Acid fast bacilli Study guides, Class notes & Summaries

Acid-Fast Bacillus (AFB) Staining (Ziehl-Neelsen) Answer Used for the diagnosis of tuberculosis, tuberculous infections and leprosy. Organisms will appear red against a blue background when stained by this method. Usually takes 2-3 weeks to culture the tubercle bacilli. Results of the AFB stain may indicate the need for the initiation of therapy. Airway Resistance (Raw) Answer Estimated for patients on mechanical ventilation by determining the difference between peak airway pressure and plate...

What term describes the morphology of organisms that vary in shape and size? Pleomorphic i.e. coccobacilli Bacteriology arrangements: -pairs (diplococci "N. Gon"; diplobacilli -chains (streptococci, streptobacilli) -grape like clusters (staphylococci) -group of four-tetrads (peptococcus) -packets of eight-cuboidal (sarcina) -palisades (corneybacterium) Capsules are the basis of which test? serotyping and identification (capsules are antigenic); they are observed usi...

When using an electronic cell counter, which of the following results can occur in the presence of a cold agglutination? a) increased MCV and decreased RBC b) increased MCV and normal RBC c) decreased MCV and increased MCHC d) decreased MCV and RBC - Answer- a) increased MCV and decreased RBC Cerebrospinal fluid for glucose assay should be: a) refrigerated b) analyzed immediately c) heated to 56 degree C d) stored at room temp after centrifugation - Answer- b) analyzed immediately The majo...

Uark microbiology lab practical 1 rated A Coccus A spherical bacterium. Bascillus Rod shaped bacteria Spirillum A spiral-shaped bacterium. Uses of good bacteria on our bodies, in yogurt, and can be used to clean up oil and radiation colony visible mass of cells Innoculation putting bacteria into a medium what is the purpose of aseptic technique -no contaminating organisms are introduced into culture materials during handling or inoculation -handler and other people are not contaminated by ...

What's the bacteria that causes TB? - Myobacterium Tuberculosis S/S of TB - Persistent Cough Chest Pain Weakness Anorexia Hemoptysis Weight loss Night sweats Fever (low grade, in afternoon) Chills How many % of people will develop active TB? - 5 to 10% What are some risk factors of TB? - Age Homeless, poverty, poor access to health care Foreign-Born Persons Poorly, Ventilated, Crowded Environments Substance Abuse Immunosuppression How do you know for sure that a patient has a p...

definitive dx of tuberculosis sputum smears for acid-fast bacilli (AFB) three times, sputum or tissue culture for AFB (gold standard) "string of beads" sign fibromuscular dysplasia (renal artery stenosis) who should fibromuscular dysplasia be considered in younger patients with hypertension, patients with resistant hypertension, those with hypertension and elevated creatinine, or individuals with hypertension and asymmetric kidney size. What heart sound is common during the acute phas...

Define the term Microbiology correct answers The study of microorganisms and their relationships to the environment, humans and animals in disease Name the 5 classifications of microorganisms correct answers Bacteria, Virus, Mycobacterium, Fungi, Parasites Blood agar is the most commonly used media in the clinical laboratory. What type of media is blood agar? correct answers Enriched media, Differential media (detection of Beta-hemolytic organisms) List some agars that are generally use...

CSMLS questions and answers well illustrated. Which is the most critical part of a biological safety cabinet? a. location in the laboratory b. high efficiency particulate air filter c. personal protective equipment d. power source available - correct answers.High Efficiency Particulate Air Filter what is the function of a catalyst in a anaerobic jar? a. keeps excessive condensation from forming b. keeps toxic levels of carbon dioxide from building up c. only w...

What term describes the morphology of organisms that vary in shape and size? - Answer-Pleomorphic Capsules are the basis of which test? - Answer-Serotyping A mucoid colony on blood agar medium indicates that which of the following characteristics may be present? - Answer-Organism has a capsule. What are dark staining granules called? - Answer-Metachromatic Which of the following organisms are non-motile? - Answer-Shigella and Klebsiella In the bacterial growth cycle, growth ceases because ...

WGU C453 Clinical Microbiology Exam Questions with 100% Correct Answers Bacteria -Answer-Single-celled organism that do not have a cell nucleus and the membrane-enclosed intracellular structures found in most other cells (Prokaryotic cell). Gram-positive Bacteria -Answer-Thick layer of peptidoglycan (20-80nm across). The peptidoglycan layer is closely attached to the outer surface of the cell membrane. Retains crystal violet stains. Lack an outer membrane and a periplasmic space. Gram-neg...