Review of chap39 for Hematology 1 DelTech Owens
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Point of Care Testing describes a test that is __ in complexity. | low
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| What are the 2 basic principles at work in hematology instrumentation? | electrical impedance and optical scatter
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| How many drops of blood are required to run an automated test with modern equipment? | Ten drops
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| Automated instruments offer greater __ and precision. | accuracy
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| If blood cells stick together as they pass through the aperture of an automated instrument, the result will be a falsely __ cell count. | decreased
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| One way to correct bad cell counts on automated machines is to __ the blood sample. | dilute
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| If results of a blood cell count has dire consequences for the patient, you must call the patient's __. | doctor
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| The majority of labs in the area use __ brand cell counters. | Coulter
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| Coulter cell counters work on the principle of __ impedance. | electrical
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| On a Coulter machine, the amplitude (or height) of each pulse is proportional to cell __. | size
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| Coulter machines use VCS technology, allowing them to measure __, __, and __ __. | volume, conductivity, light scatter
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| Coulter machines can report a false increase in HGB if WBCs in the sample are __. | elevated
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| Coulter machines can report a false increase in HGB if lipids in the sample are __. | elevated
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| Coulter machines can report a falsely increased MCV and RBC count is the sample has cold __. | agglutination
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| Coulter machines can report a falsely increased MCV count if the blood sample has __. | rouleaux
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| The letter "R" beside a result means the lab technician should __ the machine's results. | review
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| On a platelet histogram, the __ is a measure of the average volume of platelets in a sample and is analogous to the erythrocyte MCV. | MPV
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| In normal patients, there is an inverse relationship between platelet __ and size. | count
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| Platelet volume increases as platelet count __. | decreases
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| Patients with a low platelet count have a lower __. | MPV
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| Young platelets are __ and cause an increased MPV. | larger
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| If the platelet count is normal, then an MPV between 7.4 and 10.4 fl is in the __ range. | normal
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| The rule of three: RBC x 3 = __. | HGB
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| The rule of three: HGB x 3 = __. | HCT
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| __ controls monitor the performance of the volume, conductivity, and light scatter for the automated differential. | Latron
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| What kind of graph can be used to monitor the control values for each parameter of the cell counter? | Levey-Jennings
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| The analyzer is considered accurate when the MCV, MCH, and MCHC of a batch of 20 patients are within __ percent of the expected mean indices. | three
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| __ checks are another method of quality control. (The missing word means "difference.") | Delta
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| Don't forget to use the "Targets" button below the test to try your hand at reading scatter plots! |
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