Diagnosis and treatment of fourth branchial arch defects (Equine)

[Guillermo Rodriguez]

Diagnosis and treatment of fourth branchial arch defects

Equine Veterinary Education 2013; In Press


Authors: S. Townsend
Pages: 2 Pages
Language: English
Format DF
Size: 878Kb

Summary
The case report from Menéndez et al. (2011) describesbilateral fourth branchial arch defects (4-BAD) to be present
in 2 full siblings and provides the first evidence of a direct
genetic and heritable component to 4-BAD. A further sibling
died of similar respiratory signs and, although no definite
diagnosis was reached, a similar anomaly may have been
present (Menéndez et al. 2011). The incidence of 4-BAD in
Thoroughbreds is reported at 0.2% (Lane 2001) but case reports
are sporadic (Wilson et al. 1986; Klein et al. 1989; Smith and
Mair 2009) and the largest case series describes 68 cases
(Lane 2001). Within this case series 16/68 were reported to be
bilateral, with unilateral cases affected the right side in 42/68
cases and the left in 10/68 cases (Lane 2001). Case reports
describe the condition to be present in a variety of breeds
including Thoroughbreds (Lane 2001), Warmbloods and a
Haflinger (Wilson et al. 1986; Klein et al. 1989) along with a
Welsh pony (Smith and Mair 2009).

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