x ray appearance of pericardial tamponade ? - USMLE Forums
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Old 05-24-2011
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Default x ray appearance of pericardial tamponade ?

there was a question on usmle world they mention all typical sign of pericardial tamponade ( beck's triad )

but in chest x-ray they mention ( small left side pleural effusion , normal cardiac contour, normal cardiac silhouette )


i thought in pericardial tamponade we will find a huge pericardium in chest xray


so any explanation about chest xray of pericardial tamponade
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Old 05-25-2011
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http://emedicine.medscape.com/articl...3-workup#a0720
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Old 05-25-2011
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yes it should show increased cardiac shadow but in usmle world

that question confuse me they said on chest xray ( normal cardiac silhouette ) but they mention JVD , muffled heart sound ....
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Old 05-25-2011
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I think it depends on whether the tamponade is acute or chronic. Acute onset can occur with as little as 100 ml of fluid, whereas chronic tamponade can have fluid collections well over 1 L.
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