Page 1028 - Equine Clinical Medicine, Surgery and Reproduction, 2nd Edition

Cardiovascular system 1003

VetBooks.ir 8.32 8.33

Figs 8.32, 8.33 Ultrasonograms of a thrombopheblitis of the jugular vein after catheter placement in a colic
surgery case. Transverse (8.32) and longitudinal (8.33) views of the vein clearly showing intravascular thrombus
occluding much of the vein. (Photo courtesy Graham Munroe)

suspected. Mild cases may resolve spontaneously, but FURTHER READING
more severe cases may result in permanent occlusion Fregin GF (1992) Medical evaluation of the cardiovascular
of the vein or abscessation. Collateral circulation system. Vet Clin North Am Equine Pract 8(2):329–346.
results in time in resolution of the oedema. In rare Marr CM, Bowen M (2011) Cardiology of the Horse.
cases, surgical resection of the affected vein or mar- Saunders Elsevier, St. Louis.
supialisation of an abscessed vein may be necessary. McGurrin MKJ, Physick-Sheard PW, Kenney DG (2005)
How to perform transvenous electrical cardioversion
Prognosis in horses with atrial fibrillation. J Vet Cardiol 7(1):
The prognosis is very good. Most cases resolve 109–119.
with conservative therapy. Development of a collat- Mogg TD (1999) Equine cardiac disease. Clinical
pharmacology and therapeutics. Vet Clin North Am
eral circulation means that complete occlusion of a Equine Pract 15(3):523–534.
jugular vein does not necessarily result in long-term Paterson MW (1996) Equine Cardiology. Blackwell Science,
side-effects. Bilateral involvement is more likely to Cambridge, USA.
affect performance. Venous abscessation may be Reef VB, Bonagura J, Buhl R et al. (2014)
difficult to treat, requiring prolonged and some- Recommendations for management of equine athletes
times aggressive care. Dissemination or extension with cardiovascular abnormalities. J Vet Intern Med
of infection is uncommon. 28(3):749–761.