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Echo-of-the-Day
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Echo-of-the-Day Information
The Echo-of-the-Day is a presentation of 1 or more video loops to present an important topic in echocardiography. Please reveiw the image or video loops and then answer the questions below. After you have answered the questions you can view the explanation and obtain CME credit (if available).

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Loop Text Key  
Preop Preop TEE or TTE
Intraop An Intraop TEE
IntraopPreOp Intraop TEE or TTE before Operation
IntraopPostOp Intraop TEE or TTE after Operation
IntraopEnd Intraop TEE or TTE at End of Anesthesia
Post Op Postop TEE or TTE
  = Legacy/Old Video Formats
Echo of the Day Information Table
IntraopEnd is usually a TEE after the Operation and after some event occured to show a change in the TEE
LA Size
Case#: 148
AMA CME Units: 0.25 Units
Estimated Time: 15 minutes.
Presentation:
A patient presented with this echo image:
 
Loop(s):
Case Discussion
 
The left atrium is usually measured in the anterior-posterior or medial-lateral dimensions. The AP dimension is 38 ± 6 mm and the ML dimension is 39 ± 7 mm.These dimensions are made using TTE rather than TEE. The LA volume is 22 ± 6 mls / m2. LA size has also been compared to the aortic root diameter (SOV to SOV diameter). Normally, the ratio of aortic root:left atrial diameter is 1:1.
 
TEE has 4 views of the LA but the views may not yield accurate results. The ME AVSAX view where the LA diameter is measured has yielded a good correlation with the LA diameter by TTE. Still, TEE will underestimate the LA diameter by 6-16%. Another study found that the ME basal long axis view (transducer at 120-150 degrees) correlated with TTE than other views.
 
CME Section
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CME Sponsor: University of Nebraska Medical Center - Center for Continuing Education This activity has been planned and implemented in accordance with the accreditation requirements and policies of the Accreditation Council for Continuing Medical Education through the joint providership of University of Nebraska Medical Center, Center for Continuing Education and JLS Interactive, LLC.
The University of Nebraska Medical Center, Center for Continuing Education is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.

CE Sponsor: American Society of Radiological Technologists (ASRT)This activity is approved by the American Society of Radiologic Technologists (ASRT) as sonography-related continuing education (CE). Credit(s) issued for successful completion of ASRT-approved CE activities are accepted by the American Registry of Diagnostic Medical Sonography, American Registry of Radiological Technologists, Cardiovascular Credentialing International and Canadian Association of Registered Diagnostic Ultrasound Professionals. Contact the applicable registry for additional information / restrictions on their acceptance of ASRT CE credit.
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