What complication are horses in dorsal recumbency more likely to experience?

Horses in dorsal recumbency are particularly susceptible to hypoventilation due to the anatomical and physiological changes that occur when they are positioned on their backs. In this position, the weight of the body can compress the diaphragm and restrict the movement of the lungs, leading to shallower breaths and decreased ventilation efficiency. Additionally, the position can hinder normal respiratory mechanics, further increasing the risk of hypoventilation.

The right choice focuses on the immediate effects of positioning during anesthesia. While other complications, such as hyperthermia or cardiac arrhythmia, can occur in various contexts, hypoventilation stands out as a direct consequence of the dorsal position in horses, especially during anesthesia. Understanding this risk highlights the importance of careful monitoring and management of horses in dorsal recumbency to avoid respiratory complications.