The heart and kidneys work closely together. When the heart is weak, kidney blood flow can decline. When kidney function is reduced, the body may retain salt and fluid, which can worsen blood pressure, swelling, and heart failure symptoms.
This heart-kidney interaction is often called cardiorenal syndrome. Care requires careful balancing of fluid status, medications, blood pressure, electrolytes, and kidney function.
Symptoms patients may notice
- Leg, hand, or abdominal swelling
- Shortness of breath or difficulty lying flat
- Fatigue, weakness, sleepiness, insomnia, or reduced exercise tolerance
- Reduced urine output or rapid weight gain
- Abnormal kidney function or electrolytes on blood tests
How we evaluate this condition
- Heart failure and kidney disease history review
- Blood pressure, weight, fluid status, kidney function, and electrolyte monitoring
- EKG, echocardiogram, labs, rhythm monitoring, and medication review
- Coordination with nephrology when kidney disease is advanced or complex
Treatment and care options
- Medication adjustment to balance heart function, blood pressure, swelling, kidney function, and electrolytes
- Diuretic management and sodium/fluid guidance when appropriate
- Diabetes and blood pressure optimization
- Nephrology referral or dialysis coordination when needed
When to seek urgent care
Call 911 for severe shortness of breath, chest pain, confusion, fainting, or rapidly worsening swelling with breathing difficulty.