Type II renal tubular acidosis in a mare.

The study revolves around the diagnosis and management of a rare condition called Type II Renal Tubular Acidosis (RTA) encountered in a young mare post-surgery.

Understanding the Research Subject

• A 4-year-old mare that had undergone a surgery for colic was found to have severe metabolic acidosis that continued even during the post-operative period.
• Based on clinical and laboratory examinations, a disorder in the renal tubules of the horse was diagnosed.

Link to Renal Tubular Acidosis

• Upon diagnosis, it was revealed that the mare was suffering from ‘renal tubular acidosis’ (RTA), a condition that is quite rare in horses, and impacts the ability of the kidneys to excrete acids into the urine.
• In simple terms, this disorder disallows the kidneys from maintaining the pH balance of the body fluids, causing a decrease in blood pH, leading to metabolic acidosis.

Type of Renal Tubular Acidosis

• The research emphasized that in a previous report discussing RTA in horses, type I RTA was diagnosed in two horses. However, Type II RTA was identified in the mare, marking this as a unique case.
• Type II RTA, also known as proximal RTA, is a condition where the damage occurs in the first part of the renal tubules, preventing the efficient absorption of bicarbonate from the urine, thereby leading to bicarbonate wastage and subsequent acidosis.
• Bicarbonate titration studies were performed which played a critical role in documenting and confirming the Type II RTA in the mare.

Concluding Remarks

• The research highlights an unusual veterinary case that involved the diagnosis and management of Type II RTA in a young mare.
• Furthermore, the study emphasizes the significance of thorough clinical examinations and laboratory investigations, including bicarbonate titration studies, in diagnosing complex, rare conditions like RTA in horses.