Saddle pulmonary embolism
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At the time the article was created Jeremy Jones had no recorded disclosures.View Jeremy Jones's current disclosures
At the time the article was last revised Craig Hacking had the following disclosures:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.View Craig Hacking's current disclosures
If large enough, it can completely obstruct both left and right pulmonary arteries resulting in right heart failure and, unless treatment is prompt, death.
With such extensive embolic burden, signs of right heart strain are usually present and include:
- dilatation of the right ventricle (RV) (i.e. RV width > left ventricular width)
- straightening or leftward bulging of the interventricular septum
- enlargement of the pulmonary trunk
Contrast reflux into the azygos vein, via the superior vena cava, and hepatic veins, via the inferior vena cava, is a controversial sign of RV strain, as it often occurs in the absence of raised right-sided heart pressures.