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Original Research

Association of body mass index with the outcomes of retrograde intrarenal surgery


1  Bozok University, Faculty Of Medicine, Department Of Urology, Yozgat, Turkey
2 Medeniyet University, Göztepe Training And Research Hospital, Faculty Of Medicine, Department Of Urology, Istanbul, Turkey
3 Avcılar State Hospital, Department Of Urology, Istanbul, Turkey
4 Kütahya Dumlupinar University, Faculty Of Medicine, Department Of Urology, Kutahya, Turkey
5 Dışkapı Yıldırım Beyazıt Training And Research Hospital, Department Of Urology,  Ankara, Turkey


DOI : 10.33719/yud.2021;16-2-806918
New J Urol. 2021;16(2): 124-130

ABSTRACT

Objective: Overweight and obesity increased worldwide over four decades. In 2016, nearly 11% of men and 15% of women over 18 years old were obese. Obesity is accepted as a risk factor for renal stones. The relationship between obesity and uro-lithiasis is complicated. Various complications can occur during perioperative or postoperative fol-low-up in obese patients. Minimal invasive nature and high efficacy of Retrograde Intrarenal Surgery (RIRS) present itself as a safe and less morbid treat-ment option. In this study, we aimed to compare the efficacy and safety of RIRS in the treatment of kidney stones in different BMI levels.

Material and Methods: Files of 552 patients who underwent RIRS for renal stones between Jan-uary 2012 and December 2017 were reviewed. We classified patients according to the World Health Organisation classification. These three groups were compared for stone-free rate, complication rate, operative and fluoroscopy times and length of hospital stay.

Results: The stone-free rate (SFR) of the study population was 80.8%. It was 81% for Group 1, 83.7% for Group 2 and 77.7% for Group 3. There was no statistically significant difference between the three groups among SFR (p=0.346). Clinical insignificant residual fragments (CIRF) status was also similar among the three groups (p=0.254). Complication rates between the three groups were statistically similar (p=0.416).

Conclusion: In this study, we have shown that RIRS is a suitable option for all urolithiasis patients, even for obese individuals. Stone-free rates, length of hospital stay, operation time and complication rates in obese patients are similar with non-obese patients.

Keywords: urolithiasis; obesity; laser lithotripsy


ABSTRACT

Objective: Overweight and obesity increased worldwide over four decades. In 2016, nearly 11% of men and 15% of women over 18 years old were obese. Obesity is accepted as a risk factor for renal stones. The relationship between obesity and uro-lithiasis is complicated. Various complications can occur during perioperative or postoperative fol-low-up in obese patients. Minimal invasive nature and high efficacy of Retrograde Intrarenal Surgery (RIRS) present itself as a safe and less morbid treat-ment option. In this study, we aimed to compare the efficacy and safety of RIRS in the treatment of kidney stones in different BMI levels.

Material and Methods: Files of 552 patients who underwent RIRS for renal stones between Jan-uary 2012 and December 2017 were reviewed. We classified patients according to the World Health Organisation classification. These three groups were compared for stone-free rate, complication rate, operative and fluoroscopy times and length of hospital stay.

Results: The stone-free rate (SFR) of the study population was 80.8%. It was 81% for Group 1, 83.7% for Group 2 and 77.7% for Group 3. There was no statistically significant difference between the three groups among SFR (p=0.346). Clinical insignificant residual fragments (CIRF) status was also similar among the three groups (p=0.254). Complication rates between the three groups were statistically similar (p=0.416).

Conclusion: In this study, we have shown that RIRS is a suitable option for all urolithiasis patients, even for obese individuals. Stone-free rates, length of hospital stay, operation time and complication rates in obese patients are similar with non-obese patients.

Keywords: urolithiasis; obesity; laser lithotripsy

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