Thread: For #POCUS I'd like to say a word about #MAPSE . It's the quickest assessment of global LV function you can do. It is not necessary to do real time M-mode, a simple 4-chamber view will do. Why?
2/ Basically, M-mode can be done by reconstruction after acquisition, or even by caliper measurement on the loop. Frame rate matters very little, as the Mitral plane motion moves slowest at end diastole and end ejection.
3/ Motion of the different parts of the mitral plane is different, so more than one plane site needs to be measured. In a study of 1266 normal subjects (the #HUNT study), mean MAPSE was 1.56 cm for 2 walls (from 4Ch), 1.58 cm for 4 (from 4ch and 2ch) and 1.51 cm for 6 (from all 3
4/ Which means that 4-chamber is enough the difference by adding more planes is less than one mm, which is the lower limit of most software. onlinelibrary.wiley.com/doi/10.1111/ec…
5/ In addition, it will be more sensitive in the case where there is thick wall and small EDV. ncbi.nlm.nih.gov/pubmed/10409535
6/ The mitral plane is also the most robust structure visible where there is poor image quality. Thus, MAPSE for global systolic function assessment will reduce sonographer's exposure time. MAPSE is age dependent, but a cut off of 1 cm will exclude serious pathology
unroll
@threadreaderapp
Share this Scrolly Tale with your friends.
A Scrolly Tale is a new way to read Twitter threads with a more visually immersive experience.
Discover more beautiful Scrolly Tales like this.