One of the main symptoms of congestive heart failure is effusion in the lungs. At present, people need to go to the hospital to detect this symptom. However, because the history of a new device may be rewritten, people may soon be able to check themselves at home at any time. It is understood that when a person has congestive heart failure, his heart is too weak to draw enough blood from his lungs, which will lead to blood reflux in pulmonary veins and capillaries, resulting in pressure. This internal pressure causes fluid to accumulate in the lungs.

The sensor device developed by Singapore’s Chen Dusheng hospital and Nanyang Technological University can monitor the sound of air passing through liquid filled lungs. It consists of a stethoscope type acoustic sensor fixed on a smart phone.

When feeling shortness of breath, the patient only needs to place the sensor in front of the chest for 10 seconds. The device will hear the lung sound and upload the data to a cloud computing based server through mobile phone software. The algorithm then processes the data and determines the procedure for fluid accumulation to determine whether congestive heart failure is a possibility of causing the symptom.

What can stethoscope acoustic sensors do

The relevant reading will then be transmitted back to the mobile phone and displayed on the screen. Based on this information, users can choose whether to go to a doctor or continue to choose a healthy lifestyle or continue to take heart drugs.

In the laboratory test of 86 patients with congestive heart failure, compared with the current “gold standard” diagnostic methods (such as X-ray and CT scan), the diagnostic accuracy of the system is 92%. The further development of this technology will further improve this figure.

Associate Professor ser wee of Nanyang University of technology pointed out that at present, this diagnosis can only be carried out through clinical examination and can not be put into daily medical treatment. “Our intelligent medical devices can be used by anyone, anywhere, and the number of times of use is not limited, which will make early dry precharged heart failure possible.”

Responsible editor: CT

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