Related Experiment Video
Updated: Jun 26, 2025
A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
Published on: September 13, 2022
STONE Score: A Predictor for Need of Blood Transfusion in Percutaneous Nephrolithotomy
Aniqa Saeed1,2, Wajahat Aziz1,2, Alizah Pervaiz Hashmi
1Department of Urology, The Aga Khan University Hospital, Karachi, Pakistan.
Insights
High body mass index (BMI) and STONE score predict blood transfusions after percutaneous nephrolithotomy (PNCL). Obese patients may require blood product arrangements.
Area of Science:
- Urology
- Surgical Outcomes
- Nephrolithotomy
Background:
- Percutaneous nephrolithotomy (PNCL) is a common procedure for kidney stones.
- Predicting blood transfusion needs post-PNCL is crucial for patient management.
- The STONE score and patient comorbidities are potential predictors.
Purpose of the Study:
- To evaluate the STONE score's predictive value for blood transfusion post-PNCL.
- To identify patient-related factors, including obesity and comorbidities, that predict transfusion needs.
Main Methods:
- A cross-sectional descriptive study was conducted with 89 patients undergoing PNCL.
- STONE score and body mass index (BMI) were assessed.
- Chi-square, Fisher's exact, and logistic regression analyses were used.
Main Results:
- The mean STONE score was 7.87, with an 8.9% transfusion rate.
- Higher BMI (>25kg/m2) and STONE score were initially significant predictors (p<0.05).
- Multivariate analysis identified only BMI as a significant factor for transfusion.
Conclusions:
- Elevated BMI is a significant predictor of blood transfusion requirements post-PNCL.
- The findings suggest focusing blood product preparations on obese patients undergoing PNCL.
Objective:
To determine if the STONE score is a predictor of blood transfusion and if patient-related factors, i.e., the presence of comorbidities such as urinary tract infection and obesity, can predict blood transfusion post-percutaneous nephrolithotomy.
Study Design:
A cross-sectional descriptive study. Place and Duration of the Study: Department of Urology, The Aga Khan University Hospital, Karachi, Pakistan, between March 2022 and 2023.
Methodology:
All patients admitted for percutaneous nephrolithotomy (PNCL) were included in the study. STONE score and patient related factors were assessed. Chi-square or Fisher's exact test was applied to check the association between the dependent variables (blood transfusion) and the independent variables. Logistic regression analysis was applied to compare the variables responsible for the outcome. Results: During the study period, 150 patients underwent PCNL. After exclusion, 89 patients were included in the study. The mean STONE score was 7.87, and the total number of transfusions was 8 (8.9%). BMI (body mass index) >25kg/m2 and STONE score were found to be significant factors predicting the need for transfusion with p-values of 0.02 and 0.03, respectively. On multivariate analysis, only BMI was found to be a significant contributing factor for blood transfusion.
Conclusion:
High BMI and STONE score are significant predictive factors for blood transfusion post-PCNL. Blood product arrangements should be restricted to obese patients.
Key Words:
STONE score, Body mass index, Blood transfusion.
More Related Videos
07:25Predicting Amputation using Local Circulating Mononuclear Progenitor Cells in Angioplasty-treated Patients with Critical Limb Ischemia
Published on: September 22, 2020
06:38Early Detection of Drug-Induced Renal Hemodynamic Dysfunction Using Sonographic Technology in Rats
Published on: March 11, 2016
