Final 2639L Flashcards
Stomatocyte
* coffee bean look
* cell folded
* usually seen with hypochromasia
Acanthocytes
* uneven distributions
* see with hemolytic anemia, liver disease, hemangiosarcoma, or DIC
Eccentrocyte
* hemoglobin concentrated to one side of cell
* oxidative injury of RBC
* Dog: zinc or onion toxicity
* Cat: tylenol, lymphoma, diabetes, hyperthyroid
Avian Eosinophil
* Round cell, light blue cytoplasm
* Granule size varies with species, but will be uniform within same patient
* Granules brighter than heterophils
Avian Heterophil
* Correspond to neutrophils
* Most common WBC in birds
* Round cell, colorless cytoplasm
* Brick red / rod shaped granules
* 2-3 lobed nucleus
Promyelocyte
* WBC series
* 2nd in line
* large nucleus
* nucleoli may be present
* pink/red granules noted
Prorubricyte
* RBC series
* 2nd in series
* nuclear material dense and clumped
* basophilic cytoplasm
Multinucleation
* multiple nuclei within cell
Barr Cell - Knizocyte
Megakaryocyte
* platelet series
* multiple condensed nuclei
* large size
* not counted in M:E ratio
Avian Basophil
* Small round cell
* Centrally located nucleus
* Nucleus often hidden by granules
* Granules are deeply basophilic
* Cytoplasm (if seen) is colorless to light purple/red
Starfish Smear
* doesn’t damage fragile cells
* can have thick, unreadable areas
Myelocyte
* WBC series
* 3rd in line
* greater nucleus-to-cytoplasm ratio
* granules throughout cytoplasm
* where distinction of E, N, B
Spherocytes
* lack central pallor
* macrophages partially eating antibody coating on cell
* see in IMHA
Compression Smear
* do not apply downward pressure - can lead to ruptured cells
Metamyelocyte
* granules present in cytoplasm
* nucleus indented or “kidney-bean” shape
* nucleus smaller than before
* cytoplasm a lighter blue
Schistocytes
* fragments of RBCs sheared from intravascular trauma
* see with DIC
Rubriblast
* RBC series
* most immature
* large cell with large nucleus
* multiple nucleoli
* basophilic cytoplasm
* possible mitotic figures
Howell-Jolly Bodies
* nuclear remnant inside RBC
* sign of regeneration
* if no reticulocytes seen, consider macrophage dysfunction (splenic)
Metarubricyte
* RBC series
* also called nRBCs
Rubricyte
* RBC series
* 3rd in line
* hemoglobin being produced
* polychromatophilic
* blue/pink cytoplasm
Myeloblasts
* WBC steries
* most immature
* multiple nucleoli
* large nucleus
* scant cytoplasm
Line Smear
* similar to blood, but lift straight up at the end
* best if sample has low cellularity
* line will be very cellular
Echinocytes
* even distributions
* caused by crenation or too much EDTA
* sign of renal disease
Modified Compression Smear
* less tendency to rupture cells
Keratocyte
* blister cells
* caused by oxidative injury to cell or intravascular trauma
* see with liver disease
Thrombocytes
* do not call them platelets in birds
Heinz Bodies
* oxidation and denaturation of hemoglobin in RBC
* common in cats
* caused by ingestion of onions, tylenol, and certain drugs
Classify Aspirate
Lymphoblastic Leukemia
* lymphoblasts present
Aging Neutrophils
Neutrophil Morphology Change
- Hypersegmented
- Pyknotic
Anisocytosis
- Abnormal variation in RBC size
- Slight, Moderate, or Marked
Identify Nuclear
Abnormality
Anisokaryosis
* variable nuclear size
Avian Monocytes
- Largest WBC
- Irregular cell size
- Bilobed or round nucleus
- Blue grey cytoplasm; granular appearance
- +/- vacuoles
Benign Neoplasia
- Cant differentiate between this and hyperplasia
- No criteria of malignancy
- Increased number of cells - uniform appearance
Canine Blood Types
8 Blood Groups
* DEA 1-8
* DEA 1.1 and 1.2 are major antigens
* DEA 1.1 universal
Canine Blood Types
DEA 1.1 and 1.2
- Can be either negative for both or positive for one or the other (but not both)
- Negatives do not have natural antibodies - acute hemolytic reaction if mixed with Positives
- First transfusion ok to do without crossmatch, but antibodies will become known after
Description of nucleus
Coarse Chromatin Pattern
* will appear ropy or cordlike
* multiple variations of color within nucleus
Criteria of Malignancy
Exceptions
Rule does not apply if
* inflammation if present
* only a few cells display malignancy
Histopathology required to verify
Crossmatch Procedure
“Control” Combo
Performed with Recipient blood to check for auto-agglutination (may indicate auto-immune disease)
* 2 parts Recipient plasma
* 1 part Recipient cells (RBC suspension)
Crossmatch Procedure
“Major” Combo
- 2 parts Recipient plasma
- 1 part Donor cells (RBC suspension)
Crossmatch Procedure
“Minor” Combo
- 2 parts Donor plasma
- 1 part Recipient cells (RBC suspension)
Crossmatching Procedure
Perform if been longer than 4-7 days since last crossmatch
* collect blood from both D and R into EDTA tubes
* centrifuge for 5 minutes to separate plasma from packed RBCs
* transfer plasma from each into new tubes
* “wash” packed RBCs with saline 3 times
* make RBC suspension (1 drop RBC : 20 drops saline)
* make Major, Minor, and Control tubes
* incubate for 15-30 minutes
* centrifuge briefly
* examine tubes for hemolysis and macro agglutination
* make slide and examine for micro agglutination
Cytology
Study of cells
* looks at a SINGLE cell
* cytopathology = study of diseased cells
* differentiate between inflammation and neoplasia (cancer)
Cytology Advantages
- Non-invasive
- Inexpensive
- Out-patient procedure
- Rapid results (1-2 days)
Cytology Disadvantages
- Only used as a screening tool - not to be a diffinitive diagnostic
- Can produce false negatives
Determine Time of Breeding
- Serum levels of P4 and LH
- Microscopic evaluation of vaginal cells
Dysplasia
- Step above hyperplasia
- Cells starting to show signs of malignancy, but not enough to call it cancer
Effusion
Accumulation of fluid within anatomic space
* pleural: thorax
* peritoneal/ascites: abdomen
* pericardial: heart
Effusion Analysis
- Protein content
- TNCC
- Types of cells present
(inflammatory vs neoplastic)
Inflammation
Eosinophilic
Consists of increased neutrophils and >10% eosinophils of TNCC
* see with parasitic or neoplasitc disorders
Epithelial Tumors
- Lines skin, MM, glandular structures
- Benign = adenoma
- Malignant = carcinoma / adenocarcinoma
Erythroid Series
Characteristics
- Darker basophilic blue cytoplasm
- Circular nucleus
Estrogen
- Rises early in proestrus
- Peaks prior to estrus
- Declines in estrus
- Suppresses LH release
Estrous Cycle Stages
(in order)
- Proestrus
- Estrus
- Diestrus
- Anestrus
Exudate
Basic
- High Protein
- High TNCC
Exudate
- Variable amount
- Turbid, white or slightly yellow
- Protein: >3 g/dL
- TNCC: >7000 /uL
- Neutrophils, macrophages, lymphocytes, eosinophils
- See with inflammation response - increasing permeability of capillaries (infection, necrosis)
Feline Blood Types
1 Blood Group
* A
* B
* AB
Feline Blood Types
Crossmatching
Always crossmatch before transfusion, even first round
* anti-antibodies in both types A and B blood can result in illness / death
* type AB can get type AB or Type A blood (type B has too high of antibodies)
* type A getting type B blood = mild reaction
* type B getting type A blood = severe reaction +/- death
Feline Blood Types
Antibodies
- Type B has anti-A antibodies
- Type A has anti-B antibodies
- Type AB has no antibodies
Feline Blood Types
How Common
A
* most common of domestics
B
* most common with exotic breeds
AB
* Uncommon
* Universal recipient