New Quiz 26 Jan Welcome to your MLT- Professional Name: Email: Phone Number: [The Coulter principle for counting of cells is based upon the fact that:] Isotonic solutions conduct electricity better than cells do Conductivity varies proportionally to the number of cells Cells conduct electricity better than saline does Isotonic solutions cannot conduct electricity None . [Factor V Leiden promotes thrombosis by preventing:] Deactivation of factor Va Activation of factor V Activation of protein C Activation of protein S None . [A patient has several short lengths of IV-type tubing protruding from his chest. This is most likely a/an] A-line. CVC. implanted port. PICC. None . [Urine with an SG consistently between 1.002 and 1.003 indicates:] Acute glomerulonephritis Renal tubular failure Diabetes insipidus Addison’s disease None . [Which of the following tests requires an arterialized specimen?] Bilirubin CBGs Electrolytes Glucose None . [Factor XII deficiency is associated with:] Bleeding episodes Epistaxis Decreased risk of thrombosis Increased risk of thrombosis None . [What antibodies could an R1R1 make if exposed to R2R2 blood?] Anti-e and anti-C Anti-E and anti-c Anti-E and anti-C Anti-e and anti-c None . [Which condition is most often associated with a high serum iron level?] Nephrosis Chronic infection or inflammation Polycythemia vera Noniron deficiency anemias None . [Commonly measured ABG parameters include:] pH. PaCO2. O2 saturation. All of the above. None . [Semisolid transport media such as Amies, Stuart, or Cary–Blair are suitable for the transport of swabs for culture of most pathogens except:] Neisseria gonorrhoeae Enterobacteriaceae Campylobacter fetus Streptococcus pneumoniae None . [Which of the following conditions is associated with a chylous effusion?] Necrosis Pulmonary infarction or infection Systemic lupus erythematosus or rheumatoid arthritis Lymphatic obstruction None . [Which of the following blood vessels are listed in the proper order of blood flow?] Aorta, superior vena cava, vein Arteriole, venule, capillary Capillary, venule, vein Vein, venule, capillary None . [Which of the following antibodies is used in the D-dimer assay?] Polyclonal directed against X and Y fragments Polyclonal directed against D-dimer Monoclonal against D and E fragments Monoclonal against D-dimer None . [The method for measuring iron or lead by plating the metal and then oxidizing it is called:] Polarography Coulometry Anodic stripping voltometry Amperometry None . [What term describes the products produced when DNA is digested by restriction endonucleases?] Mosaicisms Chimeras Amplicons Restriction fragment length polymorphisms None . [In what suspected condition should a wet prep using a warm slide be examined?] Cryptococcal meningitis Amoebic meningoencephalitis Mycobacterium tuberculosis infection Neurosyphilis None . [Which anemia is characterized by a lack of intrinsic factor that prevents B12 absorption?] Tropical sprue Transcobalamin deficiency Blind loop syndrome Pernicious anemia None . [The microbiology department in the laboratory performs:] compatibility testing. culture and sensitivity testing. electrolyte monitoring. enzyme-linked immunoassay. None . [For which clinical specimens is the KOH direct mount technique for examination of fungal elements used?] Skin CSF Blood Bone marrow None . [The phrase “first-pass hepatic metabolism” means that:] One hundred percent of a drug is excreted by the liver All drug is inactivated by hepatic enzymes after one pass through the liver Some drug is metabolized from the portal circulation, reducing bioavailability The drug must be metabolized in the liver to an active form None . [Which condition can result in acidosis?] Cystic fibrosis Vomiting Hyperaldosteronism Excessive O2 therapy None . [In an outbreak of diarrheal disease traced to a municipal water supply, the most likely causative agent is:] Cryptosporidium spp. Cystoisospora belli Entamoeba histolytica Dientamoeba fragilis None . [Which of the following is associated with antithrombin deficiency?] Thrombocytosis Thrombosis Thrombocytopenia Bleeding None . [In the Kauffmann–White schema, the combined antigens used for serological identification of the Salmonella spp. are:] O antigens H antigens Vi and H antigens O, Vi, and H antigens None . [Which outcome indicates a negative result in a complement fixation test?] Hemagglutination Absence of hemagglutination Hemolysis Absence of hemolysis None . [All of the following are usually found in Hgb C disease except:] Hgb C crystals Target cells Lysine substituted for glutamic acid at the sixth position of the β–chain Fast mobility of Hgb C at pH 8.6 None . [Potential problems using EDTA anticoagulant and holding the blood too long prior to preparation of thick and thin blood films include:] Changes in parasite morphology, loss of organisms within several hours, and poor staining Loss of Schuffner’s dots, poor adherence of the blood to the glass slide, and parasites beginning the vector cycle within the tube of blood Neither A nor B All of these options None . [Refer to the following scatterplot, histograms, and automated values on a 28-year-old woman who had preoperative laboratory testing. A manual WBC differential was requested by her physician. The WBC differential was not significantly different from the automated five-part differential; however, the technologist noted 3+ elliptocytes/ovalocytes while reviewing the RBC morphology. What is the most likely diagnosis for this patient? (fig )] Disseminated intravascular coagulation (DIC) Hereditary elliptocytosis (ovalocytosis) Cirrhosis Hgb C disease None Comment . [Sickle cell disorders are:] Hereditary, intracorpuscular RBC defects Hereditary, extracorpuscular RBC defects Acquired, intracorpuscular RBC defects Acquired, extracorpuscular RBC defects None . [Congenital dyserythropoietic anemias (CDAs) are characterized by:] Bizarre multinucleated erythroblasts Cytogenetic disorders Megaloblastic erythropoiesis An elevated M:E ratio None . Time's up
