Synovial Fluid Flashcards
Non selective ultrafiltrate of plasma
Synovial fluid
Fxn of synovial fluid
Lubricates joints
Reduce friction
Provides nutrients
Lessen shock
What do u call the collection of synovial fluid
Arthrocentesis
Normal adult knee is
< 3.5 mL
Fasting before arthrocentesis
4-6 hrs
Fluid from disease joint may contain
Fibrinogen
Anticoagulant used for gram stain and culture
Sterile heparin or SPS
Anticoagulant use for cell counts
Liquid EDTA and heparin
Anticoagulant use for glucose analysis
Sodium fluoride
Normal appearance of synovial fluid
Clear or pale yellow
Deeper yellow signifies
Inflammation
Greenish tinge signifies
Infxn
Red signifies
Trauma
Milky signifies
Presence of crystals
String tedt measures ______ to be considered as normal
4-6 cm
Ropes or mucin clot test reagent
2-5% of acetic acid
Normal synovial fluid in ropes or mucin clot test forms
Solid clot surrounded by clear fluid
Grading of synovial fluid imusing ropes or mucin clot test
Good: solid clot
Fair: soft clot
Low: friable clot
Poor: No clot
If synovial fluid is present in toluidine blue test, the drops of fluid will stain_____
Blue color
Very viscous fluid may pre- treated by adding
1 drop of 0.05% hyaluronidase in phosphate buffer per mL of fluid and incubate at 37 celsius for 5 mins
Diluent use for synovial fluid
Normal saline
Crystal found in synovial fluid
Monosodium urate
Calcium pyrophosphate
Apatite
Cholesterol
CaOx
Corticosteroids
Common organism that infects the synovial fluid
Staphylococcus
Streptococcus
Haemophilus
N. gonorrhoea
Most frequently requested test in synovial fluid
Glucose
The difference between blood glucose anf synovial fluid glucose shoul be
< 10 mg/dL
Normal synovial fluid PROTEIN contains
< 3 g/dL
Increased level of protein are found in
Inflammatory and hemorrhagic disorders
T od F:
Synovial fluid URIC ACID is equal to the blood value
True
Increased lactic acid level is associated with
Septic arthritis
