Renal Venous Hypertension and Kidney Dysfunction: Implications for Clinical Practice.

Area of Science:

• Nephrology
• Vascular Medicine
• Radiology

Background:

• Renal venous hypertension (RVH) arises from conditions increasing intra-abdominal pressure, such as advanced cirrhosis or heart failure.
• Impaired renal venous outflow elevates kidney pressures, reducing glomerular filtration and tubular function, potentially causing acute kidney injury or CKD progression.
• Nutcracker syndrome is one example of a condition leading to RVH, presenting with symptoms like hematuria and flank pain.

Purpose of the Study:

• To review the epidemiology, pathophysiology, and diagnostic strategies for renal venous hypertension.
• To highlight the clinical relevance of RVH in cardiology, nephrology, and critical care.
• To provide an overview of diagnostic imaging options for RVH.

Main Methods:

• Review of existing literature on renal venous hypertension.
• Summary of pathophysiologic mechanisms leading to RVH.
• Categorization of diagnostic approaches, including invasive and noninvasive imaging.

Main Results:

• RVH is a significant cause of renal dysfunction in systemic congestion.
• Diagnostic tools include renal venography, intravascular ultrasound, Doppler ultrasound, CT angiography, and MRI.
• RVH presence is associated with poorer patient outcomes and management complications.

Conclusions:

• Understanding RVH is crucial for managing patients with systemic congestion and renal dysfunction.
• Accurate diagnosis through imaging is key to preventing complications.
• RVH impacts multiple medical specialties, necessitating a multidisciplinary approach.