Research on Optimal Diagnosis and Treatment of Cardiorenal Syndrome

This study is researching the best ways to diagnose and treat cardiorenal syndrome — a condition where the heart and kidneys affect each other's function, leading to both failing at the same time or one after the other. **You may be eligible if...** - You have been diagnosed with one of the five types of cardiorenal syndrome, including acute heart failure causing kidney injury, chronic heart disease causing chronic kidney disease, acute kidney injury affecting the heart, or chronic kidney disease affecting the heart **You may NOT be eligible if...** - You do not meet the diagnostic criteria for cardiorenal syndrome - You are unable or unwilling to provide informed consent Talk to your doctor to see if this trial is right for you.