Acute Cardiorenal Syndrome in Heart Failure: from Dogmas to Advances

Area of Science:

• Cardiology
• Nephrology
• Critical Care Medicine

Background:

• Acute cardiorenal syndrome (CRS) is a significant cause of morbidity and mortality in acute heart failure.
• Understanding the pathophysiology of acute CRS, particularly renal salt and water handling, is crucial for effective management.

Purpose of the Study:

• To summarize current understanding and management strategies for acute cardiorenal syndrome (CRS).
• To highlight recent advancements and potential new treatment approaches for acute CRS.

Main Methods:

• Review of current literature on acute cardiorenal syndrome (CRS).
• Analysis of emerging strategies for managing diuretic resistance and renal dysfunction in acute heart failure.

Main Results:

• The definition of acute CRS is debated, with a focus beyond glomerular filtration impairment.
• Protocolized diuretic strategies, including loop and thiazide diuretics, acetazolamide, amiloride, or SGLT2 inhibitors, show promise for effective natriuresis.
• Novel approaches like modulating renal sodium avidity and device-based therapies warrant further investigation.

Conclusions:

• Acute CRS significantly impacts outcomes in acute heart failure.
• New insights into CRS pathophysiology may lead to improved therapeutic strategies.
• Effective management requires addressing diuretic resistance and optimizing renal function.