A smartphone app that enables at-home lung function monitoring for people with lung disorders such as asthma, COPD, and COVID-19.
People suffering from asthma, COPD, and other lung diseases have no convenient ways to monitor their lung function at home. They can only do so in the clinic, or with expensive portable instruments that require repeated forced breathing maneuvers.
Asthma and COPD affect 25 and 16 million people in the United States, respectively. For these and other lung diseases, changes in lung function are closely related to disease control, quality of life, and prognosis. Unfortunately, pulmonary function testing (PFT) is not widely available in primary care practices, so patients can only have their lung function measured when they visit subspecialty centers.
Easy, accurate, and convenient lung function monitoring at home would help identify acute or chronic changes. Acute changes could help patients spot asthma attacks early on, so they can administer rescue medications or seek proper care. Long-term monitoring could help patients and physicians evaluate whether treatments are working or if changes are needed.
AWARE is our solution to measure lung function at home simply using your smartphone. Leveraging speakers and microphones already built into most smartphones, AWARE acts as an ultrasonic sonar to map the airways. While the patient breathes normally, ultrasound waves produced by the speakers travel into the airways, reflect off the airway surfaces, and are sensed by the microphone. Using sophisticated signal processing techniques, AWARE separates true airway signals from the noise. Machine learning algorithms use those signals to map the airways, estimating airway caliber and quantifying airway narrowing or obstruction. Personalized reports can help patients recognize when to seek care (e.g., asthma attacks) and long-term trends can help physicians know when treatment changes are needed.
AWARE has several advantages over any existing solutions. It requires no expensive equipment. It directly maps the airways, rather than depending on air flow to indirectly measure lung function. Therefore, AWARE does not need forced breathing maneuvers, making it easy to use by vulnerable populations, including children, older adults, and those with severe lung disease.
We are currently in the final stages of laboratory testing to fine-tune signal processing algorithms, and we will start to gather normative data from healthy individuals in upcoming months.
The competitive landscape analysis below summarizes key features of this solution, and current competitors working to solve similar healthcare problems.
We have secured funding to finish lab development and to gather normative data in healthy adult and pediatric subjects. Through PInCh, we will translate our research into the clinic and study AWARE in actual patients with lung diseases. We will work towards FDA approval using data collected during the project. We will also work to create a HIPAA-compliant interface that could be integrated to electronic health records or used to submit reports back to the patient’s primary care provider. We foresee the technology could be licensed to health systems and primary care practices. The device could also be sold directly to consumers (e.g., patients who want to monitor their lung function at home) as a stand-alone solution or as part of a subscription service to monitor lung health.
AWARE could easily be implemented for tele-medicine. This will be particularly important in the current pandemic. AWARE will allow for lung function monitoring at home, providing physicians with objective data during tele-medicine encounters. Patients will not need to attend health care settings and use shared equipment, minimizing their risk. AWARE could also be used to detect clinical worsening in patients with COVID-19 or to monitor their recovery.
How will AWARE benefit patients?
By regularly monitoring lung function at home, AWARE will help patients identify acute changes (e.g., the beginning of an asthma attack) so they can seek proper care. As a tele-medicine tool, long- term AWARE monitoring will help physicians determine if medications are working well or whether changes in management are necessary.
How is AWARE different from other portable instruments to measure lung function?
There many differences. The two main ones: 1) AWARE will act like a sonar, sending signals into the airways to map them and detect narrowing, and therefore it works without complicated breathing maneuvers. 2) AWARE will leverage existing smartphone technology, and therefore it does not need expensive or complicated equipment.
Will AWARE provide the same information as traditional spirometry or other lung function tests?
AWARE will use a completely different approach to evaluate the airways. We are currently working to determine if AWARE will function as a surrogate for traditional PFTs, or if it will also accurately measure different characteristics of the airways that are currently not provided by other tests.
How will patients learn how to use AWARE?
AWARE will be very simple to use. The user interface (mobile app) will include instructions and a video demonstrating its use. All the patient needs to do is hold the mouthpiece and breathe normally. AWARE will do the rest.