Bi-Modal Volume Variation and ED Design:
Major Causes of ED Crowding
Bi-Modal: Two EDs in One
For 12 hours of the day, a typical ED serving 50K patients is actually running at 74K and for 12 hours of
the day it is only running at 26K.
So why do we build EDs as if they are a 50K volume ED?
Every ED designed this way will fail for 12 hours every day.
The Cost of Building an ED of Appropriate Size
Accommodating the peak volume of a typical 50K ED would require a 50% increase in the number of beds.
EDs have been systematically designed under-capacity:
- Lack of information
- Excessive cost at $1-1.5M per bed
- Lack of real estate
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