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[Clinical analysis of 8 cases of paradoxical embolism]

Chang-ming Xiong1, Zhi-hong Liu, Xian-sheng Cheng

  • 1Pulmonary Vascular Disease Center, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China.

Zhonghua Jie He He Hu Xi Za Zhi = Zhonghua Jiehe He Huxi Zazhi = Chinese Journal of Tuberculosis and Respiratory Diseases
|May 9, 2006
PubMed
Abstract

Insights

Paradoxical embolism, a condition where venous clots travel to systemic arteries, is not rare. Diagnosis is crucial when venous thromboembolism presents with systemic embolism or an unknown cause.

Area of Science:

  • Cardiology
  • Neurology
  • Vascular Medicine

Background:

  • Paradoxical embolism occurs when a venous thrombus bypasses the pulmonary circulation and enters systemic arterial circulation.
  • Diagnosis can be challenging, often requiring a high index of suspicion.

Observation:

  • This study analyzed eight cases of paradoxical embolism, with common presentations including cerebral and kidney artery embolism.
  • Only three cases showed a patent foramen ovale with a right-to-left shunt, highlighting that this is not always present.
  • The diagnosis was confirmed in only one case, with the remainder being clinical diagnoses based on venous thrombus at arterial-venous communication.

Findings:

  • Paradoxical embolism is an underdiagnosed condition that can complicate venous thromboembolism.
  • Systemic embolism in the context of venous thromboembolism or with an unknown etiology warrants consideration of paradoxical embolism.
  • Clinical diagnosis is often relied upon due to the difficulty in confirming the presence of a venous thrombus at an arterial-venous communication.

Implications:

  • Improved diagnostic strategies are needed to identify paradoxical embolism more effectively.
  • Early recognition and management can prevent severe systemic complications.
  • Further research into the specific diagnostic criteria and imaging techniques for paradoxical embolism is warranted.

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