SYNOVIAL FLUID Flashcards
(51 cards)
Synovial fluid is also known as?
Joint fluid
It is a viscous liquid found in the cavities of the movable joints (diarthroses) or synovial joints
Synovial fluid
Functions of synovial fluid:
- Lubricate joints
- Reduce friction between bones
- Provides nutrients to the articular cartilage
- Lessen shock of joint compression occurring during activities such as walking and jogging
Masakit sa arthritis =
Watery synovial fluid
It is the polymerization of hyaluronic acid
viscosity
Decrease of synovial fluid viscosity =
arthritis
Method of collection for synovial fluid
arthrocentesis
Normal synovial fluid does not ________
Clot (diseased joint may clot)
Synovial fluid
Normal volume in adult knee cavity =
Inflammation =
<3.5 mL
>25 mL
SF:
Colorless - pale yellow (clear) =
normal
SF:
Deeper yellow =
inflammation
SF:
Greenish tinge
Bacterial infection
SF:
Red =
Traumatic tap, hemorrhagic arthritis
SF:
Turbid =
WBCs, synovial cell debris, fibrin
SF:
Milky =
Presence of crystals
SF:
Plain red top tube (no anticoagulant) =
Chemical and immunologic evaluation
SF microscopic examination:
Sodium Heparin/ liquid EDTA =
Hematology or cell count
SF microscopic examination:
Do not use ________ and _________
Do not _______ samples
Powdered anticoagulants
Lithium heparin
refrigerate
SF:
Sterile anticoagulant tube ( heparin or SPS) =
Microbiological studies (GS and culture)
Synovial fluid viscosity normal value =
Forms a string that is 4-6 cm long
Test for SF viscosity
Ropes or Mucin Clot test (Hyaluronate Polymerization test)
Ropes or Mucin clot test:
Reagent =
Positive reaction (hyaluronic acid + acetic acid) =
2-5% acetic acid
Mucin clot
Grading for SF viscosity:
Good =
Fair =
Low =
Poor =
Solid or compact clot, clear solution
Soft clot
Priable clot, cloudy solution
No clot
Most frequently performed count in synovial fluid
WBC count
