Related Experiment Video
Updated: Jan 22, 2026

In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
Published on: March 30, 2015
Does Body Mass Index Impact the Outcomes of Ultrasound-Guided Percutaneous Nephrolithotomy?
Wei Jin1, Yan Song2, Xiang Fei1
1Division of Urology, Sheng Jing Hospital, China Medical University, Shenyang, China.
Background And Purpose:
To evaluate whether body mass index (BMI) has an impact on the outcomes of ultrasound-guided percutaneous nephrolithotomy (PCNL).
Materials And Methods:
The data of 359 patients who required PCNL at ShengJing hospital between June 2013 and July 2015 were reviewed, with the patients divided into 4 groups based on different ranges of BMI: <25, 25-29.9, 30-34.9, and ≥35 kg/m2. Baseline characteristics and outcomes were compared between the groups. Multivariable logistic regressions were used to evaluate the independent contribution of BMI as a predictor of outcomes. The Modified Clavien classification system was used for reporting complications. Results were compared between the groups using the chi-square and multivariate logistic regression tests.
Results:
No significant differences were noted in the demographic data between the 4 groups. Ultrasound screening time, total operative time, and hospital stay all increased with increasing BMI. No difference was found in the complication rate, stone free rate, or need for auxiliary procedures.
Conclusion:
Obesity does not increase the incidence of complications in ultrasound-guided PCNL, and the efficacy of the technique for obese patients is similar to that for normal weight patients. The lateral decubitus position was preferred in patients with higher BMI.
Related Concept Videos
Drug Control Governance: Regulatory Bodies and Their Impact
Reduced Mass Coordinates: Isolated Two-body Problem
Predicting Reaction Outcomes
Impact of Groups on Groups
Outcomes of Glycolysis
Cellular respiration can occur aerobically (with oxygen) or anaerobically (without oxygen). In the presence of oxygen, cellular respiration starts with glycolysis and continues with pyruvate...
Impact
When particles with different initial velocities collide, they induce deformation by applying equal and opposite impulses. At the point of maximum deformation, the particles move together with...

