A few months ago, during separate visits to an emergency department and an urgent care center, I experienced what many patients and clinicians now consider routine: long waits, crowded spaces, and visible strain on staff. It raised a familiar question that I’ve been asking for years: If the bottleneck is the emergency department, why does adding capacity so rarely solve the problem?
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Throughout modern healthcare systems, so-called bottlenecks are usually symptoms of deeper system constraints rather than fundamental shortages of space or effort. To fix the flow, we must stop looking at where the line is forming and start looking at why the line exists in the first place.
The bottleneck we all point to
Emergency departments are frequently blamed for delays in care. Recent data show a staggering trend: In late 2025, more than 160,000 patients in England’s National Health Service waited 12 hours or longer in emergency departments in a single month. Performance against the four-hour standard has fallen far below historical expectations, with tens of thousands waiting half a day just for a bed after the decision to admit had been made.
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Comments
Hospital Bottlenecks
One of the reasons for delayed inpatient discharges is no one is availble to transport the patient home or to the next stop (e.g., rehab or skilled nursing facility). Some hospitals have developed "discharge lounges" where discharge patients await transport, but this is simply another symptom of waste in the system.
I think there will always be waste in this system, even as someone who is skilled at thinking about discharge needs upon admission. Situations change all the time, even up to discharge.
Is the Waste Inevitable - or Designed?
You highlight a very real operational friction point, Mary.
Transport delays feel inherently variable - and in healthcare, circumstances do change rapidly. Yet in many systems, what appears “inevitable” often turns out to be the predictable outcome of how capacity, policies, and coordination are structured.
The existence of discharge lounges is interesting in that regard: are they absorbing unavoidable variability, or protecting a deeper constraint we’ve chosen not to address?
Variability will always exist. Chronic delay, however, I'm sure you'll agree - usually has a design logic behind it.
Thank you for raising this practical example.
Shift one constraint to reveal the next one
Discharge lounges are being pointed to, here in Australia, as a potential solution. But I tend to follow your thinking, Akhilesh, that they protect a deeper constraint that isn't being addressed. Yes, variability will always exist. My thoughts are that if you were capable of shifting the system orientation from capacity to flow, then you would very quickly identify the next layer of constraints, and that would answer the discharge lounges question.
Nice Article
I really enjoyed this article. It's a nice expose of a lot of problems I have seen in working with (and visiting) ERs over the years. I differ with one statement, though..."Each of these decisions may appear reasonable in isolation." I would not look at the first two decisions as "reasonable," at least not from the viewpoint of a patient. Patients do not suffer medical emergencies on the admin staff's schedule; this is batching for someone's convenience (and probably makes their work less efficient). Neither ERs only operate during "normal business hours." Normal business hours for an ER are 24/7, and so someone with transfer approval needs to be available 24/7.
I would also agree with Mary that there will probably always be some waste observable in the ER flow, but of course the amount of waste is going to depend on who is defining value.
Patient Perspective
Thank you, Rip, I appreciate both the kind words and the thoughtful challenge.
You’re absolutely right from a patient perspective - and that lens was very much present for me, as the article grew out of my own ER experience as a patient.
When I described the decisions as “reasonable in isolation,” I was referring to how they are often justified internally - around staffing efficiency or policy consistency. The issue, as you point out, is that what feels locally rational can be deeply misaligned with patient value.
And I agree: in healthcare, how we define value ultimately determines what we call waste.
Thank you for advancing the discussion.
bottlenecks created year after year
I'm not sure about the UK but here in France, ER tend to be used as as a substitute for the traditional family doctor. When unable to get an appointment with their physician, people just go to the hospital. So the flow of inpatients tends to follow the "normal working hours". You take the kids to school, then you go to the ER, then back to home...
This is due to years and years of "numerus clausus" in MD studies. Not enough doctors were graduated just to cope with population increase since the 1970's, and now "boomers" retire all at the same time. Another example of faulty policies !
Policy Constraints
Thank you for sharing that perspective, Hubert.
It’s a strong reminder that what shows up as an ER bottleneck is often the downstream effect of earlier policy constraints. When access to primary care tightens, the pressure doesn’t disappear — it simply shifts elsewhere in the system.
There’s a real contradiction at play: we want controlled training capacity and cost stability, yet we also expect timely access to care. When that tension isn’t resolved upstream, the ER becomes the visible point of strain.
Appreciate your broadening the discussion beyond operations to structural design.
Benchmarking Best-in-Class ED Performance
Excellent article. You might be interested in how Robert Wood Johnson University Hospital Hamilton addressed this problem in the late 1990s and found about the same root causes. They addressed them effectively and evolved into a best-in-class ED operation. Details may be found in the case study in my 2008 book Benchmarking for Hospitals published by ASQ Quality Press but currently out of print. The case study may be available on the ASQ web site.
From Recurring Bottlenecks to Best-in-Class ED Performance
Thank you, Dr Sower. I appreciate you sharing that example.
It’s encouraging to hear that Robert Wood Johnson University Hospital Hamilton identified similar root causes and addressed them successfully. That consistency across time & institutions suggests these bottlenecks are structural rather than situational.
I’ll look into the case study in Benchmarking for Hospitals; thank you for pointing readers toward it.
General comment
Hello Akhilesh,
Excellent article that opens up a pandora's box for the most needed services, It is hard to get into emergency room unless you arrive by an ambulance. People with severe pains are waiting in the front room for various reasons.
Looking at the process and services will help alleviate some of the shortfalls int eh service.
Learning from Recurring Bottlenecks Across Regions
Thank you, CG. You’ve highlighted an important point.
Many of the visible delays, like patients waiting in the front room, stem from upstream constraints in process and service design. Sharing experiences across regions is invaluable, particularly when it highlights how systematic improvements can ease these recurring bottlenecks.
Bottlenecks
I am an Anesthesiologist and have worked in several acute care settings in various hospitals, both community and tertiary care centers.
While the first point about the ER facing a backlog because of non availability of beds is absolutely true, the same being true for beds being occupied in the Post Anesthesia Care Unit because of a lack of floor beds or beds of appropriate acuity, line an ICU bed or a monitored bed, the real reason for the lack of flow being a healthcare space that is fragmented by different entities to which patients belong, like one HMO vs a Medicaid patient vs Medicare or even a homeless patient. That's what is the real challenge of patient placement for discharge or further care.
To top it off, one also has false( not clinically substantiated criteria) about patient discharge or placement.
Let's assume that patients could go freely to any level or facility of care, a lot of bottlenecks would abate, barring for discharge to home or to the street!
One could make that an argument for a single payer system but underinvestment in single payer systems(NHS) or disguised " largely single payer" systems such as ours will nearly have the same outcome.
That's why in CA, with a very large MediCaid and Medicare population will continue to see poorer healthcare outcomes, not only from waiting but also from the removal of physicians progressively from the healthcare chain, who could make speedy decisions based on knowledge and experience. Today, as we all know, ERs pretty much have become a one Physician and multiple physician extender models, further impounding delays even at the ER level.
Till such time we have transparency in health care pricing with prices that are competitive and no cost shifting from government programs to private insurance, we will continue to suffer delays and denials in care, right from the ER to rehab.
Upstream Structural Constraints
Thank you, Taposh, for this thoughtful perspective.
You illustrate how many delays, from the ER to PACU and beyond, arise from systemic fragmentation: different coverage types, discharge pathways, and facility constraints. It’s a strong reminder that visible bottlenecks often reflect upstream structural constraints, and that improving flow requires attention both to the system as a whole and to local processes.
I’d welcome hearing how others have addressed similar challenges in their own hospitals or regions.
Bottlenecks That Aren't Really Bottlenecks
All hospitals have some form of bottleneck due to staffing and room availability. During a recent visit to my regional hospital, the availability of a doctor led to a long wait due to an emergency room overload. It seems the hospital had a capacity problem with insufficient staffing that had to attend to patients in the main hospital.
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