Healthcare products giant Philips Healthcare issued a Hong Kong warning on HeartStart MRX heart monitors and defibrillators used in emergency transport and EMS environments.

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Health products company Philips Healthcare warned Hong Kong regulators on potential problems in its HeartStart MRx heart monitors and defibrillators, which may not hold up in a "transport environment" such as emergency medical services.

The devices may exhibit "accelerated wear" in high-stress use environments, which may cause breakdowns at the therapy connection port.

That could eventually prevent the device from sensing when its therapy paddles are connected, preventing the system from providing therapy.