DopFone is a mobile app that turns a smartphone speaker into a Doppler-like sensor so pregnant people can monitor a fetal heartbeat at home between checkups. The project was developed at Georgia Tech after Alex Adams and his wife experienced two miscarriages; Adams says the idea is about "filling the gaps between checkups." Poojita Garg joined the work while completing her master’s degree and is now pursuing a PhD at the University of Washington.
Garg tested DopFone on 23 patients and reported a plus–minus of 4.9 beats per minute, which is within the clinical standard range of eight beats per minute for reliable fetal heart rate measurement. Adams says the app measured within two beats per minute in most cases, with an error rate of less than 1%.
Researchers say the app could give more consistent heart rate data outside clinics and may help people in areas with limited health care. They caution it may increase anxiety for some users and say it should be recommended by a doctor, not replace clinic care. The research appears in Proceedings of the ACM. Source: Georgia Tech.
Difficult words
- miscarriage — loss of a pregnancy before birthmiscarriages
- checkup — a routine medical appointment to check healthcheckups
- sensor — a device that detects or measures something
- clinical — related to medical treatment or hospitals
- error rate — the frequency of mistakes in a measurement
- anxiety — a feeling of worry or nervousness
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Discussion questions
- Would you use an app like DopFone to check a fetal heartbeat at home? Why or why not?
- How could tools like this help people who live far from clinics or have limited health care access?
- What problems might happen if people rely on an app instead of visiting a doctor?
