacteria around the time of birth. The process involved in E. coli’s ability to travel from the enteric tract to the bloodstream is poorly understood. This in vitro model assesses the ability of E. coli strains to travel through the intestinal epithelial cells.
08:25
Visualization of Streptococcus pneumoniae within Cardiac Microlesions and Subsequent Cardiac Remodeling
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Cited by 11 •
2015
Streptococcus pneumoniae forms discrete non-purulent microscopic lesions in the heart. Outlined is the protocol for a murine model of cardiac microlesion formation. Instruction is provided on microlesion visualization using microscopy, discrimination between early and late microlesions, and methods to detect cardiac remodeling in hearts of convalescent animals.
13:29
Rapid Identification of Gram Negative Bacteria from Blood Culture Broth Using MALDI-TOF Mass Spectrometry
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Cited by 1 •
2014
The application of matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry (MS) directly to blood culture broth expedites the identification of bacteria. The presented method is a rapid and reliable method for identification of Gram negative bacteria directly from blood culture broth.
15:43
Long Term Chronic Pseudomonas aeruginosa Airway Infection in Mice
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Cited by 78 •
2014
We describe the agar-beads method to establish persistent long-term chronic Pseudomonas aeruginosa airway infection in the mouse model.
FAQs
Transient bacteremia may resolve without causing major harm, whereas persistent bacteremia indicates that bacteria remain in circulation and may continue affecting distant tissues. This distinction helps clinicians judge the urgency of evaluation, treatment, and monitoring. Persistent infection raises concern for progression to sepsis, organ involvement, or complications such as endocarditis.
Bacteria may enter through damaged tissue, invasive medical procedures, or an infection located elsewhere in the body. Once in the bloodstream, they can circulate beyond the original site, making the underlying source important to identify. Finding and addressing that source supports treatment and reduces the likelihood that bacteremia will continue or spread.
Circulating bacteria can activate the immune system throughout the body rather than only at the original infection site. If this response becomes severe or the infection persists, the illness may progress to sepsis and organ dysfunction. Clinical assessment and laboratory testing help identify worsening disease so treatment and monitoring can begin promptly.
Blood cultures are central because they can help identify bacteria present in the bloodstream and determine the causative organism. Clinicians also combine culture results with physical assessment and laboratory testing to evaluate the patient’s condition. Together, these findings support decisions about antimicrobial therapy, urgency, monitoring, and the need to investigate an infection source.
Results from blood cultures can identify the organism responsible for the infection, allowing clinicians to select targeted antimicrobial therapy rather than relying only on a nonspecific approach. Treatment decisions also depend on clinical assessment and laboratory findings. Using this information together improves the ability to address the infection and monitor whether it is resolving.
Antimicrobial therapy addresses the bacteria, but clinicians must also manage the infection site that allowed entry into the bloodstream. Source control helps limit continued spread, while monitoring can detect progression toward endocarditis, organ dysfunction, sepsis, or other serious outcomes. Prompt, coordinated management is therefore important even when the initial bloodstream finding changes over time.