Reversible Cardio‐Renal‐Cerebral Syndrome in a Dog: A Case Report

A 14‐year‐old miniature Pinscher was presented with azotemia, severe hyperkalemia, and oliguria caused by decompensation of chronic renal disease, along with bradycardia resulting from third‐degree atrioventricular (AV) block. Supportive medical treatment was instituted for the oliguria, azotemia, and hyperkalemia. Within 12 h of hospitalization, multifocal central neurologic signs developed, including nystagmus, quadriparesis, decreased mentation, and ventral neck flexion. A diagnosis of cardiorenal cerebral syndrome was made. A transvenous permanent pacemaker was placed to improve cardiac output. Within 24 h, clinical signs improved, and the patient was discharged from the hospital on day three.