Echo of the Day
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AMA Category 1 Credit for Physicians Only.
ASRT CME Not Available
 
Echo-of-the-Day Information
The Echo-of-the-Day is a presentation of one to four image or 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).

You can change the size and the format of the image or video loops by using the links below the image or video loop.
= Windows Media Video = MP4 Video
= QuickTime = WebM Video
= Flash = JPG Image
Video Sizes = GIF Image
1X = 200x150 pixels
2X = 400x300 pixels
3X = 6000x450 pixels
4X = 800x600 pixels
EOTD Information Table
Title: Pulse Wave Doppler Measurements
EOTD#: 115
AMA CME Units: 0.25 Units
Estimated Time: 15 minutes
CME Requirements: Active CME Session and must be a paid, active subscriber to iTEE or eTEE AND have enough CME credits in your bank. AMA CME ONLY.
 
Presentation: A patient presented with the following echo loop:
 
 
Loops:
Discussion Questions:
#1: Where should the sample volume be placed for calculations of stroke volume or regurgitant volume for the mitral valve?
 
#2: Where should the sample volume be placed for left ventricular inflow scans?
 
#3: How do you calculate decceleration time (DT) for the E wave when the E and A wave are fused?
 
#4: How does age affect the E and A wave velocities?
 
 
 
Explanation/CME Questions
Explanation:
For calculations of mitral valve volumes (stroke volume or regurgitant volume), the sample volume should be placed at the level of the mitral valve annulus. Diameter measurements should be made at the level of the mitral valve annulus also.
 
For scanning the left ventricular inflow (LVI), the sample volume should be placed at the level of the leaflet tips during diastole. Sometimes the pattern and velocities at the level of the mitral valve annulus and the leaflet tips are similar, but, there can be marked differences so measurement at the leaflet tips is considered the left ventricular inflow.
 
If the E and A wave are fused, the DT is measured by extrapolating the deceleration limb of the E wave to the baseline. Sometimes the DT is longer than the end of the A wave. A wave duration can also be extrapolated.
 
Age mostly affects the pulmonary vein flow, so any changes in the E and A wave velocities are due to ventricular compliance changes and not due to age, per se.
Please answer the following questions correctly to obtain your CME.
CME is not available until you log in with a subscription to the iTEE or Advanced TEE area and have enough CME credits in your bank.
You do not have an account. Please subscribe and get your Echocardiography CMEs today!
 
 
 
 
 
 
 
 
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