High Abdominal Aortic Calcium Scores Are Associated With Renal Function Decline Following Radical Nephrectomy

Area of Science:

• Nephrology
• Cardiovascular Imaging
• Oncology

Background:

• Radical nephrectomy (RN) for renal malignancies can impact postoperative renal function.
• Assessing preoperative risk factors for renal dysfunction is crucial for patient management.

Purpose of the Study:

• To investigate the association between abdominal aortic calcium score (AACS) and renal function after radical nephrectomy (RN).
• To determine if AACS can predict chronic kidney disease (CKD) development post-RN.

Main Methods:

• Retrospective analysis of 114 patients undergoing RN.
• Abdominal aortic calcium score (AACS) quantified using Agatston system.
• Primary outcome: CKD development (eGFR <60 mL/min/1.73 m² at 12 months).
• Multivariable regression adjusted for age, hypertension, diabetes, and pre-operative eGFR.

Main Results:

• Patients developing CKD were older and had significantly higher median AACS.
• Higher AACS was independently associated with greater eGFR decline from baseline to 12 months.
• AACS was not independently associated with absolute 12-month eGFR.

Conclusions:

• Elevated AACS is linked to poorer postoperative renal outcomes following RN.
• AACS independently predicts greater decline in renal function post-surgery.
• Incorporating AACS into preoperative assessments may enhance risk stratification and patient counseling.