1羅東博愛醫院, 外科部, 泌尿外科
2國立陽明大學, 醫學院, 泌尿學科
Stone component analysis of 1000 patients in yi-lan county
Shyh-Chyi Chang1,2、Hueih-Shing Hsu1,2、Hsu-Hsiang Wang1、Heng-Chang Chuang1、I-Hung Shao1
1 Division of Urology, Department of Surgery,
Lotung Poh-Ai Hospital, Yi-Lan County, Taiwan.
2 Department of Urology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
The knowledge of urinary stone component plays an important role in understanding pathophysiology, choice of treatment modality, and prevention of recurrences of urolithiasis, Stone component revealed by stone analysis study provides the information. We analyze the stone analysis reports of 1000 patients in Yi-Lan county.
Materials and Methods:
1000 patients visited our hospital from Jan 2009 to Apr 2012 for urolithiasis treatment were included. Stone fragment collected after extracoporal shock wave lithotripsy (ESWL), ureteroscopic lithotripsy (URSL), percutaneous nephrolithotripsy (PCNL), vesicolithotripsy, or other treatment procedure was sent for stone analysis study (Fourier Transform Infrared Spectrophotometer, FTIR). Retrospective analysis of patient gender, age, and the stone analysis data were evaluated.
The average age of the 1000 patients is 53.1 year-old with 692 male patients. Pure single stone component (100%) of calcium oxalate, calcium phosphate and uric acid were noted in 4.2%, 5.8%, and 7.0% patients with the male to female ratio as 83.33%, 48.28% and 84.29%. The dominant stone component (>70%) of calcium oxalate, calcium phosphate and uric acid were noted in 49.9%, 20.6%, and 7.6% patients. In 100 patients with uric acid component, 70 patients belong to pure stone component (100% uric acid). Protein calculi component was noted in 8 patients. 2 of the patients have pure protein calculi. Cystine stone were noted in 1 patients with 100% cystine component.
In Yi-Lan county, most common stone component is calcium oxalate. Near half patients have calcium oxalate component more than 70%. Compare to calcium oxalate and uric acid stone, calcium phosphate stone were more common in female. Uric acid stone formed with high purity. Further patient education in diet control and urinary tract infection prevention seems to be important in prevent urolithiasis recurrence.