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exudative, because this has little diagnostic value. In this video, you'll find out why that's the case and how to determine the cause of a pericardial effusion so you can take next steps.",{"id":215,"name":216},1,"Course previews",[218,229,234,239,246],{"type":219,"data":220},"video",{"readDurationInSeconds":221,"video":222},164,{"platform":223,"name":224,"url":225,"size":226},"YouTube","Analyzing pericardial fluid pericardial effusion analysis","https:\u002F\u002Fwww.youtube.com\u002Fwatch?v=uSfBowkH2Ug",{"width":227,"height":228},200,113,{"type":230,"data":231},"free_text",{"readDurationInSeconds":232,"text":233},10.933333333333334,"\u003Cp> \u003Cstyle type=\"text\u002Fcss\">\u003C!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> \u003C\u002Fstyle> Testing done on pericardial fluid will not usually tell you whether a pericardial effusion is transudative or exudative, because this has little diagnostic value. In this video, you'll find out why that's the case and how to determine the cause of a pericardial effusion so you can take next steps.\u003C\u002Fp>",{"type":230,"data":235},{"readDurationInSeconds":236,"title":237,"text":238},19.466666666666665,"Join our Body Fluid Lab Essentials course now!","\u003Cp>Learn how to obtain bodily fluid samples, order the right tests, and quickly diagnose your patient’s problem with this course.\u003C\u002Fp>\u003Cp>From time to time, we send various bodily fluids to the laboratory—but are we ordering the right tests on these fluids to come to an accurate diagnosis? After this course, you will be comfortable ordering and interpreting bodily fluid analyses. You will understand the clinical implications of lab abnormalities and will know what to do about them.\u003C\u002Fp>",{"type":240,"data":241},"cta",{"readDurationInSeconds":242,"text":243,"buttonText":244,"buttonUrl":245},3.466666666666667,"Become a great clinician with our video courses and workshops","Start learning for free","https:\u002F\u002Fwww.medmastery.com\u002Fuser\u002Fregister",{"type":230,"data":247},{"readDurationInSeconds":248,"title":249,"text":250},58.666666666666664,"Video transcript","\u003Cp>In contrast to investigations of other body fluids, establishing whether a pericardial effusion is transudative or exutative does not have significant diagnostic value. As such, parameters to differentiate between exudative, and transudative effusions such as protein, glucose, and lactate dehydrogenase, are not tested on pericardial fluid.\u003C\u002Fp>\u003Cp>If the initial history and physical examination do not suggest a specific diagnosis, extensive laboratory testing, seeking an etiology is unlikely to be helpful. Some patients with pericardial effusion have an idiopathic cause. Gram stain, acid-fast bacilli stain and bacterial cultures would need to be done on the pericardial fluid if infection is suspected to be the cause.\u003C\u002Fp>\u003Cp>If tuberculous pericarditis is suspected, culture should be done along with adenosine deaminase, interferon gamma, and lysozyme testing. PCR studies can be performed for viral infections, for example identifying cytomegalovirus in a transplant patient. However, the yield of PCR remains fairly low in many instances. Cytology is also helpful to rule out malignancies. Further testing can be done on the serum to look for other causes of pericardial effusion. The complete blood count would highlight leukocytosis or lymphocytosis due to an infectious cause.\u003C\u002Fp>\u003Cp>Leukocytosis would also be seen in inflammatory states, and after myocardial infarction. Chemistry profile and renal function tests would establish renal failure. Thyroid function tests would naturally help to identify hypothyroidism. 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