Electrolyte imbalances in dogs with chronic inflammatory enteropathies

Area of Science:

• Veterinary Medicine
• Gastroenterology
• Comparative Medicine

Background:

• Human inflammatory bowel diseases (IBD) are linked to electrolyte disturbances and diarrhea.
• Canine chronic inflammatory enteropathies (CIE) involve diffuse gastrointestinal inflammation, but electrolyte imbalance prevalence is unstudied.

Purpose of the Study:

• To determine the prevalence of serum electrolyte abnormalities in dogs with CIE.
• To compare electrolyte profiles between food-responsive and immunosuppressant-responsive CIE cases.

Main Methods:

• Retrospective evaluation of serum electrolyte concentrations (Na+, Cl-, corrected Cl-, K+) in 37 dogs diagnosed with CIE.
• Analysis of electrolyte levels in relation to CIE treatment responsiveness and clinical signs like diarrhea.

Main Results:

• Hypokalemia (low potassium) was the most frequent abnormality (19%), with no difference between treatment groups.
• Hyponatremia (low sodium) occurred in 14% of cases, primarily in immunosuppressant-responsive cases, and correlated with diarrhea severity and duodenal lesions.
• Hypo- (5%) and hyperchloridemia (11%) were also observed.

Conclusions:

• Electrolyte imbalances are common in canine CIE, occurring with similar frequency to human IBD.
• Potential mechanisms include increased potassium secretion or altered sodium/chloride absorption in canine CIE.
• Further research is needed to elucidate the mechanisms of CIE-associated diarrhea.