M-mode And Measurements

Question 1

What is the main benefit of m-mode?

Answer 1

Has a higher temporal resolution than 2D

Question 2

What 5 things are assessed with AV/LA M-mode?

Answer 2

1. Ao root wall motion
2. Variations in LA size
3. LA size during systole
4. Shape of AV cusp
5. Movement of AV cusp

Question 3

What is assessed with m-mode of the MV?

Answer 3

1. MV structure
2. MV motion

Question 4

What is EPSS?

Answer 4

E point to septal separation (gap between the MV and IVS when MV fully open)

Question 5

How does SAM appear on m-mode?

Answer 5

AMVL is dragged anteriorly during mid-systole

Question 6

What is assessed with m-mode of the LV?

Answer 6

Wall motion and EF/FS

Question 7

How to calculate fractional shortening with LVIDd and LVIDs?

Answer 7

FS= LVEDD - LVESD/LVEDD x100

Question 8

Abnormal TAPSE

Answer 8

<17mm

Question 9

Measurement of RV systolic function

Answer 9

TAPSE

Question 10

True or false. M-mode has a high PRF

Answer 10

True

Question 11

Where is the LA measured when using m-mode on ECG?

Answer 11

Near the end of the T wave