Feline comorbidities: cardiovascular and kidney diseases.

Balance fluid therapy carefully in cats with concurrent heart and kidney disease.

This article examines the complex relationship between cardiovascular and kidney diseases in cats, particularly in geriatric populations where comorbidity is common. The authors discuss bidirectional pathophysiological interactions between these systems that contribute to progressive functional decline. A central clinical challenge is managing fluid balance appropriately when both systems are affected, as therapeutic approaches often conflict: kidney disease management typically requires parenteral fluid therapy to maintain renal perfusion, while heart failure treatment necessitates diuretics to reduce pulmonary edema. The article emphasizes that clinicians must recognize these competing management goals and adjust treatment strategies accordingly to avoid iatrogenic injury to either organ system. Recommendations are synthesized from peer-reviewed literature and expert consensus guidelines, providing practical guidance for general veterinary practitioners managing feline patients with concurrent or sequential development of cardiac and renal pathology.

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