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Patient's with Rett's syndrome usually develop normally until age what? a. 18-24 months b. 3-6 months c. 6-18 months d. 2-4 years - Answer- c. 6-18 months Which of the following is most likely to be associated with a normal EEG? a. left frontal subdural hematoma b. left frontal abscess c. acoustic neuroma d. cerebellar abscess - Answer- d. cerebellar abscess During an absence seizure the technologist should? a. stop recording and go to the patient's aid b. turn the patients he...

THE FILTERS CREATING A VERY NARROW BAND PASS THAT SHOULD RARELY BE USED CLINICALLY ARE___? - Answer- LF 5.0 HZ AND HF 15 HZ DURING THE RECORDING OF CEREBRAL ACTIVITY, THE CALIBRATION INPUT VOLTAGE IS CHANGED FROM 50 ocV to 100 ocV. WHAT WILL THE RESULT BE? - Answer- NO EFFECT ON THE ACTIVITY BEING RECORDED A spike is printed out on paper and measures 16mm peak to peak, the sensitivity of the instrument is 7uV/mm and a calibration signal of 50uV causes a deflection of 7.1mm...what is the vo...

Opposition to flow of alternating current is? - Answer- Resistance In general terms, what does the frequency response curve have to do with? - Answer- Filters What time constant would best display delta? - Answer- 0.3 or 2.0 Time constant is also known as? - Answer- LFF EEG amplifier - if input 1 is relatively more negative than input two, which way would the deflection go? - Answer- Up EEG's obtained during sleep are of most value in the study of? - Answer- Seizures Triphasic...

Once EEG data is acquired there is an expectation that the information will be protected. This means - Answer- all staff are accountable for protecting the patient confidentiality Temporal Lobe Epilepsy accounts for what % of all patients with epilepsy? - Answer- 60% Precocious puberty is associated with pathology of the - Answer- hypothalamus What clinical signs are expected to be seen if a patient has a stroke involving the left anterior cerebral artery? - Answer- Right lower extremit...

The basic unit for measuring current flow is? a. Atomic weight b. Volt c. Ampere d. Coulomb - Answer- Ampere Which is not a unit for measuring alternating frequencies? a. Cycles per second b. Volts c. Hertz d. Kilocycles - Answer- Volts Which describes the action of a capacitor? a. Opposes changes in current flow b. Converts alternating current to direct current c. Creates a direct current resistance d. Stores electrical energy - Answer- Stores electrical energy ...

The EEG amplifier is designed so that when input 1 is more negative than input 2, the deflection will be - Answer- UPWARD Common Mode Rejection - Answer- the characteristic of an amplifier that rejects external interference WHICH OF THE FOLLOWING IS MOST ATTENUATED BY A LOW FREQUENCY FILTER OF 1HZ - Answer- 0.1 HZ TIME CONSTANT IS DEFINED AS THE TIME REQUIRED TO... - Answer- FOR THE DEFLECTION TO FALL (DECAY) TO 67% OF THE PEAK DEFLECTION An EEG record has 3/sec spike & wave discharg...

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Which if the following blood tests is used to diagnose gout? A. Alkaline phosphatase (ALP) B. Amylase C. Uric acid D. Creatinine - Answer- C. Uric acid Select the equation which is used to determine the pH of a solution containing a weak acid and its salt. A. Van Deemter equation B. Van Slyke equation C. Nernst equation D. Henderson-Hasselbalch equation - Answer- D. Henderson-Hasselbalch equation All of the following are directly involved in the production of semen EXCEPT? A...

All of the following donors would be permanently deferred EXCEPT which one? - Answer- 38-year-old male who received rabies vaccine after a dog bite 3 months ago All of the following donors would be permanently deferred: - Answer- 75-year-old male who had acute hepatitis 20 years ago following surgery, 19-y/o first-time donor who received human growth hormone 12 years ago, and a 24-y/o donor with a history of a positive test for Hepatitis C from another blood center. What is the interval be...

What is hemoglobin composed of? - Answer- 4 heme, 4 iron, 4 globins What disorder does a defect in heme synthesis lead to? - Answer- porphyria What is the function of the enzyme methemoglobin-cytochrome C reductase in a red blood cell? - Answer- to keep iron in the ferrous state Which hemoglobin has a 200 times greater binding capacity for the hemoglobin molecule than oxygen? - Answer- carboxyhemoglobin What product is formed when ferrous iron of hemoglobin is oxidized to the ferric ...

Specimens that can be analyzed for carbon dioxide - Answer- 1. Serum 2. Plasma 3. Whole blood What will happen if blood is exposed to air during specimen collection for pH and blood gases? - Answer- p C O 2 decreases Henderson-Hasselbalch equation - Answer- p H = p k a + log salt / acid What is the ratio of bicarbonate:carbonic acid in normal plasma - Answer- 20:1 Lab results on a known diabetic patient revealed a decreased bicarbonate and decreased ph. Which acid base disorder wou...

What agency approves new test methodologies, instrument, and reagents before they are available for purchase by consumers - Answer- Food and Drug Administration (FDA) How often should biological safety hoods be inspected - Answer- annually What is the minimum number of standards required for a standard curve - Answer- 3 What is the maximum magnification using a bright field microscope - Answer- 1000X What is the most accurate pipette for reconstituting control material - Answer- glas...

What agency approves new test methodologies, instruments, and reagents before they are available for purchase by consumers? - Answer- FDA How often should biological safety hoods be inspected? - Answer- Annually A chain of custody is required for all of the following: - Answer- Legal blood alcohol, pre-employment drug screen, and paternity testing A chain of custody is required for all of the following, EXCEPT: - Answer- Fetal fibronectin What federal legislation regulates most clini...

All of the following blood donors would be permanently deferred except which one? - Answer- 38yr old male who received rabies vaccine after a dog bite 3mos ago What is the interval blood donations? - Answer- 8 weeks The oral temperature of a donor must not exceed which value? - Answer- 37.5C 99.5F What is the minimum acceptable hemoglobin for blood donors? - Answer- 12.5 g/dL for allogeneic donors What is the lowest acceptable hematocrit for allogeneic blood donors? - Answer- 38% ...

Which of the four elements in proteins differentiated this class of substances from carbohydrates and lipids? - Answer- Nitrogen Which of the proteins is soluble in water? - Answer- Albumin How are amino acids joined together to form a chainlike structure? - Answer- Peptide bonding Proteins may become denatured when subjected to mechanical agitation, heat, or chemical treatment. What does denaturation of proteins refer to? - Answer- Alteration of tertiary structure Which aminoacidopa...

Which of the following aminoacidopathies is NOT caused by an enzyme deficiency? Choose one answer. a. phenylketonuria b. alkaptonuria c. maple syrup disease d. cystinuria - Answer- d. cystinuria What method is most commonly used to measure total protein? Choose one answer. a. dye binding b. Kjeldahl c. Biuret d. refractometry - Answer- c. Biuret Which of the following is the preferred reagent for measuring albumin by the dye binding method because there is less inte...

Which of the following is not an external defense mechanism of natural immunity that provides the human body with a defense against invading microorganisms? - Answer- Bursa of Fabricius All of the following are external defense mechanisms of natural immunity that provides the human body with a defense against invading microorganisms - Answer- Skin, mucus, and body fluids Having an elevated temperature during an infection is an example of what type of immunity? - Answer- Innate immunity ...

What agency approves new test methodologies, instruments, and reagents before they are available for purchase by consumers? - Answer- FDA How often should biological safety hoods be inspected? - Answer- Annually What is the minimum number of standards required for a standard curve? - Answer- 3 What is the maximum magnification using a brightfield microscope? - Answer- 1000X What is the most accurate pipette for reconstituting control material? - Answer- Glass volumetric pipettes W...

What term describes the morphology of organisms that vary in size and shape? - 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 the dark staining granules called? - Answer- metachromatic Which organisms are nonmotile? - Answer- Shigella and Klebsiella In the bacterial growth cycle, growth ceases because n...

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 c...