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, EMCrit.org at EDECMO LLC
An ED Intensivist from NY. 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 »
[…] review Dr. Scott Weingart’s Practical Evidence Podcast #3 – ACEP 2012 Management of Early Pregnancy, in which he summaries the ACEP 2012 Clinical Policy on this […]