HOME >> MEDICINE >> NEWS
Noise-immune stethoscope helps medics hear vital signs in loud environments

November 27, 2006--A new type of stethoscope enables doctors to hear the sounds of the body in extremely loud situations, such as during the transportation of wounded soldiers in Blackhawk helicopters. Using ultrasound technology, the kind used to generate images of internal organs, muscles and unborn fetuses, the new stethoscope design will be presented later this week at the Fourth Joint Meeting of the Acoustical Society of American and the Acoustical Society of Japan, which will be held at the Sheraton Waikiki and Royal Hawaiian Hotels in Honolulu, Hawaii.

Researchers at Active Signal Technologies, Inc., of Linthicum Heights, Md., in collaboration with the U.S. Army Aeromedical Research Laboratory (USAARL) in Fort Rucker, Ala., have developed an ultrasound stethoscope that is nearly impervious to loud noise and is capable of making accurate readings at noise levels up to 120 decibels, similar to the volume experienced at the front row of a rock concert.

Current acoustic stethoscope technology picks up and amplifies vibrations that let doctors hear the heart and lungs. These models become difficult to use effectively around 80 decibels, a noise level comparable to an alarm clock or a busy city street. When noise levels reach 90 decibels, these types of stethoscopes are rendered useless. Modern electronic stethoscopes have raised the maximum tolerable noise level to 90 decibels to 95 decibels by replacing the ear pieces with loudspeaker inserts that provide a better seal with the ear canal and replacing the tubing with electrical cables that do not pick up acoustic noise.

The challenge to build a better stethoscope originated from the Army's Small Business Innovation Research program. For soldiers wounded in combat, the first hour after sustaining an injury is known as the "critical hour," when diagnoses and emergency treatment must take place to give them the best chance of recovery. These soldiers are often transported by helicopter,
'"/>

Contact: Turner Brinton
tbrinton@aip.org
301-209-3136
American Institute of Physics
28-Nov-2006


Page: 1 2 3

Related medicine news :

1. iPods help docs improve stethoscope skills
2. Repetition reverses med students stethoscope shortcomings
3. Device helps physically disabled turn on computer
4. Case study: cross-cultural bioethics training program helps fight African brain drain
5. New drug development facility helps move medicines to market
6. Research shows aerobic exercise helps maintain muscle in elderly
7. Virtual autopsy helps identify drowning as cause of death
8. Topical retinol helps reduce wrinkles associated with natural skin aging
9. Transplanting human gut bugs into mice helps understanding of metabolic system
10. Quick, innovative procedure helps men minimize incontinence after prostatectomy
11. New research helps overcome major CPAP problem

Post Your Comments:
(Date:7/28/2014)... An estimated 68,000 women and men ... and prostate cancers – an aggressive form of the ... other parts of the body, such as the lungs, ... University College of Medicine have developed a compound ... progression by blocking tumor cells from “re-seeding.” Their discovery ...
(Date:7/28/2014)... Dallas, TX (PRWEB) July 28, 2014 ... Madrid vs. AS Roma tickets in Dallas, TX at ... on July 24th in the USA and it is an ... teams from around the world including teams from La Liga, ... 2014 teams that will battle it out on the pitch ...
(Date:7/28/2014)... Ticket Down is a dependable source for ... at the Sun Life Stadium in early September. The ... Brazil has is one that has continues to go on. ... on a consistent basis. The rivalry between South America ... recent 2014 World Cup. To the delight of soccer ...
(Date:7/28/2014)... Steven Reinberg HealthDay Reporter ... have dementia and heart rhythm irregularities are more likely to ... found. In fact, the study of more than 16,000 ... percent more likely to get a pacemaker than those without ... study is why folks with dementia are so much more ...
(Date:7/28/2014)... The Brooke Jackman Foundation ... than 200,000 books to children and families in need ... Brooke’s Cooks, a new initiative designed to promote literacy, ... at-risk children and their families in the New York ... nutrition information workshops, cooking demonstrations and readings. BJF, in ...
Breaking Medicine News(10 mins):Health News:Drexel Scientists Develop Compound to Stop Spread of Metastatic Cancer Cells 2Health News:Drexel Scientists Develop Compound to Stop Spread of Metastatic Cancer Cells 3Health News:Real Madrid vs. AS Roma Tickets Cotton Bowl Dallas, TX: Ticket Down Cuts Ticket Prices for AS Roma vs. Real Madrid International Champions Cup Tickets 2Health News:Real Madrid vs. AS Roma Tickets Cotton Bowl Dallas, TX: Ticket Down Cuts Ticket Prices for AS Roma vs. Real Madrid International Champions Cup Tickets 3Health News:Brazil vs. Colombia Tickets in Miami: Ticket Down Slashes Colombia vs. Brazil Tickets at Sun Life Stadium in Miami for Sept. 5th Showdown 2Health News:Brazil vs. Colombia Tickets in Miami: Ticket Down Slashes Colombia vs. Brazil Tickets at Sun Life Stadium in Miami for Sept. 5th Showdown 3Health News:Pacemakers Common for Those With Dementia and Irregular Heartbeats 2Health News:Pacemakers Common for Those With Dementia and Irregular Heartbeats 3Health News:Brooke Jackman Foundation Launches Brooke's Cooks, New Initiative to Promote Healthy Living Among At-Risk Youth and Their Families 2Health News:Brooke Jackman Foundation Launches Brooke's Cooks, New Initiative to Promote Healthy Living Among At-Risk Youth and Their Families 3Health News:Brooke Jackman Foundation Launches Brooke's Cooks, New Initiative to Promote Healthy Living Among At-Risk Youth and Their Families 4
(Date:7/28/2014)... 28, 2014 Concord Medical Services Holdings Limited ... ), a leading specialty hospital management solution provider and ... imaging centers in China , today ... Directors declared a special cash dividend of US$0.30 per ... on the Company,s outstanding ordinary shares. The total expense ...
(Date:7/28/2014)... CHAPEL HILL, N.C. , July 28, 2014 /PRNewswire/ ... results of a clinical trial demonstrating that CXL-1427, a ... was well tolerated in healthy volunteers. The company has ... failure in a Phase IIa clinical trial designed to ... as its dosing levels. The Phase I ...
(Date:7/28/2014)... CARLSBAD, Calif. , July 28, 2014  Isis ... following webcast:What:Isis Pharmaceuticals, Second Quarter 2014 Financial Results and ... / 7:30 a.m. PTWhere: www.isispharm.com How:Live on the ... you are unable to participate during the live event, ... a limited time at www.isispharm.com . ...
Breaking Medicine Technology:Concord Medical Declares Special Dividend 2Cardioxyl Pharmaceuticals Successfully Completes First Clinical Trial For Heart Failure Drug CXL-1427 2Webcast Alert: Isis Pharmaceuticals' Second Quarter 2014 Financial Results Conference Call 2
Cached News: