Pulmonary Embolism

Posted by e-Medical PPT Monday, August 16, 2010
Pulmonary embolism is a blockage of the main artery of the lung or one of its branches by embolism. Usually this is due to embolism of a thrombus from the deep veins in the legs. A small proportion is due to the embolization of air, fat or amniotic fluid. The obstruction of the blood flow through the lungs and the resultant pressure on the right ventricle of the heart leads to the symptoms and signs of PE. The risk of PE is increased in various situations, such as cancer and prolonged bed rest.Symptoms of pulmonary embolism include Dyspnea,Pleuritic chest pain,Anxiety,Cough,Hemoptysis,Sweating,Syncope.Clinical signs include low blood oxygen saturation and cyanosis, rapid breathing, and a rapid heart rate. Severe cases of PE can lead to collapse, abnormally low blood pressure, and sudden death.
Diagnosis is based on these clinical findings in combination with laboratory tests (such as the D-dimer test) and imaging studies, usually CT pulmonary angiography.

XRAY findings in PE include
  • Westermark's sign- A dilation of the pulmonary vessels proximal to the embolism along with collapse of distal vessels, sometimes with a sharp cutoff
  • Hampton’s Hump- A triangular or rounded pleural-based infiltrate with the apex toward the hilum, usually located adjacent to the hilum.

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1 Response to Pulmonary Embolism

  1. Anonymous Says:
  2. amazing lecture,, enjoyed every slide of it,, simplicity & clarity r the reasons why i liked it :)
    thank u


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