Fluid Analysis

What are the samples for Fluid Analysis?

• The fluid for the analysis is:
  1. Ascitic fluid.
  2. Pleural fluid.
  3. Pericardial fluid.
  4. Amniotic fluid.
  5. Cerebrospinal fluid.
  6. Semen analysis.
  7. Cervical mucus test.
  8. Joint fluid (synovial fluid).
  9. Sweat chloride test.
  10. Urine analysis.

What are the indications for Fluid Analysis?

1. To diagnose the cause of the fluid.
2. This could be therapeutic.
3. To diagnose the diseases.

What are the precautions for Fluid Analysis?

1. The fluid analysis should be performed immediately to prevent false results caused by cellular or chemical deterioration.
2. Follow precautions if there is a delay in the testing of the fluid.

How will you discuss the pathophysiology of Fluids?

1. Effusions from the abdomen, pleura, pericardium, and joints are classified into exudate and transudate.
2. Exudates are caused by inflammatory, infectious, or neoplastic diseases.
3. Transudates are caused by venous congestion, hypoproteinemia, and fluid overload.
4. Some fluids are analyzed to diagnose diseases, such as sweat for cystic fibrosis.

What are the various procedures for obtaining fluids?

1. Lumbar puncture for CSF.
2. Amniocentesis to get fluid from the uterus.
   1. This fluid is aspirated from the amniotic sac.
   2. It is used for genetic, chromosomal, and fetal abnormalities.
3. Pericardiocentesis for pericardial fluid.
4. Thoracentesis for pleural fluid.
5. Paracentesis for the peritoneal fluid.
6. Arthrocentesis for the fluid from the joints.

What are the parameters tested in the fluid analysis?

1. Gross appearance.
2. Specific gravity
3. Total protein
4. LDH level.
5. Total cell count.
6. Microscopic examination for the differential count.
7. Cytospin for the cytological examination.
8. In the case of CSF, the glucose level is estimated.
9. In some cases, an AFB or Gram stain is done.
10. Fluid analysis is used to diagnose the etiology of fluid formation, and it may also be therapeutic.

What are the therapeutic advantages of Fluid Analysis?

1. Fluid aspirated from the pleural cavity improves ventilation and oxygenation.
2. Fluid from the Peritoneum relieves the pressure and eases breathing and eating.
3. Aspirated joint fluid relieves pain and improves function.
4. Fluid aspirated from the pericardial cavity improves diastolic filling and cardiac output.

What is the Difference between various fluids?

TP = Total protein

MN = Mononuclear cells.

How will you compare Transudate and Exudate?

• Please see more details in Fluid Part 3.

Questions and answers: