The original ACEP guidelines can be found here.
This table from (Annals of Emergency Medicine Volume 58, Issue 1, July 2011, Pages 12–20) shows the IUPs eventually discovered on f/u vs. what was seen in the ED at various thresholds of bHCGs.
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Editor-in-Chief, at EMCrit.org
An ED Intensivist from NY.
Professor
Chief, Division of Emergency Critical Care
Director, Resuscitation and Acute Critical Care Unit
Stony Brook Medicine
Stony Brook, NY, USA
No conflicts of interest (coi).
Professor
Chief, Division of Emergency Critical Care
Director, Resuscitation and Acute Critical Care Unit
Stony Brook Medicine
Stony Brook, NY, USA
No conflicts of interest (coi).
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Scott- agree with all you said in this podcast.. I think the major problem with the use of a single discriminatory zone, lies largely in the definition of IUP. These old studies with 1500-2000 endocavitary, and 6000-6500 for trans-abdominal, are all based on the definition of IUP being a gestational sac. With our current definition of at least seeing yolk sac to call it IUP (due to pseudogesational sacs), I don’t think those old numbers for discriminatory zone even apply anymore whatsoever: When we’re talking about discriminatory zone for Yolk Sac, the numbers, as expected, much higher: Here’s a study… Read more »