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Predictors for kidney stones recurrence following extracorporeal shock wave lithotripsy (ESWL) or percutaneous nephrolithotomy (PCNL).
J Med Assoc Thai. 2012 Mar; 95(3):342-8.JM

Abstract

BACKGROUND

Stone recurrence after extracorporeal shock wave lithotripsy (ESWL) or percutaneous nephrolithotomy (PCNL) are common. Predictors for kidney stones vary among populations and areas.

OBJECTIVE

To determine predictors for kidney stones recurrence after ESWL or PCNL.

MATERIAL AND METHOD

A retrospective cohort study was conducted at a university hospital. The study cohort was patients aged more than 18 years, diagnosed with kidney stones, who were treated with ESWL or PCNL between 2006 and 2009. Medical files were reviewed for clinical profiles, stone characteristics, composition, type of treatment, presence of stone after treatment, stone reappearance, and related laboratory data. Predictors were determined by a multivariable poisson regression and presented as incidence rate ratios (IRRs) with 95% confidence interval.

RESULTS

From a cohort of 252 patients, 240 who had at least one follow-up and with complete plain kidney ureters and bladder (KUB) film or intravenous pyelogram (IVP) were included in analysis. At three years, the total incidence rate of recurrence was 46 per 1,000 person-months. After a multivariable poisson regression clustering by type of stone composition, independent predictors for stone recurrence were age < or = 50 years (adjusted IRR = 1.3, 95% CI = 1.2-1.4, p < 0.001), ESWL treatment (adjusted IRR = 2.1, 95% CI = 2.1-2.2, p < 0.001), stones located in lower calyx as compared to renal pelvis (adjusted IRR = 8.7, 95% CI = 2.9-25.9, p = 0.001), multiple stones (adjusted IRR = 5.9, 95% CI = 4.8-7.5, p < 0.001), and stone size larger than 20 mm (adjusted IRR = 1.4, 95% CI = 1.2-1.6, p < 0.001).

CONCLUSION

After stone removals, patients with these predictors should closely be followed up for regular clinical evaluations.

Authors+Show Affiliations

Clinical Epidemiology & Medical Statistics Unit, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand. wchongru@gmail.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22550832

Citation

Chongruksut, Wilaiwan, et al. "Predictors for Kidney Stones Recurrence Following Extracorporeal Shock Wave Lithotripsy (ESWL) or Percutaneous Nephrolithotomy (PCNL)." Journal of the Medical Association of Thailand = Chotmaihet Thangphaet, vol. 95, no. 3, 2012, pp. 342-8.
Chongruksut W, Lojanapiwat B, Tawichasri C, et al. Predictors for kidney stones recurrence following extracorporeal shock wave lithotripsy (ESWL) or percutaneous nephrolithotomy (PCNL). J Med Assoc Thai. 2012;95(3):342-8.
Chongruksut, W., Lojanapiwat, B., Tawichasri, C., Paichitvichean, S., Euathrongchit, J., Ayudhya, V. C., & Patumanond, J. (2012). Predictors for kidney stones recurrence following extracorporeal shock wave lithotripsy (ESWL) or percutaneous nephrolithotomy (PCNL). Journal of the Medical Association of Thailand = Chotmaihet Thangphaet, 95(3), 342-8.
Chongruksut W, et al. Predictors for Kidney Stones Recurrence Following Extracorporeal Shock Wave Lithotripsy (ESWL) or Percutaneous Nephrolithotomy (PCNL). J Med Assoc Thai. 2012;95(3):342-8. PubMed PMID: 22550832.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Predictors for kidney stones recurrence following extracorporeal shock wave lithotripsy (ESWL) or percutaneous nephrolithotomy (PCNL). AU - Chongruksut,Wilaiwan, AU - Lojanapiwat,Bannakij, AU - Tawichasri,Chamaiporn, AU - Paichitvichean,Somboon, AU - Euathrongchit,Jantima, AU - Ayudhya,Vorvat Choomsai Na, AU - Patumanond,Jayanton, PY - 2012/5/4/entrez PY - 2012/5/4/pubmed PY - 2012/5/30/medline SP - 342 EP - 8 JF - Journal of the Medical Association of Thailand = Chotmaihet thangphaet JO - J Med Assoc Thai VL - 95 IS - 3 N2 - BACKGROUND: Stone recurrence after extracorporeal shock wave lithotripsy (ESWL) or percutaneous nephrolithotomy (PCNL) are common. Predictors for kidney stones vary among populations and areas. OBJECTIVE: To determine predictors for kidney stones recurrence after ESWL or PCNL. MATERIAL AND METHOD: A retrospective cohort study was conducted at a university hospital. The study cohort was patients aged more than 18 years, diagnosed with kidney stones, who were treated with ESWL or PCNL between 2006 and 2009. Medical files were reviewed for clinical profiles, stone characteristics, composition, type of treatment, presence of stone after treatment, stone reappearance, and related laboratory data. Predictors were determined by a multivariable poisson regression and presented as incidence rate ratios (IRRs) with 95% confidence interval. RESULTS: From a cohort of 252 patients, 240 who had at least one follow-up and with complete plain kidney ureters and bladder (KUB) film or intravenous pyelogram (IVP) were included in analysis. At three years, the total incidence rate of recurrence was 46 per 1,000 person-months. After a multivariable poisson regression clustering by type of stone composition, independent predictors for stone recurrence were age < or = 50 years (adjusted IRR = 1.3, 95% CI = 1.2-1.4, p < 0.001), ESWL treatment (adjusted IRR = 2.1, 95% CI = 2.1-2.2, p < 0.001), stones located in lower calyx as compared to renal pelvis (adjusted IRR = 8.7, 95% CI = 2.9-25.9, p = 0.001), multiple stones (adjusted IRR = 5.9, 95% CI = 4.8-7.5, p < 0.001), and stone size larger than 20 mm (adjusted IRR = 1.4, 95% CI = 1.2-1.6, p < 0.001). CONCLUSION: After stone removals, patients with these predictors should closely be followed up for regular clinical evaluations. SN - 0125-2208 UR - https://www.unboundmedicine.com/medline/citation/22550832/Predictors_for_kidney_stones_recurrence_following_extracorporeal_shock_wave_lithotripsy__ESWL__or_percutaneous_nephrolithotomy__PCNL__ DB - PRIME DP - Unbound Medicine ER -