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EMBS Chapter Presents: Chaos in Cardiac Care

on March 6, 2019 from 6:00 PM to 8:00 PM

Speaker Dan Welsh, Acutus Medical
Topic Info

Atrial Fibrillation afflicts approximately 1,000,000 per year in the G-20 nations. Left untreated this mildly irregular atrial rhythm progresses to a fully chaotic atrial cardiac state over a period of 5 to 15 years. Left untreated AF progresses from intermittent bouts of irregular rhythm to chronic nearly continuous chaotic rhythms that dramatically increase stroke risk. Even in the early stages, AF creates a deteriorating quality of life due to the bouts of cardiac flutter which degrade a patient’s ability to perform normal activities.

Treatment options include both pharmaceutical and surgical courses. For most patients, pharmaceutical treatment mask the symptoms but does nothing to slow the progression of the disease. Eventually, the disease overcomes the ability of the drugs to mask symptoms and the patient requires surgical intervention. Surgical interventions are effective in 60 to 80% of early stage patients. In 25% of the successful early stage surgeries, the disease progression continues. The result is that 300,000 patients or more are effectively left untreated every year because no diagnostic method is available to guide the surgical treatment.

A new medical diagnostic has been developed that efficiently maps the electrical activity of the entire atrial chamber continuously. This allows surgical interventions to treat 80% of the previously untreatable patients. The new diagnostic uses a computationally intense inverse solution to find the depolarization charge on the surface of atrial chamber wall. Convergence of the inverse solution requires a precise anatomical surface and a knowledge of location of the catheter electrodes during the recording of the electrograms. To meet these requirements, the system incorporates a high-resolution ultrasound system and impedance-based localization system into a single catheter capable of recording 48 intracardiac electrograms simultaneously.

The system level engineering required to meet constraints imposed by phase noise, bandwidth and impedance are discussed. An introduction to some of the novel signal processing algorithms will be presented. A physical model for the impedance Localization is developed to motivate the requirements and methods for discussion of distortion in the body.

Speaker Bio

Dan Welsh is the Director of Systems Engineering at Acutus Medical Inc. He has worked in start-up companies developing medical diagnostics for nerve tremor detection, cerebral and peripheral inductive tissue stimulation, cardiac imaging and perfusion, ICU and surgical blood glucose monitoring, and most recently atrial fibrillation mapping.  During his career he also developed instruments and products used in quantum encryption, dark matter detection, oil leak monitoring, solar power controller, flow cytometry, and military grade laser tag.

Mr. Welsh started his career with a BS in Physics from the University of Chicago. He studied fusion power at the University of Maryland where he received his MSEE.  His professional life keeps him from playing soccer and starting his training as a sorcerer’s apprentice.

Location ATEC 10401 Roselle St. San Diego, 92121
Agenda 6:00p - 6:30p Refreshments, Networking
6:30p - 7:30p Presentation
Adjourn by 8:00p
RSVP  Link to:    javascript:nicTemp();  Registration begins Feb 14, Ends March 4

IEEE Members Free
Non-IEEE $5.00 at the door

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