Source information came from: Annals of Emergency Medicine.
The conclusion states: "MAUDE (Manufacturer and User Device Experience) is often incomplete and frequently no corroborating
data are available. Some conditions not detected by automated external
defibrillators during self-test cause units to power off unexpectedly,
causing defibrillation delays."
Seems that there needs to be both:
a. better testing of the software and total system; and
b. better system state logging so that effective root cause analysis can occur.
Can you image this kind of problem existing and being tolerated with the flight data recorders recovered from airplane crashes?