Exam 11: Synovial Fluid

Fluid obtained from the knee of a 60-year-old man who has been experiencing episodes of severe pain for several years has the following results: -Based on the information provided,what is the most probable diagnosis?

Normal synovial fluid glucose values are 60% to 70% of the blood glucose.

To determine if an unknown fluid is synovial fluid,the fluid can be tested:

A clear,pale yellow synovial fluid with good viscosity and a WBC count of 1000 should be classified as:

A synovial fluid with a normal WBC count from a patient with a normal serum uric acid contains extracellular birefringent crystals under polarized light.A possible reason for this finding is that the:

Crystals that appear to be rhombic-shaped and are blue when aligned with the slow vibration of red compensated polarized light are:

A milky-appearing synovial fluid can be associated with the presence of:

Fluid obtained from the knee of a 60-year-old man who has been experiencing episodes of severe pain for several years has the following results: -Based on the information provided,when aligned with the slow vibration of red compensated polarized light,what is the most probable color of the crystals?

Crystals seen in the synovial fluid from a patient previously diagnosed with gout exhibit positive birefringence when observed under red compensated polarized light.The most probable cause of this discrepancy is:

Fluid obtained from the knee of a 60-year-old man who has been experiencing episodes of severe pain for several years has the following results: -Based on the information provided,what classification of arthritis is indicated by these results?

In addition to routine culture media,synovial fluid cultures should include:

Synovial fluid crystals seen in patients undergoing renal dialysis most commonly are:

Three tubes of blood-streaked synovial fluid from the elbow of a 40-year-old tennis player are delivered to the laboratory with a request for a WBC count,differential,crystal analysis,glucose,and Gram stain. -Based on the information provided,what type of diluting fluid should be used for the WBC count?

The predominant cell in normal synovial fluid is the lymphocyte.

In the Ropes' or mucin clot test,normal synovial fluid:

Three tubes of blood-streaked synovial fluid from the elbow of a 40-year-old tennis player are delivered to the laboratory with a request for a WBC count,differential,crystal analysis,glucose,and Gram stain. -Based on the information provided,what is the significance of the blood-streaked fluid?

Vacuolated macrophages containing ingested neutrophils seen in synovial fluid are called:

An arthrocentesis is performed on a patient with lupus erythematosus that produces a cloudy yellow fluid with 2000 WBCs,of which 55% is neutrophils.This fluid should be classified as:

Fat droplets seen in synovial fluid are associated with:

All of the following can cause crystals to be present in the synovial fluid except: