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The framework

Flow Physics — how hospitals move

Flow Physics™ is the operational framework behind When Beds Don't Move. It helps healthcare organizations improve patient throughput by reducing operational friction and increasing execution reliability across the support-services chain.

Built on First Movement Time™, Activation Windows™, and a seven-engine model of hospital flow.

Read the Book Apply It in Your Hospital
When Beds Don't Move, Flow Physics™ by Donald Sipp Jr.
Core components

What Flow Physics™ is built on

Hospital throughput is not a scheduling problem — it's a physics problem. Flow Physics™ models how beds, teams, and information actually move, and where that movement breaks down.

Timing

First Movement Time™

The critical interval between when work becomes available and when it actually begins — the hidden delay most hospitals never measure.

Timing

Activation Windows™

The recurring windows when demand surges and response capacity must already be in position — not assembling after the fact.

Structure

The Seven Engines

A seven-engine model of hospital flow: the interdependent operational systems that must run in rhythm for patients to move.

Structure

The Support Services Chain™

EVS → Transport → Nursing. When the chain runs in rhythm, beds turn and the ED decompresses. When one link slips, the whole system stalls.

Principles

The Five Laws of Flow Physics™

The governing principles of how flow systems behave — and how they break under pressure. Explored in depth in When Beds Don't Move.

People

Frontline Execution

Frameworks only move beds when frontline teams are trained to execute them — which is why Flow Physics™ pairs with ITC's transport training and certifications.

Inside the system

The frameworks, visualized

The Five Laws of Flow Physics™The Five Laws of Flow Physics™ — how flow systems break under pressure.
The Support Services Chain™The Support Services Chain™ — EVS → Transport → Nursing. In rhythm, the ED decompresses.
Proven in practice

What the framework delivered

Example results from one documented engagement at a 450-bed tertiary-care teaching hospital.

38%

Faster bed turnaround

Discharge-to-clean cut from 93 to 58 minutes — sustained.
Example result
52%

Faster at peak demand

Turnaround held at 45–50 minutes through the afternoon discharge surge.
Same engagement
60%

Of delay is pre-cleaning

Most bed-turnaround time is lost before cleaning even begins — the gap Flow Physics™ closes.
Throughput analysis

Example results from a single documented engagement. Operational outcomes vary by facility, staffing model, and baseline conditions.

Put it to work

Two ways to use Flow Physics™

Read the book

When Beds Don't Move lays out the full framework — the Five Laws, the engines, and the support-services chain — with the operational playbook behind them.

When Beds Don't Move

Apply it with Donald

Patient Flow Consulting applies Flow Physics™ directly to your hospital — diagnosing where flow breaks and rebuilding the support-services chain around it.

Patient Flow Consulting