Clinical implications of the solitary functioning kidney

Area of Science:

• Pediatric Nephrology
• Congenital Anomalies of the Kidney and Urinary Tract (CAKUT)

Background:

• Congenital anomalies of the kidney and urinary tract (CAKUT) are a leading cause of end-stage renal disease (ESRD) in children.
• A solitary functioning kidney is a significant subgroup of CAKUT, with many patients progressing to chronic kidney disease (CKD).
• Distinguishing high-risk patients for disease progression remains a challenge.

Purpose of the Study:

• To review the causes, consequences, and clinical implications of solitary functioning kidney in children.
• To discuss the role of genetic and environmental factors in renal development and prognosis.
• To recommend guidelines for the follow-up of these patients.

Main Methods:

• Literature review focusing on pediatric CAKUT and solitary functioning kidney.
• Analysis of factors influencing renal prognosis, including glomerular hyperfiltration and associated anomalies.
• Synthesis of current knowledge on genetic and environmental influences.

Main Results:

• Glomerular hyperfiltration in a reduced nephron mass is a hypothesized mechanism for impaired renal prognosis.
• Associated ipsilateral CAKUT may significantly impact clinical outcomes.
• Prenatal ultrasound allows early identification, enabling timely risk assessment.

Conclusions:

• Early evaluation of risk factors for renal injury is vital for differentiating patients at risk for CKD.
• Understanding genetic and environmental factors is key for accurate diagnosis and prognosis.
• Established follow-up guidelines are recommended for solitary functioning kidney patients.