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antibiotic sensitivity test

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antibiotic sensitivity test,
a laboratory method for determining the susceptibility of organisms to therapy with antibiotics. After the infecting organism has been recovered from a clinical specimen, it is cultured and tested against a panel of antibiotic drugs (the specific panel is determined by whether the organism is gram-positive and gram-negative). If the growth of the organism is inhibited by the action of the drug, it is reported as sensitive to that antibiotic. If the organism is not susceptible to the antibiotic, it is reported as resistant to that drug. See also sensitivity test.

antibiotic
1. destructive of life.
2. a chemical substance produced by a microorganism that has the capacity, in dilute solutions, to kill (biocidal activity) or inhibit the growth (biostatic activity) of other microorganisms. Antibiotics that are sufficiently nontoxic to the host are used as chemotherapeutic agents in the treatment of infectious diseases. See also antimicrobial.
3. used as feed additives to animals as growth promotants.

anthracycline a's
a group of antibiotics which have a tetracycline ring structure substituted with the sugar daunosamine. Includes the antineoplastic drugs doxorubicin and daunorubicin.
antineoplastic antibiotic
bactericidal antibiotic
one that kills bacteria.
bacteriostatic antibiotic
one that suppresses the growth of bacteria.
broad-spectrum antibiotic
one that is effective against a wide range of bacteria.
antibiotic detection
on-farm and prepackaged laboratory tests available for testing farm products and animal tissues and fluids for antibiotic residues.
antibiotic drugs
the range includes the following groups: penicillin, aminoglycoside, tetracycline, chloramphenicol, macrolide, nitrofuran, cephalosporins, and a miscellaneous group including bacitracin, tyrothricin, polymyxin, colistin.
antibiotic feed additives
see feed additives.
first generation antibiotic
one produced as a natural product, e.g. penicillin G. See second generation antibiotic (below).
antibiotic food preservation
is a satisfactory technique but very strictly controlled because of the problem of residues in the food. Used mostly for the preservation of fish.
antibiotic-induced diarrhea
see pseudomembranous colitis, acute undifferentiated diarrhea of the horse.
antibiotic residue in food
in human food of animal origin is a seriously regarded pollution in public health surveillance. The residues may arise from systemic administration, or even after absorption from a local site such as the uterus, but the most serious contamination arises from milk from quarters that have been treated for mastitis. It is essential for the safety of the human population, the financial well-being of the farmer and the professional reputation of the veterinarian that antibacterial withdrawal times are observed.
antibiotic resistance
see antimicrobial resistance.
second generation antibiotic
produced by manipulation of the molecular structure of a first generation antibiotic (see above) so that the metabolism and pharmacodynamics of the original compound are significantly altered.
antibiotic sensitivity test
see antimicrobial sensitivity test.
antibiotic therapy
antibiotics vary in their absorption from the alimentary tract, requiring some, e.g. streptomycin, to be given parenterally for systemic effect, freedom from toxicity, the range of bacteria against which they are effective, their capacity to stimulate resistance and whether they are bacteriostatic or bactericidal in their effects. Selection of the most suitable antibiotic to suit a particular circumstance may be guided by an antimicrobial sensitivity test, knowledge of the infection present and the price of the drug. In many instances, because of lack of knowledge of the infection present it is necessary to choose an agent with a broad antibacterial spectrum.
antibiotic withdrawal, antibiotic withholding
see antibacterial withdrawal time.


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Zone of inhibition assay--This is an agar diffusion test much like that cited in USP <81> for antibiotic sensitivity tests and also cited in USP <87> for cytotoxic tissue culture screening for in-vitro bioreactivity.
Our microbiologic laboratory does not routinely perform antibiotic sensitivity tests on this anaerobic organism, and optimal antibiotic selection for these patients is not clear.
Ordinary culture of purulent discharge and antibiotic sensitivity tests were conducted on nine patients, and they were treated with appropriate antibiotics via intravenous or intramuscular injection.
 
 
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Antibiotic marker
Antibiotic Medium 3
antibiotic ointment
antibiotic premedication
antibiotic premedication
antibiotic premedication
Antibiotic prophylaxis
Antibiotic prophylaxis
Antibiotic prophylaxis
Antibiotic prophylaxis
antibiotic residue in food
antibiotic residue in food
antibiotic residue in food
antibiotic residue in food
Antibiotic resistance
Antibiotic resistance
Antibiotic resistance
Antibiotic resistance
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Antibiotic Resistance in Bacteria from Animal Origin
Antibiotic Resistance Marker Gene
Antibiotic Resistance Monitoring and Reference Laboratory
Antibiotic Resistance Surveillance & Control in the Mediterranean
Antibiotic Resistance, Prevention and Control
Antibiotic resistant
Antibiotic Resistant Neutropenic Fever
Antibiotic Resistant Organisms
Antibiotic Responsive Lyme-Like Syndrome
antibiotic sensitivity & identification
antibiotic sensitivity test
antibiotic sensitivity, antimicrobial sensitivity
antibiotic sensitivity, antimicrobial sensitivity
antibiotic sensitivity, antimicrobial sensitivity
antibiotic sensitivity, antimicrobial sensitivity
antibiotic therapy
antibiotic therapy
antibiotic therapy
antibiotic therapy
antibiotic therapy
Antibiotic Therapy for Bacterial Sinusitis
antibiotic tongue
antibiotic tongue
antibiotic tongue
antibiotic withdrawal, antibiotic withholding
antibiotic withdrawal, antibiotic withholding
antibiotic withdrawal, antibiotic withholding
antibiotic withdrawal, antibiotic withholding
antibiotic-associated colitis
antibiotic-associated colitis
antibiotic-associated colitis
Antibiotic-associated diarrhea
Antibiotic-associated diarrhea
Antibiotic-associated diarrhea
Antibiotic-associated diarrhea
antibiotic-associated enteritis
antibiotic-associated enterocolitis
antibiotic-associated enterocolitis
antibiotic-associated enterocolitis
Antibiotic-Associated Pseudomembranous Colitis
Antibiotic-Associated-Colitis
 
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