Extracorporeal ultrasound exposure by the low-frequency acoustic amplitude-modulated signal on a ureteral stent for preventing its incrustation: experimental determination of optimal application points

Introduction. Incrustation and biofilms formation on the surface of ureteral stents are still the most significant complications of internal drainage of the upper urinary tract. There are much researchers conducted to combat these complications. The lack of a solution to this problem affects the ult...

Full description

Bibliographic Details
Main Authors: A. Yu. Tsukanov, D. S. Akhmetov, A. A. Novikov, N. A. Negrov, A. R. Putintseva, S. P. Semikina
Format: Article
Language:Russian
Published: Ministry of Health of Russian Federation, Rostov State Medical University, State Budget Educational Institute of Higher Professional Education 2021-10-01
Series:Вестник урологии
Subjects:
Online Access:https://www.urovest.ru/jour/article/view/475
_version_ 1826565483310088192
author A. Yu. Tsukanov
D. S. Akhmetov
A. A. Novikov
N. A. Negrov
A. R. Putintseva
S. P. Semikina
author_facet A. Yu. Tsukanov
D. S. Akhmetov
A. A. Novikov
N. A. Negrov
A. R. Putintseva
S. P. Semikina
author_sort A. Yu. Tsukanov
collection DOAJ
description Introduction. Incrustation and biofilms formation on the surface of ureteral stents are still the most significant complications of internal drainage of the upper urinary tract. There are much researchers conducted to combat these complications. The lack of a solution to this problem affects the ultimate results of treatment and economic losses. The issue of impact by physical methods on the ureteral stent, particularly the use of extracorporeal ultrasound acoustic exposure remains, promising and poorly covered.Purpose of the study. To determine the optimal application points of extracorporeal acoustic exposure by the low-frequency ultrasonic amplitude-modulated signal on a ureteral stent in an experiment.Materials and methods. The original device was designed. The main principle of its operation is the generation of an amplitude-modulated ultrasonic signal in two modes: pulsed and permanent. A sexually mature mongrel dog was an experimental animal. The ureteral stent was placed by laparotomy and cystotomy. Intraoperatively, the emitter of the developed device was applied to the skin of the animal, according to the previously indicated topographic and anatomical landmarks. At the same time, an ultrasonic wave noise analyzer was applied through the laparotomy wound to the appropriate level of the ureter. Measurements of ultrasound intensity indicators were performed three times in two operating modes of the device.Results. Pulsed mode: for the ureteral upper third, the highest ultrasonic intensity (123.67 dB) was achieved along the posterior axillary line. For the ureteral middle third, the best ultrasound intensity (115 dB) was obtained by the posterior axillary line. For the ureteral lower third, the highest ultrasound intensity (113.67 dB) was noted along the middle axillary line.Permanent mode: the best ultrasonic intensity in the projection of the ureteral upper, middle, and lower thirds was achieved along the posterior axillary line and was 118.67 dB, 117 dB and 116.67 dB, accordingly. However, there was an excessive heat effect, manifested by hyperemia and hyperthermia of the animal's skin, fascicular muscle contractions during the instrument functioned in the permanent mode, which can potentially lead to thermal burns and intolerance to the procedure.Conclusion. The pulsed mode of the device function is most safe. The optimal application points of the instrument emitter for the ureteral upper and middle thirds is the posterior axillary line, and for the ureteral lower third is the middle axillary line.
first_indexed 2024-03-07T14:23:23Z
format Article
id doaj.art-8c097b6a8b1e49e8b41ea42669c7c542
institution Directory Open Access Journal
issn 2308-6424
language Russian
last_indexed 2025-03-14T10:36:28Z
publishDate 2021-10-01
publisher Ministry of Health of Russian Federation, Rostov State Medical University, State Budget Educational Institute of Higher Professional Education
record_format Article
series Вестник урологии
spelling doaj.art-8c097b6a8b1e49e8b41ea42669c7c5422025-03-02T10:59:28ZrusMinistry of Health of Russian Federation, Rostov State Medical University, State Budget Educational Institute of Higher Professional EducationВестник урологии2308-64242021-10-0193707810.21886/2308-6424-2021-9-3-70-78331Extracorporeal ultrasound exposure by the low-frequency acoustic amplitude-modulated signal on a ureteral stent for preventing its incrustation: experimental determination of optimal application pointsA. Yu. Tsukanov0D. S. Akhmetov1A. A. Novikov2N. A. Negrov3A. R. Putintseva4S. P. Semikina5Omsk State Medical UniversityOmsk State Medical UniversityOmsk State Technical UniversityOmsk State Technical UniversityOmsk State Technical UniversityOmsk State Medical UniversityIntroduction. Incrustation and biofilms formation on the surface of ureteral stents are still the most significant complications of internal drainage of the upper urinary tract. There are much researchers conducted to combat these complications. The lack of a solution to this problem affects the ultimate results of treatment and economic losses. The issue of impact by physical methods on the ureteral stent, particularly the use of extracorporeal ultrasound acoustic exposure remains, promising and poorly covered.Purpose of the study. To determine the optimal application points of extracorporeal acoustic exposure by the low-frequency ultrasonic amplitude-modulated signal on a ureteral stent in an experiment.Materials and methods. The original device was designed. The main principle of its operation is the generation of an amplitude-modulated ultrasonic signal in two modes: pulsed and permanent. A sexually mature mongrel dog was an experimental animal. The ureteral stent was placed by laparotomy and cystotomy. Intraoperatively, the emitter of the developed device was applied to the skin of the animal, according to the previously indicated topographic and anatomical landmarks. At the same time, an ultrasonic wave noise analyzer was applied through the laparotomy wound to the appropriate level of the ureter. Measurements of ultrasound intensity indicators were performed three times in two operating modes of the device.Results. Pulsed mode: for the ureteral upper third, the highest ultrasonic intensity (123.67 dB) was achieved along the posterior axillary line. For the ureteral middle third, the best ultrasound intensity (115 dB) was obtained by the posterior axillary line. For the ureteral lower third, the highest ultrasound intensity (113.67 dB) was noted along the middle axillary line.Permanent mode: the best ultrasonic intensity in the projection of the ureteral upper, middle, and lower thirds was achieved along the posterior axillary line and was 118.67 dB, 117 dB and 116.67 dB, accordingly. However, there was an excessive heat effect, manifested by hyperemia and hyperthermia of the animal's skin, fascicular muscle contractions during the instrument functioned in the permanent mode, which can potentially lead to thermal burns and intolerance to the procedure.Conclusion. The pulsed mode of the device function is most safe. The optimal application points of the instrument emitter for the ureteral upper and middle thirds is the posterior axillary line, and for the ureteral lower third is the middle axillary line.https://www.urovest.ru/jour/article/view/475ureteral stentincrustationbiofilmultrasound
spellingShingle A. Yu. Tsukanov
D. S. Akhmetov
A. A. Novikov
N. A. Negrov
A. R. Putintseva
S. P. Semikina
Extracorporeal ultrasound exposure by the low-frequency acoustic amplitude-modulated signal on a ureteral stent for preventing its incrustation: experimental determination of optimal application points
Вестник урологии
ureteral stent
incrustation
biofilm
ultrasound
title Extracorporeal ultrasound exposure by the low-frequency acoustic amplitude-modulated signal on a ureteral stent for preventing its incrustation: experimental determination of optimal application points
title_full Extracorporeal ultrasound exposure by the low-frequency acoustic amplitude-modulated signal on a ureteral stent for preventing its incrustation: experimental determination of optimal application points
title_fullStr Extracorporeal ultrasound exposure by the low-frequency acoustic amplitude-modulated signal on a ureteral stent for preventing its incrustation: experimental determination of optimal application points
title_full_unstemmed Extracorporeal ultrasound exposure by the low-frequency acoustic amplitude-modulated signal on a ureteral stent for preventing its incrustation: experimental determination of optimal application points
title_short Extracorporeal ultrasound exposure by the low-frequency acoustic amplitude-modulated signal on a ureteral stent for preventing its incrustation: experimental determination of optimal application points
title_sort extracorporeal ultrasound exposure by the low frequency acoustic amplitude modulated signal on a ureteral stent for preventing its incrustation experimental determination of optimal application points
topic ureteral stent
incrustation
biofilm
ultrasound
url https://www.urovest.ru/jour/article/view/475
work_keys_str_mv AT ayutsukanov extracorporealultrasoundexposurebythelowfrequencyacousticamplitudemodulatedsignalonaureteralstentforpreventingitsincrustationexperimentaldeterminationofoptimalapplicationpoints
AT dsakhmetov extracorporealultrasoundexposurebythelowfrequencyacousticamplitudemodulatedsignalonaureteralstentforpreventingitsincrustationexperimentaldeterminationofoptimalapplicationpoints
AT aanovikov extracorporealultrasoundexposurebythelowfrequencyacousticamplitudemodulatedsignalonaureteralstentforpreventingitsincrustationexperimentaldeterminationofoptimalapplicationpoints
AT nanegrov extracorporealultrasoundexposurebythelowfrequencyacousticamplitudemodulatedsignalonaureteralstentforpreventingitsincrustationexperimentaldeterminationofoptimalapplicationpoints
AT arputintseva extracorporealultrasoundexposurebythelowfrequencyacousticamplitudemodulatedsignalonaureteralstentforpreventingitsincrustationexperimentaldeterminationofoptimalapplicationpoints
AT spsemikina extracorporealultrasoundexposurebythelowfrequencyacousticamplitudemodulatedsignalonaureteralstentforpreventingitsincrustationexperimentaldeterminationofoptimalapplicationpoints