An emergency medical device (20) (e.g., an external defibrillator/monitor) employing an emergency medical subsystem (21) for executing an emergency medical procedure (e.g., a monitoring subsystem (21) and a therapy subsystem (21)), and an emergency medical controller (23) for controlling an activation of the emergency medical subsystem (21). The subsystem (21) includes one or more operational components (22). In operation, the controller (23) conditionally actuates a device readiness indicator (24) (e.g., auditory or visual) indicative of an operational readiness of the operational component(s) (22), and conditionally actuates a failure warning indicator (25) (e.g., auditory or visual) indicative of a pending failure of the operational readiness of the operational component(s) (22). The failure warning indicator (25) may be actuated based on a predictive failure analysis of a premature degradation of the operational component(s) (22), a repeated occurrence of error conditions of the operational component(s) (22) (particularly recoverable error conditions), and a shortened reliable life of the operational component(s) (22).Un dispositivo médico de emergencia (20) (por ejemplo, un desfibrilador/monitor externo) que emplea un subsistema médico de emergencia (21) para ejecutar un procedimiento médico de emergencia (por ejemplo, un subsistema de monitoreo (21) y un subsistema de terapia (21)), y un controlador médico de emergencia (23) para controlar una activación del subsistema médico de emergencia (21). El subsistema (21) incluye uno o más componentes operacionales (22). En operación, el controlador. (23) acciona condicionalmente un indicador de disponibilidad de dispositivo (24) (por ejemplo, audible o visual) que indica una disponibilidad operacional de los componentes operacionales (22), y acciona condicionalmente un indicador de advertencia de falla (25) (por ejemplo, audible o visual) que indica una falla pendiente de la disponibilidad operacional de los componen
