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The Correlation Between STONE Nephrolithometry Score and Hemoglobin Drop in Patients Undergoing Percutaneous
Mohammad Shoaib1, Muhibullah Bangash1, Basit Salam2
1Surgery, Aga Khan University Hospital, Karachi, PAK.
Cureus
|December 17, 2020
Summary
The STONE score, which assesses kidney stone complexity, correlates with postoperative hemoglobin drop and complications after percutaneous nephrolithotomy (PCNL). Higher STONE scores indicate a greater likelihood of significant hemoglobin drop and increased complications.
Area of Science:
- Urology
- Nephrology
- Surgical Outcomes
Background:
- Percutaneous nephrolithotomy (PCNL) is a common procedure for kidney stone removal.
- Predicting postoperative outcomes, such as hemoglobin drop and complications, is crucial for patient management.
- The STONE score is a tool to assess kidney stone complexity.
Purpose of the Study:
- To determine the correlation between the STONE score and postoperative hemoglobin drop in PCNL patients.
- To evaluate the relationship between the STONE score and stone-free rates and complications.
Main Methods:
- Prospective observational study of 142 adult patients undergoing PCNL.
- Calculation of the five variables of the STONE score (stone size, topography, obstruction, number, Hounsfield units) pre-procedure.
- Assessment of postoperative hemoglobin drop, stone-free rates, and complications using the modified Clavien system.
Main Results:
- A significant correlation was found between hemoglobin drop and the STONE score, stone size, and preoperative creatinine clearance.
- Patients with a hemoglobin drop >1 g/dL had higher STONE scores and mean stone sizes.
- Overall complication rates were significantly higher in patients with a hemoglobin drop >1 g/dL (10.5%) compared to <1 g/dL (2.8%).
Conclusions:
- Stone complexity, as measured by the STONE score, is a significant predictor of post-PCNL hemoglobin drop.
- The STONE score correlates with stone clearance rates and the likelihood of postoperative complications.
- The STONE score can aid in preoperative counseling and predicting transfusion needs.
Keywords:
hemoglobin (hemoglobin) droppercutaneous nephrolithotomy (pcnl)stone nephrolithometry scoreMore Related Videos
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