Microbiology
Name a media that is selective for Gram positive organisms.
What is Columbia Nalidixic Acid agar?
This is the most common cause of anemia in both hospitalized and ambulatory patients in the United States.
What is anemia of chronic disease?
Presents endogenous antigen to CD8+ T cells.
What are class I MHC molecules?
An electrolyte contributes the most to serum osmolality.
What is sodium?
A patient with a prosthetic heart valve visits the dentist for her yearly checkup, which resulted in the removal of a tooth. Two weeks later, she presents to her primary car physician with a high fever, chills, and shortness of breath. This organism is the most likely cause of this patient's symptoms.
What is Streptococcus mutans or Viridans Strep?
This test is used to assess red blood cell lysis in a hypotonic environment.
What is the osmotic fragility test?
These two letters may be marked on a serological pipette, also known as a blowout pipette.
What are TC?
Hyperalbuminemia is most often seen in this clinical condition.
What is dehydration?
These two autoimmune diseases are preceded by infections with beta hemolytic streptococci.
What are Rheumatic fever and acute glomerulonephritis?
This term describes erythrocytes that are released prematurely into circulation due to increased EPO stimulation.
What is a stress/shift reticulocyte?
Method which measures light that is scattered at a particular angle from the incident beam as it passes through a suspension.
What is nephelometry?
Hyperaldosteronism frequently presents with a decreased concentration in this electrolyte.
What is potassium?
Clostridium difficile is identified in the clinical microbiology laboratory using this methodology?
What is molecular testing or antigen testing for the toxin?
A patient with a microcytic hypochromic anemia has the following iron studies results: serum iron, serum ferritin, and % sat decreased; TIBC increased.
What is iron deficiency anemia?
What is the cellular mechanism of Type I hypersensitivity reactions?
An electrophoretic technique is considered a reflex test following the presentation of an M spike on serum protein electrophoresis.
What is immunofixation electrophoresis?
A specimen from a foot ulcer of a 52-year-old male diabetic patient was sent to the microbiology laboratory for culture. The following results were obtained from a clear colony from MAC agar: OF Tubes: oxidizer, catalase positive, oxidase positive, growth at 42ᵒC positive. This organism is the most likely cause of this patient’s infection.
What is Pseudomonas aeruginosa?
Calculate the MCHC using the following values: Hgb 15 g/dL, Hct 47%, and RBC 4.5 x 1012/L.
What is 32% (31.9%)?
This method calls for a patient sample to react with particles that are coated with reagent antibody. Agglutination indicated the presence of specific antigen in the patient sample.
What is reverse passive agglutination?
An emphysema patient suffering from fluid accumulation in the alveolar spaces is likely to be in this metabolic state?
What is respiratory acidosis?