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Factors affecting blood loss during percutaneous nephrolithotomy: prospective study
Rajesh Kukreja1, Mihir Desai, Snehal Patel
1Department of Urology, Muljibhai Patel Urological Hospital Nadiad, Gujarat, India.
Journal of Endourology
|January 22, 2005
Summary
Percutaneous nephrolithotomy (PCNL) blood loss is influenced by operative complications, tract number, and operative time. Strategies like ultrasound guidance and staged procedures can minimize bleeding during PCNL.
Area of Science:
- Nephrology
- Urology
- Surgical Oncology
Background:
- Bleeding is a significant complication in percutaneous nephrolithotomy (PCNL).
- Multiple tracts increase bleeding risk during PCNL procedures.
- Identifying factors influencing blood loss is crucial for patient safety.
Purpose of the Study:
- To prospectively identify patient-related and intraoperative factors associated with blood loss during PCNL.
- To determine predictors of blood transfusion requirements in PCNL patients.
Main Methods:
- Prospective data collection from 301 PCNL procedures in 236 patients.
- Blood loss estimation via postoperative hemoglobin drop and transfusion volume.
- Stepwise multivariate regression analysis to identify significant predictors of blood loss and transfusion.
Main Results:
- Operative complications, mature nephrostomy tracts, operative time, access guidance method, tract dilatation method, multiple tracts, tract size, renal parenchymal thickness, and diabetes were significant predictors of blood loss.
- The overall blood transfusion rate was 7.9%.
- Preoperative hemoglobin, multiple tracts, and stone size predicted transfusion requirements.
Conclusions:
- Diabetes, multiple tracts, prolonged operative time, and complications increase PCNL blood loss.
- Ultrasound guidance, specific tract dilatation methods, and staged procedures can reduce blood loss.
- Minimizing tract size and considering secondary tracts are important in specific cases to reduce bleeding.