CADence digital stethoscope's better than a conventional one

2015-09-28 08:05:00  ·  649 Views  ·  10 Likes  | 

It may be about time the technology of the stethoscope, derived from the Greek for chest exploration, was upgraded. It was invented in 1816, the years that the Mfecane wars started in South East Africa. That’s when Rene Theophile Hyacinthe Laennec, a young French physician at the Hôpital Necker-Enfants malades in Paris, was examining a young female patient. It seems he was too embarrassed to place his ear to her chest to listen to its revealing sounds, a technique known as immediate auscultation, a form of listening, and used by physicians of the time. Instead, he invented the stethoscope and with it, clinical auscultation.

Now, Dr Marie Johnson, a USA engineer, has invented CADence, a digital device to do the job, and described it at Royal Society of Medicine (RSM) Innovation Summit in September.

Her company, AUM Cardiovascular has a core goal of diagnosing obstructive coronary artery disease in patients with chest pain and two or more risk factors. AUM is a Sanskrit syllable meaning “to make a continuous low humming sound.” CADence is a hand-held, fast, affordable device that picks these low frequency noises from feeble diastolic murmurs that conventional stethoscopes don’t pick up. The motivation for CADence is direct experience of personal, unexpected cardiovascular tragedies.

It take about twelve minutes to have a reading from CADence’s algorithms, about eight minutes for measurement, then four minutes for data transmission, using WiFI and Bluetooth. CADence is used in 25 sites, is available in the USA, and is awaiting Food and Drugs Administration (FDA) approval. It could be several years before it’s on sale in Africa, but it’ll soon replace Laennec’s techology