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Echo > M-Mode and Doppler > Flashcards

M-Mode and Doppler Flashcards

1
Q

What feature is better in M-Mode than 2D?

A

M-Mode has better temporal resolution

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2
Q

What is used to measure dimensions of cardiac structes?

A

M-Mode

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3
Q

Which axis in M-Mode represents time?

A

horizontal

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4
Q

Which axis in M-Mode represents depth?

A

vertical

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5
Q

When is M-Mode most accurate?

A

when perpendicular

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6
Q

What levels do you obtain measurements in M-Mode?

A
  1. aortic
  2. MV
  3. LV
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7
Q

What is a normal aortic root measurement?

A

2-3.7cm

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8
Q

What is a normal aortic valve measurement?

A

1.5-2.6cm

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9
Q

What is a normal LA measurement?

A

1.9-4cm

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10
Q

What measurements are you getting at the aortic level?

A

aortic root, aortic valve, LA

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11
Q

What are the points at the MV level?

A

DEFABC

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12
Q

Which point is ventricular systole over and the MV opens?

A

D

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13
Q

Which point is the LV rapidly filling?

A

E

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14
Q

Which point does the MV start to close?

A

F

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15
Q

Which point does atrial systole (kick) occur and MV opens?

A

A

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16
Q

Which point does the MV close and ventricular systole occur?

A

C

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17
Q

What measurements are taken in LV diastolic level?

A

IVS, LV, LV posterior wall

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18
Q

What is a normal measurement for IVSd??

A

0.6-1.1cm

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19
Q

What is a normal measurement for LV diastolic?

A

3.7-5.6cm

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20
Q

What is a normal measurement for LVPW?

A

0.6-1.1cm

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21
Q

What is a normal measurement for LV systolic?

A

2-3.8cm

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22
Q

What is the normal ejection fraction range?

A

65% +/- 12

23
Q

What measures speed and direction of blood flow through chambers and valves?

A

spectral doppler

24
Q

When is the doppler signal the best?

A

when the blood flow is parallel to doppler beam

25
Q

What is the angle for cardiac doppler?

A

0

26
Q

What collects velocity info from a specific area?

A

pulsed wave doppler

27
Q

What detects only low velocity flow?

A

PW doppler

28
Q

What causes the doppler signal to wrap around the baseline and flow appears to be moving in the opposite direction?

A

aliasing

29
Q

What detects all velocities along cursor?

A

CW doppler

30
Q

What is an advantage of CW doppler?

A

can detect low and high velocity

31
Q

What is the name of the blind, pencil probe used to evaluate probe?

A

Pedoff probe

32
Q

What are the best views to do doppler with?

A

PSAX, Apical 4/5

33
Q

What is the color towards the transducer?

A

red

34
Q

What is the color away from the transducer?

A

blue

35
Q

What does BART mean?

A

blue away, red towards

36
Q

What can be found using doppler in echo?

A

regurg/leakage in valve, evaluate stenosis

37
Q

What view is best for MV?

A

apical 4

38
Q

What is normal velocity for MV?

A

0.6-1.3m/s

39
Q

What is the waveform for MV?

A

biphasic, E wave (larger) and A wave

40
Q

What view is best for TV?

A

apical or PSAX

41
Q

What is normal velocity for TV?

A

0.3-0.7m/s

42
Q

What view is best for AoV?

A

apical 5

43
Q

What doppler is used for AoV?

A

CW

44
Q

What is normal velocity for AoV?

A

1-1.7m/s

45
Q

What view is best for LVOT?

A

apical 5

46
Q

What doppler is used for LVOT?

A

PW doppler

47
Q

What is normal velocity for LVOT?

A

1-1.7m/s

48
Q

What view is best for PV?

A

PSAX at base level

49
Q

What is normal velocity for PV?

A

0.6-0.9m/s

50
Q

What is mostly evaluated by acceleration time?

A

PV

51
Q

What is normal acceleration time for PV?

A

130m/s

52
Q

Is ascending aorta doppler above or below baseline?

A

above

53
Q

Is descending aorta doppler above or below baseline?

A

below

Echo (4 decks)

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