Title: Model and Integrate Medical Resource Availability into Verifiably Correct Executable Medical Guidelines - Technical Report,
Abstract: Improving effectiveness and safety of patient care is an ultimate objective
for medical cyber-physical systems. A recent study shows that the patients'
death rate can be reduced by computerizing medical guidelines. Most existing
medical guideline models are validated and/or verified based on the assumption
that all necessary medical resources needed for a patient care are always
available. However, the reality is that some medical resources, such as special
medical equipment or medical specialists, can be temporarily unavailable for an
individual patient. In such cases, safety properties validated and/or verified
in existing medical guideline models without considering medical resource
availability may not hold any more. The paper argues that considering medical
resource availability is essential in building verifiably correct executable
medical guidelines. We present an approach to explicitly and separately model
medical resource availability and automatically integrate resource availability
models into an existing statechart-based computerized medical guideline model.
This approach requires minimal change in existing medical guideline models to
take into consideration of medical resource availability in validating and
verifying medical guideline models. A simplified stroke scenario is used as a
case study to investigate the effectiveness and validity of our approach.