Renal dysfunction in cardiovascular diseases and its consequences

Area of Science:

• Nephrology
• Cardiology
• Internal Medicine

Background:

• Cardiovascular and renal diseases frequently coexist, forming a detrimental cycle.
• While renal disease's impact on cardiovascular health is known, the reverse—cardiovascular disease inducing renal dysfunction—is often underestimated.
• Venous congestion, including renal venous hypertension, plays a critical role in heart failure-related kidney dysfunction.

Purpose of the Study:

• To quantify the prevalence of kidney abnormalities in cardiovascular diseases, particularly heart failure.
• To elucidate the pathophysiological mechanisms linking cardiovascular diseases to renal dysfunction, focusing on fluid overload and venous congestion.
• To outline therapeutic strategies for managing heart failure with coexisting renal dysfunction.

Main Methods:

• Literature review focusing on the interplay between cardiovascular and renal systems.
• Analysis of the prevalence and consequences of kidney abnormalities in heart failure.
• Examination of pathophysiological mechanisms, including fluid overload and venous congestion.

Main Results:

• Cardiovascular diseases are a major risk factor for kidney diseases, with significant prevalence of chronic and acute kidney abnormalities in heart failure.
• Fluid overload and venous congestion, specifically renal venous hypertension, are substantiated as primary drivers of renal dysfunction in heart failure.
• Transient mild worsening of renal function post-therapy does not typically indicate a poor prognosis.

Conclusions:

• The synergy between heart and kidney is crucial for hemodynamic stability.
• Understanding and addressing venous congestion and fluid overload is vital for managing renal dysfunction in heart failure.
• Balancing renal preservation and cardiac function improvement is key to optimizing outcomes in patients with cardiorenal disease.