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Chylothorax associated with thrombosis of the cranial vena cava
Ameet Singh1, Brigitte A Brisson
1Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1. amsingh@uoguelph.ca
Insights
Concurrent chylothorax and cranial vena caval (CrVC) thrombosis in pets is linked to jugular devices. Prompt assessment for these conditions is crucial in animals with respiratory signs.
Area of Science:
- Veterinary Medicine
- Cardiology
- Internal Medicine
Background:
- Concurrent chylothorax and cranial vena caval (CrVC) thrombosis is a rare but serious condition in veterinary medicine.
- Identifying predisposing factors and understanding the relationship between these two conditions is essential for effective management.
Observation:
- A review of four cases revealed that jugular device implantation was a common predisposing factor for CrVC thrombosis.
- The thrombosis was extensive, extending from the jugular vein to the cranial aspect of the heart in all reviewed cases.
Findings:
- Chylothorax resolved in three out of four cases following medical and/or surgical interventions.
- The development of concurrent chylothorax and CrVC thrombosis appears to be dependent on the thrombus's extent and location.
Implications:
- Veterinary patients with indwelling jugular devices presenting with acute respiratory distress should be evaluated for concurrent chylothorax and CrVC thrombosis.
- This finding highlights the importance of considering device-related complications in the differential diagnosis of respiratory signs in veterinary patients.
Abstract:
This study reviewed confirmed cases of concurrent chylothorax and cranial vena caval (CrVC) thrombosis in dogs and cats, and determined predisposing factors for the development of chylothorax associated with CrVC thrombosis. The extent and location of the thrombus, the treatment regime, and the outcome are described. In all 4 cases, implantation of a jugular device was a predisposing factor to thrombosis of the CrVC, and there was extensive thrombosis of the CrVC extending from at least 1 jugular vein to just cranial to the heart. Chylothorax resolved in 3 of the 4 cases after medical and/or surgical intervention. The development of chylothorax concurrently with thrombosis of the CrVC in dogs and cats is likely dependent on the extent and location of the thrombus. Veterinary patients with indwelling jugular devices that develop acute respiratory signs should be assessed for chylothorax associated with thrombosis of the CrVC.
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