"Going solid": a model of system dynamics and consequences for patient safety.

Area of Science:

• Healthcare Management
• Patient Safety Dynamics
• Systems Engineering in Healthcare

Background:

• Healthcare safety is a dynamic, not static, property.
• Historically, healthcare systems were loosely coupled, buffering demand surges.
• Modern efficiency drives have reduced these buffers, leading to tight coupling.

Purpose of the Study:

• To model patient safety dynamics in modern healthcare.
• To incorporate the concept of "going solid" into a dynamic safety model.
• To understand how current healthcare conditions may lead to accidents.

Main Methods:

• Utilizing Rasmussen's dynamic model of risk and safety.
• Formulating a model of patient safety dynamics.
• Analyzing the consequences of tight coupling in healthcare systems.

Main Results:

• Modern healthcare systems exhibit tight coupling, where distant events can critically impact activities.
• The phenomenon of "going solid" describes this critical interdependence.
• This tight coupling increases vulnerability to accidents.

Conclusions:

• Patient safety is a dynamic process influenced by system coupling.
• "Going solid" is a key dynamic that can compromise patient safety.
• Understanding these dynamics is crucial for preventing accidents in modern healthcare delivery.