2016 Point-of-Care Testing Ultrasounds 
Taming the SRU
AUGUST 30, 2023
Notably, lung ultrasound for the diagnosis of bacterial CAP demonstrated exceptional stand-alone diagnostic accuracy in 33 studies including 4,901 adults and children in the emergency department, with a pooled sensitivity of 92% and specificity of 90%. 2016 Dec;115(6):317-21. 2016 Aug 23;134(8):e113. PMID: 29094869. Brigden ML.
EB Medicine
JANUARY 2, 2019
Jeff: Great starting point since there is certainly a lot of debate about the discriminatory zone. So to get us all on the same page, the discriminatory zone is the b-HCG at which an IUP is expected to be seen on ultrasound. A 2010 Meta-Analysis found a NPV of 99.96% when an er doc identified an IUP on bedside ultrasound.
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