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Hem1 Chp15 DelTech
Reveiw of Chapter 15 Hematology 1 for DelTech Owens
| Question | Answer |
|---|---|
| Blood smears should be made with __ to __ hours of collection. | two to three |
| Sources of blood specimens may come from __ tubes, which are lavender in color. | EDTA |
| EDTA __ the calcium in the blood specimen. | chelates |
| After two to three hours of blood collection, __ will appear in a blood smear. | artifacts |
| When blood platelets surround or adhere to the segs in a blood smear, this is called __. | satellitosis |
| A longer, nine syllable word for satellitosis is __. | pseudothrombocytopenia |
| EDTA can cause satellitosis. To avoid this, __ citrate may be used. Or you can vortex the specimen. | sodium |
| A polychrome stain contains __ and methylene blue. | eosin |
| Methanol is a stain __. | fixative |
| Staining reactions are __ dependent. | pH |
| Methylene blue stain is __ so it stains acids like RNA. | basic |
| Eosin is __ so it stains basics, like HGB and eosinophilic granules. | acidic |
| High humidity can cause burr cells, or __ in blood samples. | echinocytes |
| A good peripheral smear will be stained __ to __ in color when Wright stained. | pink to purple |
| The RBCs in a good peripheral smear will be __ to salmon __ in color if Wright stained. | orange to salmon pink |
| The WBCs in a good peripheral smear will have __ to __ color nuclei if Wright stained. | purple to blue |
| The cytoplasm of neutrophils should be __ to __ in color if properly Wright stained and smeared. | pink to tan |
| The granules of neutrophils should be __ to __ in color if properly Wright stained and smeared. | salmon to pink |
| Holes in a peripheral smear suggest the sample has too much __. | lipid |
| Cold agglutinin will give an RBC smear a __ appearance. | grainy |
| If you find __ strands in the smear, you should reject it. | fibrin |
| A good area to perform a peripheral blood exam on a smear is one where the blood cells are __ touching. | barely |
| No more than __ or __ blood cells should overlap when choosing an area on a blood smear to perform an exam. | two or three |
| The average number of WBCs per high power field should be multiplied by __ to get an approximate total WBC count. | two-thousand |
| A systematic method for performing a WBC differential is called the __ pattern. | battlement |
| To get an approximate count of platelets in a blood smear, you multiply the number of oil immersion fields counted by __. | twenty-thousand |
| Leukocytosis means the white blood cell count is __. | elevated |
| Leukopenia means the WBC count is __. | low |
| A left shift during a WBC counts means the cells are __. | immature |
| When the mean cell volume is within reference range, it is __. | normocytic |
| When the mean cell volume is below reference range, it is __. | microcytic |
| When the mean cell volume is above reference range, it is __. | macrocytic |
| If the number of platelets is high, this is called __. | thrombocytosis |
| If the number of platelets is low, this is called __. | thrombocytopenia |
| MPV stands for __ __ __. | mean platelet volume |
| Name 3 macroscopic reasons for rejecting a blood smear. | 1) wrong color 2)grainy 3) holes |
| Name 3 microscopic reasons for rejecting a blood smear. | 1) wrong color or distribution of cells 2)fibrin strands 3) large cells/blasts |
| What can cause RBCs to appear grey, WBCs too dark, or eos to look grey instead of orange? | Stain is too alkaline. Inadequate rinsing. Prolonged staining. Sample is heparinized. |
| What can cause RBCs to become too pale or red, and WBCs to become barely visible? | Stain too acidic. Underbuffering. Over-rinsing. |
| Why are manual platelets counts performed? | To verify automated platelet counts. |
| Which objective is used when performing a manual platelet count? | 100x (oil) |
| How many oil immersion fields are counted when performing the platelet estimate procedure? | ten |
| To get the approximate platelet count, the average number of platelets per oil immersion field is multiplied by __. | twenty-thousand |
| Increases in neutrophils are called __. | neutrophilia |
| Decreases in neutrophils are called __. | neutropenia |
| Increases in eosinophils are called __. | eosinophilia |
| Increases in lymphocytes are called __. | lymphocytosis |
| Decreases in lymphocytes are called __. | lymphopenia |
| Increases in monocytes are called __. | monocytosis |
| Decreases in monocytes are called __. | monocytopenia |
| Labs examine hemoglobin for test for __. | anemia |
| Labs examine MCV to assess __ __. | cell size |
| Labs examine MCHC to assess __ __. | hemoglobin concentration |
| Labs examine red cell distribution width (RDW) to assess __. | anisocytosis |
| If MCV is within reference range, it is __. | normocytic |
| If MCV is below reference range, it is __. | microcytic |
| If MCV is above reference range, it is __. | macrocytic |
| Younger platelets are __. | large |
| Older platelets are __. | small |
Created by:
IsaacJ
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