Figure 6.

The medial aspect of the hindleg of a horse some 15 min after racing. Note the intricate pattern of small vessels and the large dilated saphenous vein minutes after racing [31]. For the track veterinarian, a knowledge of the physiology of the recovery period is of crucial importance because this is the time when horses are at greatest risk of EHI, and it is sometimes difficult to discern between physiological changes resulting from a very arduous run and those due to emergent EHI. Source—J Equine Vet Ed, 2021.