An emergency medical device, comprising: an emergency medical subsystem including at least one operational component which degrades over the lifetime of the device, the subsystem operable to execute an emergency medical procedure; and an emergency medical controller operable to control an activation of the emergency medical subsystem, wherein the emergency medical controller is structurally configured to conditionally actuate a device readiness indicator indicative of an operational readiness of the at least one operational component to execute the emergency medical procedure; wherein the emergency medical controller is structurally configured to conditionally actuate a failure warning indicator (25, 51) indicative of an impending failure of the operational readiness of the at least one operational component to execute the emergency medical procedure; and wherein the emergency medical controller includes a predictive failure analyzer structurally configured to: use a soft-failure limit as an indicator of premature degradation which provides a predictor of future failure and use a hard-failure limit as an indicator of actual failure; and actuate the failure warning indicator based on a predictive failure analysis of a premature degradation of the at least one operational component. an emergency medical subsystem including at least one operational component which degrades over the lifetime of the device, the subsystem operable to execute an emergency medical procedure; and an emergency medical controller operable to control an activation of the emergency medical subsystem, wherein the emergency medical controller is structurally configured to conditionally actuate a device readiness indicator indicative of an operational readiness of the at least one operational component to execute the emergency medical procedure; wherein the emergency medical controller is structurally configured to conditionally actuate a failure warning indicator (25, 51) indicative of an impending failure of the operational readiness of the at least one operational component to execute the emergency medical procedure; and wherein the emergency medical controller includes a predictive failure analyzer structurally configured to: use a soft-failure limit as an indicator of premature degradation which provides a predictor of future failure and use a hard-failure limit as an indicator of actual failure; and actuate the failure warning indicator based on a predictive failure analysis of a premature degradation of the at least one operational component. wherein the emergency medical controller is structurally configured to conditionally actuate a device readiness indicator indicative of an operational readiness of the at least one operational component to execute the emergency medical procedure; wherein the emergency medical controller is structurally configured to conditionally actuate a failure warning indicator (25, 51) indicative of an impending failure of the operational readiness of the at least one operational component to execute the emergency medical procedure; and wherein the emergency medical controller includes a predictive failure analyzer structurally configured to: use a soft-failure limit as an indicator of premature degradation which provides a predictor of future failure and use a hard-failure limit as an indicator of actual failure; and actuate the failure warning indicator based on a predictive failure analysis of a premature degradation of the at least one operational component. use a soft-failure limit as an indicator of premature degradation which provides a predictor of future failure and use a hard-failure limit as an indicator of actual failure; and actuate the failure warning indicator based on a predictive failure analysis of a premature degradation of the at least one operational component.