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Pleural Fluid Analysis:

Pleural fluid is found in the pleural cavity and serves as a lubricant for the movement of the lungs during inhalation and exhalation. It is derived from a plasma filtrate from blood capillaries and is found in small quantities between the layers of the pleurae membranes that cover the chest cavity and the outside of each lung.

There are two main reasons for fluid

accummulation :
1- Fluid may accumulate in the pleural space because of an imbalance between the pressure within blood vessels which drives fluid out of blood vessels and the amount of protein in blood which keeps fluid in blood vessels. The fluid that accumulates in this case is called a transudate . This type of fluid usually involves both lungs and is often a result of either cirrhosis or congestive heart failure.

2-Fluid accumulation may be caused by injury or inflammation of the pleurae, in which case the fluid is called an exudate. It usually involves one lung and may be seen in infections (pneumonia, tuberculosis, sarcoidosis), malignancies (lung cancer, metastatic cancer, lymphoma,mesothelioma), rheumatoid disease, or systemic lupus erythematosus.
The test used to
diagnose the cause of inflammation of pleurae (pleuritis, pleurisy), accumulation of fluid in the pleural space (pleural effusion), or possible malignancy

the way of sample obtaining

fluid is collected by a doctor using a procedure called thoracentesis, in part to relieve pressure and for diagnostic purposes

هو السائل المحيط بالرئة وهو بمثابة تشحيم للرئة فى اثناء حركتها خلال عمليتى الشهيق والزفير وهذا السائل مستمد من البلازما.

هناك سببين لتراكم هذا السائل:

1- يتراكم السائل نتيجة اختلال الضغط داخل الاوعية الدموية ويطلق على السائل الذى يتراكم فى هذه الحالة
transudate

2- يكون سبب تراكم السائل عن إصابة أو التهاب pleurae

وفي هذه الحالة السائل يسمى exudate
وهذا نتيجة لبعض الامراض مثل الالتهاب الرئوى والسل وسرطان الرئة والاورام الليمفاوية وامراض المفاصل والذئبة الحمراء

هذا الاختبار يستخدم ل

تشخيص سبب التهاب ال pleurae

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	sunmoon
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