Full Breakdown
Vertical Processing Pathway Cuts Emergency-Room Wait Times Without Adding Beds
8/20/2026, 2:18:50 AM
Study Overview
A recent study published in *Management Science* tested a decision-tree protocol that directs low-acuity patients to a “vertical processing pathway”—a treatment area equipped only with a chair. Researchers applied the protocol in the Mayo Clinic Arizona emergency department and compared outcomes with the unit’s prior ad-hoc triage approach. The protocol, which relies on up to five nurse-administered questions at triage, reduced average patient stay by roughly 11 minutes and did not increase the proportion of patients returning within 72 hours.
Why Traditional Capacity Expansions Falter
Hospital leaders have long tried to shorten wait times by adding beds or clinicians. The study’s authors note that such expansions can paradoxically attract more patients, lengthening queues—a phenomenon observed previously at the Mayo Clinic. The bottleneck, they argue, is often bed availability rather than physician capacity. By routing patients who do not require a bed to a standing-room area, hospitals can alleviate this choke point without costly construction or staffing increases.
Key Findings and Metrics
- Time saved: Approximately 11 minutes per patient stay.
- Readmission impact: No measurable rise in 72-hour return visits.
- Implementation cost: The protocol required essentially zero additional expenditure, relying only on repurposing existing space for a chair-only treatment zone.
Official Reactions
Agni Orfanoudaki, associate professor of operations management at the University of Oxford’s Saïd Business School and co-author of the study, emphasized that the approach is “a bit like a hack” that leverages existing resources. Following the trial, the central Mayo Clinic operations team contacted the emergency department staff, noting the faster patient throughput and asking about the changes implemented. The research team described the outcome as “the proudest moment” for their work.
Practical Takeaways for Hospitals
The authors recommend that emergency departments establish a dedicated vertical processing room and adopt the five-question decision protocol at triage. They stress that solutions need not be highly complex; even a modestly sub-optimal model can capture a large share of potential efficiency gains while preserving patient safety standards.
