Evolution of Encrustations on Double J Stents-a Fourier Transform Spectroscopy Analysis

Suresh Bhat; Fredrick Paul; Ramaprasad M K; Suyog Shetty; Sabu Thomas

Volume : VII, Issue : XI, November - 2017

Evolution of Encrustations on Double J Stents-a Fourier Transform Spectroscopy Analysis

Suresh Bhat, Fredrick Paul, Ramaprasad M K, Suyog Shetty, Sabu Thomas

Abstract :

Stenting of the ureter is one of the most commonly performed urological procedures. Double J ureteric stents used for this purpose are associated with many morbidities like frequency, urgency, dysuria, hematuria, stent migration, stent fracture and stent encrustation. In this study we evaluated the temporal relationship of the evolution of stent encrustation. Ureteric stents that were indwelling for a period of 2weeks, 6weeks and 12weeks were studied using Fourier–transform infrared spectroscopy(FTIR). A fresh stent was used as a control. In our study it was noted that additional amide peaks occur as one of the first changes. Another notable change occurring in the stent is appearance of carboxylic acid peaks suggesting a deposition of proteins as early as 6 weeks which maybe the precursor for stent encrustation. Another notable change was the disappearance of peaks around 2349 cm –1 region denotes phosphines these Phosphines are organophosphorus compounds with P–H bonds. Hence there is a pressing need for a further studies into the deleterious effects of the dissipation of these stent materials into the patient.