Patient flow shapes nearly everything that happens in an emergency department. It affects wait times, care delivery, clinician workload, and hospital throughput.  When movement slows, the impact extends beyond the waiting room into inpatient units, staffing strain, and patient experience. How leaders understand and manage flow directly influences operational performance across the hospital.

When patient flow slows down in the emergency department, the delay is easiest to spot at the front door.

Patients wait longer to be seen. The waiting room fills. Triage becomes the pressure point everyone can see. From the outside, it can look like the problem starts there.

Often, it does not.

When delays finally show up at intake, the slowdown has usually been building elsewhere. Beds stay full longer than expected. Admitted patients remain in emergency department rooms. Staffing gaps and limits beyond the hospital quietly close in.

That distance between where delays appear and where they begin shapes how Evan Howell, PA-C, approaches patient flow.

As chief operating officer at ApolloMD, Howell spends much of his time tracing delays backward. He follows what patients experience at the front door to the decisions, constraints and handoffs deeper inside the hospital.

“No matter how big your emergency department is or how much staff you have, there’s always a point in the day when more volume is coming through the front door and ambulance bay than you can handle instantly,” he says.

Those moments do not create the problem. They reveal it.

Why patient flow problems are rarely just a front-end issue

Before the pandemic, slowdowns in the emergency department followed a script leaders understood. Patient volume rose. Staffing flexed to meet demand. Beds upstairs were usually open. When waits stretched out, the focus stayed on triage and the front door.

That script no longer applies, Howell says.

“Since the pandemic, everything reset,” he says. “Now the volumes are back and continue to grow each year.”

Many hospitals today face nursing shortages, fewer available inpatient beds, and limited community-based options for patients who need care after being discharged from the hospital. As a result, patients stay in the hospital longer. That delay moves backward. Admitted patients remain in ED beds. Treatment rooms fill. New arrivals wait.

What looks like a triage problem is often the last link in a much longer chain.

“If all inpatient beds are full, it makes it difficult to move newly admitted patients out of the ED,” he says. “And that decreases the capacity of the ED and impacts our ability to efficiently intake and place arriving patients.”

For Howell, improving flow starts with looking beyond the emergency department itself. When clinician-led teams assess patient movement, they examine the full path of care, from arrival to discharge or admission, and what resources are available in the community after patients leave the hospital.

“We still always evaluate the front-end processes looking for any low-hanging fruit,” he says. “But to truly assess and improve patient flow, we must also look at every stage of the patient’s course in the ED and on the inpatient units and floors. What’s happening in the middle and the back end, and even what’s happening in the community.”

What patients experience when flow slows down

For patients, long waits feel personal.

“Most people don’t come to the emergency department on a good day,” Howell says. “For many, it may be one of the worst days of their lives.”

When people wait for hours without clear communication, they can feel ignored or unimportant. Even when medical care is appropriate, the experience of long waits can stay with them.

“How quickly you’re seen matters,” Howell says. “But so does how you’re treated while you’re waiting, and how clearly that wait is explained.”

Clear explanations and regular updates are essential to effective, empathetic patient communication.

“If you don’t explain what is happening and why,” Howell says, “patients may feel like their conditions and concerns do not matter. The message must be the opposite. You most certainly matter, and that’s why we’re doing everything we can to start your care as quickly as possible.”

What it’s like for clinicians when the day stops moving

For clinicians and staff, poor patient throughput wears people down.

“The busiest days aren’t always the hardest days,” Howell says. “The hardest days are when nothing is moving.”

When beds are blocked and patients cannot move through the system, clinicians spend more time tracking down answers, making phone calls and working around obstacles. Less time goes to direct patient care. Even days with fewer arrivals can feel exhausting when progress stalls.

“If flow is good, you can see a lot of patients and not feel overwhelmed,” Howell says. “When flow is bad, even a lighter volume can feel brutal.”

That reality shapes how ApolloMD approaches operational support. The aim is to remove operational obstacles so clinicians can focus on patient care rather than compensating for system delays.

How teams keep care moving when rooms are full

When beds are limited, teams have to work with the space they have, not the space they wish they had.

Howell points to one approach called vertical flow. The name sounds technical, but the idea is simple.

Instead of waiting for a bed to open, patients who do not immediately need a bed  begin care right away. They are evaluated by a clinician, have tests ordered and start their visit while seated, often in large recliners or chairs in “non-traditional” care areas.

“Many patients don’t need a bed for their entire visit,” Howell says. “But if they are left to sit in the waiting room for hours, their evaluation cannot start and that delays their diagnosis and treatment. Not only can that lead to potentially worse outcomes for the patients, it also contributes to ever increasing length of stays and decreasing ED throughput.”

We always instill in our clinician teams that the sickest patient in the ED may be sitting in the waiting room waiting to be seen.

Vertical flow allows us to begin earlier without tying up treatment rooms. With this approach, lab work and imaging begin sooner. While results are pending, teams can decide who truly needs a bed and who can safely continue care without one.

Helping discharge-ready patients move through care

Vertical flow works best when it connects to what comes next, Howell says.

Most patients who arrive at the emergency department are likely to be discharged home, but that is not always clear when they first arrive. Only after an exam by a clinician and diagnostic testing begins does it become apparent who needs a bed and who does not. To account for that uncertainty, ApolloMD teams use what Howell calls a split flow pathway.

The idea is to give all arriving patients a clear place in the process without tying up treatment rooms for those who do not need one immediately. Blood draws, imaging and time spent waiting for results happen in areas specifically designed for those purposes.

“We’re not just asking where patients are seen,” Howell says. “We’re asking where blood is drawn, where imaging happens and where people wait safely for results.”

When the split flow and vertical care processes are in place, patients who are ready to go home move through care more smoothly, he says. Beds stay open for those who need closer monitoring, more extended treatment, or admission.

What changes when hospitals take a systemwide approach

When hospitals step back and look at how patients move through the entire system, some changes are implemented and quickly show results, Howell says. People are seen sooner. Fewer patients leave before seeing a clinician. The work of getting people back to the comfort of their home becomes steadier and easier to manage.

What does not change as fast is what happens outside of the ED.

“If there are no available inpatient beds to move ED admissions to in a timely manner, it takes a collaborative, multidisciplinary approach to create solutions” Howell says. “That’s still the most complex part of the problem to solve for.”

ApolloMD supports both emergency and inpatient operations, applying system-wide throughput strategies to improve patient flow across partner hospitals.

What hospital and ED leaders can take away

There is no single fix to complex ED and inpatient throughput problems.

Patient flow improves when teams work together across departments.

Listening to frontline staff reveals where flow truly breaks down.

Effective assessments include everyone involved in patient care.

Problems that look simple rarely are.

Fixing the most visible issue alone can create new bottlenecks.

Clear communication builds trust and supports sustainable change.

Why Clinician Led Leadership Makes a Difference

Howell emphasizes that process and quality improvement initiatives are most effective when the people leading them understand what it takes to deliver care in the emergency department and remain actively involved throughout the process.

“We’re not coming in, making “pie in the sky” recommendations and leaving,” he says. “We focus on solutions utilizing existing space and resources, and we’re involved from the initial assessment through formal implementation and with the essential ongoing monitoring.”

That level of involvement matters, especially when change requires both operational and cultural shifts. While many solutions look effective in theory, not all translate seamlessly into real-world environments. The difference is tailoring approaches to each hospital’s unique challenges and remaining engaged to evaluate outcomes and  adjust as needed.

With more than 25 years in emergency medicine and extensive process improvement experience, Howell has developed a clear understanding of where delays surface and where they originate. That perspective helps teams focus on solutions that work in practice, not just on paper.

When leaders understand the realities of the clinical environment, they are better equipped to improve patient flow without adding strain or creating unintended downstream challenges.

Optimize Throughput and Hospital Capacity

Explore clinician-led strategies to improve patient flow, reduce bottlenecks, and strengthen coordination across the emergency department and inpatient units.