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Table 4 Characterization for stents encrustation Bladder (N = 99) and Renal (N = 99) ends

From: Reduction of ureteral stent encrustation by modulating the urine pH and inhibiting the crystal film with a new oral composition: a multicenter, placebo controlled, double blind, randomized clinical trial

Percentage (%) of encrustation in stents

 

Bladder end

Renal end

0

1

2

3

0

1

2

3

no deposit

28.3

   

41.4

   

OM

12.1

   

8.1

   

COM

 

24.2

   

27.3

  

COM + COD

 

14.1

   

11.1

  

BRU

 

2.0

 

1.0

 

2.0

  

HAP

 

1.0

1.1

  

1.0

  

HAP + BRU

 

1.0

 

3.0

   

3.0

UA

  

3.0

   

2.0

 

UA + COM

 

1.0

   

1.0

  

bacteria

 

4.0

   

2.0

  

HAP + PAM

   

2.0

  

1.0

 

BRU + COD

 

1.0

  

AU

 

1.0

  

  1. OM organic matter; COM calcium oxalate monohydrate; COD calcium oxalate dihydrate; BRU brushite; HAP hydroxyapatite; UA uric acid; PAM ammonium magnesium phosphate; AU ammonium urate