CSF evaluation - Cytology and Infectious Disease Diagnostics

  • CSF evaluation - Cytology and Infectious Disease Diagnostics
CSF is predominantly formed in the:
Brain tissue.
Ventricles by the choroid plexus.
Spinal canal.
Peripheral blood.
CSF is usually collected from which anatomical location in dogs?
Atlanto-occipital/cerebellomedullary cistern (cisterna magna).
Lumbar cistern.
Thoracic spinal canal.
Peri-ocular region.
After collection, CSF should ideally be analysed within:
1 week.
24 hours.
12 hours.
60 minutes
The best tube for storage of non-blood contaminated CSF an:
EDTA tube.
Serum tube,
Completely plain tube (no additives).
Lithium heparin tube.
Normal CSF is:
Colourless and clear.
Colourless and cloudy.
Red and cloudy.
Yellow and clear.
The total WBC count in CSF is determined by:
Measurement on an automated haematology analyser
A smear evaluation.
Counting on a haemocytometer.
Measurement on a biochemistry analyser.
The predominant cells in normal CSF are:
Mononuclear cells.
Epithelial cells.
Blood contamination of CSF can affect:
WBC count only.
Protein concentration only.
WBC count and protein concentration.
WBC count, protein concentration and WBC differential count.
An increased total WBC count in CSF is termed a:
Albuminocytological dissociation.
A negative bacterial culture of CSF may occur due to to:
A low number of bacteria being present.
The organisms are confined to the brain tissue.
The patient has had previous antibiotic treatment.
All of the above.