Navigation Links
'Smart stethoscope' advance in monitoring treatment of kidney stones
Date:12/12/2012

A new listening device, developed by scientists from the University of Southampton, is being used to monitor the effectiveness of the treatment of kidney stones - saving patients unnecessary repeat therapy and x-ray monitoring.

If kidney stones cannot be dissolved by drugs, the favoured procedure is lithotripsy. Lithotripsy works by focusing thousands of shock waves onto the kidney stones in an effort to break them into pieces small enough to urinate out of the body or be dissolved by drugs.

However, it is difficult to discover exactly when the treatment has succeeded in breaking the stone and patients frequently have to experience more shocks than necessary, or be sent home when an insufficient number of shocks have been delivered to break the stone.

The new 'Smart stethoscope' has been developed by a team from the University's Faculty of Engineering and the Environment in collaboration with Guy's and St Thomas' Foundation Trust (GSTT) and Precision Acoustics Ltd. The programme was led by Professor Tim Leighton from the University's Institute of Sound and Vibration Research (ISVR).

The 'Smart stethoscope' is placed on a patient's skin as they undergo shock wave treatment for kidney stones and assesses whether the treatment is working. It listens to the echoes, which reverberate around the body after each shock wave hits the stone. The device is now being used clinically at the London hospitals of GSTT.

Professor Leighton says: "It's an imperfect analogy, but consider a railwayman walking along the length of a train, hitting the metal wheels with a hammer, If the wheel rings nicely, he knows that it's not cracked. If the wheel is cracked, it gives a duller sound.

"We are looking for the stone to go from being intact at the start of treatment (when it will give a nice ring "tick" sound) to being fragmented at the end of the treatment (when it will give a duller "tock" sound)."

Professor Leighton's research, which includes the computational fluid dynamics (CFD) use to inform judgements underpinning the invention of the smart stethoscope, is published in the latest issue of the Royal Society journal Proceedings of the Royal Society A.

Dr Fiammetta Fedele of GSTT said: "Professor Leighton's CFD predictions of the acoustic signals emitted when bubbles collapse against kidney stones during SWL led (through collaboration with GSTT and Precision Acoustics Ltd.) to a 5,000 passive acoustic sensor. When placed on the patient's skin this sensor diagnoses successful SWL treatments (with 94.7 per cent accuracy in clinical trials, compared to the 36.8 per cent achieved by clinicians with the current state-of-the-art equipment suite). An accurate diagnostic is needed to conform with the 2004 'The NHS improvement Plan: putting people at the heart of public services' of reducing the 'patient pathway', because currently 30-50 per cent of SWL patients require re-treatment and an unknown are overdosed."

The NHS is trialling the smart stethoscope as part of major plans to reduce inaccurate diagnoses and ineffective treatments, and so far GSTT has used the sensor on over 200 patients.

In subsequent use of the device, GSTT have found it has the additional benefit that it can detect whether the treatment will work, before the stage when any possible adverse side effects from the treatment are likely to have occurred. This allows ready identification of those patients who should not receive this treatment, but whom should be referred to some other therapy to treat their kidney stones.

Professor Leighton says: "The research in the paper describes how we reached the decision stage to move from relatively inexpensive computer simulation to much more costly clinical trials in collaboration with NHS. This is a critical stage in R+D of this type if the move is taken too early, the expensive clinical trials do not have adequate underpinning science and engineering, resources are wasted, and the eventual patient benefit is delayed. But conversely if the decision to move is taken too late, then the positive benefits to patients can be delayed for years.

"The research in this paper also defines the parameters needed by our commercial partner (Precision Acoustics Ltd.) to build a robust clinical sensor from the laboratory version we had made. It has taken seven years of research and development to arrive at a clinical device from the initial fundamental research done in the early 1990's by Dr Coleman of GSTT and myself. It was hard work with a great team, and seeing the positive patient outcomes now makes it all worthwhile. "


'/>"/>

Contact: Glenn Harris
G.Harris@soton.ac.uk
44-023-805-93212
University of Southampton
Source:Eurekalert  

Related medicine news :

1. ‘A Subtle Addiction – Attacking the Y Generation’ - New Book by Peter & Lynn McIntosh Begs the Question "Is an Ipad, Kindle or Smart Phone a Safe Gift or a Potential Radiation Cancer Risk this Holiday Season?"
2. Home Healthplex Revolutionizes the way to Search for Home Health Agencies with an Application that is Available from your Smart Phone
3. Your Smartphone Might Help You Lose Weight
4. College Kids Not So Smart About Flu Shots, Study Finds
5. Quorn Foods Inc. Releases a Statement Regarding the Best Free Vegetarian Smartphone Apps for the Food Lovers Diet
6. Children who swim start smarter
7. Smart scaffolding aims to rebuild tissue from the inside
8. Smartphone app helps mentally ill persons
9. Smart drug improves survival in older patients with acute myeloid leukemia
10. Penn Medicine contest maps 1,400 lifesaving AEDs via crowdsourcing contest fueled by smart phones
11. Smartphones Linked to Sexual Activity in Teens: Study
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Smart stethoscope' advance in monitoring treatment of kidney stones
(Date:1/24/2017)... ... January 24, 2017 , ... West’s Health Advocate Solutions, ... Series of webinars will start January 31 with a session about understanding healthcare ... health and benefits topics, including employee engagement, pricing transparency, population health and wellness, ...
(Date:1/24/2017)... Santa Margarita, CA (PRWEB) , ... January 24, 2017 , ... ... advancement platform for 21st century leadership, has named Hector M. Chavez, Manager, Employee & ... and diabetes treatment center - as its Hispanic Leader of the Month. City of ...
(Date:1/24/2017)... , ... January 24, 2017 , ... ... Need to Thrive , Well-meaning studies such as the Fordham Institute’s High ... better serve top students, such as including gifted or high-achieving students as a ...
(Date:1/24/2017)... , ... January 24, 2017 , ... American Family Care ... expanding access to high-quality health care for residents in the area. The Bedford clinic ... opened during the past four years by Dave Adams and Dr. Kristina Orio. Adams ...
(Date:1/24/2017)... ... ... “Speaking With God’s Voice”: a resolute and spirited call for anointed preaching ... A. Miraglia, a born-again believer, who spent his years teaching high school and Sunday-school, ... “There is little doubt that God Himself prepared me for this study, and God’s ...
Breaking Medicine News(10 mins):
(Date:1/24/2017)... Market Research Future has a half cooked research report on Global Wound ... and expected to continue its growth by the end of 2022. ... Wound Closure ... 2019 and reaching a value of 13 billion by 2019 and 21 ... Wound Closure Device Market has been growing rapidly and is expected to ...
(Date:1/24/2017)... -- When tragedy strikes, victims often can,t communicate, and first responders ... and who back home is wondering about them. ... safety of their family and friends, while helping first responders get ... crisis. ... find yourself or your family in one of these situations, BioToo ...
(Date:1/24/2017)... , Jan. 24, 2017 Data4Cure, Inc. today ... using its Biomedical Intelligence® Cloud - a semantic data-driven ... multitude of genomic, molecular and clinical data that are ... at a session hosted by Data4Cure at the Precision ... CA. The company,s Biomedical Intelligence® ...
Breaking Medicine Technology: