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What is the purpose of serous fluid?
What is the purpose of serous fluid?
Provides lubrication between the parietal and the visceral membranes in order to prevent friction between the two membranes due to the movement of the enclosed organs.
Explain why congestive heart failure will cause a serous effusion.
Explain why congestive heart failure will cause a serous effusion.
Increased hydrostatic pressure.
Explain why hypoproteinemia will cause a serous effusion.
Explain why hypoproteinemia will cause a serous effusion.
Decreased oncotic pressure.
Explain why inflammation will cause a serous effusion.
Explain why inflammation will cause a serous effusion.
Explain why a lymphatic tumor will cause a serous effusion.
Explain why a lymphatic tumor will cause a serous effusion.
Why is differentiation of a serous fluid as a transudate or an exudate of diagnostic significance?
Why is differentiation of a serous fluid as a transudate or an exudate of diagnostic significance?
State a pathologic condition that causes production of a transudate and an exudate.
State a pathologic condition that causes production of a transudate and an exudate.
Describe the characteristic appearance of a transudate.
Describe the characteristic appearance of a transudate.
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Study Notes
Purpose of Serous Fluid
- Lubricates parietal and visceral membranes to prevent friction during organ movement.
Conditions Causing Serous Effusion
- Congestive Heart Failure (CHF): Results in increased hydrostatic pressure.
- Hypoproteinemia: Leads to decreased oncotic pressure, affecting fluid retention.
- Inflammation: Causes increased capillary permeability, allowing more fluid to escape.
- Lymphatic Tumor: Often results in lymphatic obstruction, impeding fluid drainage.
Importance of Fluid Classification
- Differentiating between transudate and exudate aids in initial diagnosis and guides future laboratory tests.
Pathologic Conditions for Fluid Types
- Transudate Causes: Congestive heart failure, nephrotic syndrome.
- Exudate Causes: Commonly seen in infections and malignancies.
Characteristics of Transudate
- Typically appears clear with low protein content.
- Fluid-to-serum protein ratio and LD ratios are critical for classification, with specific results serving as reliable indicators.
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