PLAX 2D Anatomy and Protocol Flashcards

1
Q

PLAX sides of screen

A

anterior
inferolateral (Lt hip), superomedial (Rt shoulder)
posterior

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2
Q

PLAX arm position is LLD

A

drop right shoulder back to open up intercostal spaces

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3
Q

PLAX marker pointed towards

A

patients rt shoulder

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4
Q

PLAX 2D increased depth should have depth/focus where

A

15-25 cm
heart should take up about 1/2 the depth

focus=mid

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5
Q

what are you looking for on PLAX 2D increased depth

A

pericardial/pleural effusions
pericardial mass

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6
Q

PLAX 2D depth

A

just behind DA

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7
Q

PLAX 2D should have what structures clear

A

LV/RV endocardium, LA, MV, AV, AO, aortic sinus

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8
Q

LV walls should be _____ in PLAX 2D

A

perpendicular

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9
Q

PLAX 2D end-systolic measurement taken when

A

end of T wave
just after AV closes and LV chamber is smallest

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10
Q

PLAX 2D Mmts (ED)

A

IVSd
LVIDd
LVPWd (post wall)

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11
Q

normal IVSd/LVPWd

A

men: ≤10mm
women: ≤9mm

total ≤11mm

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12
Q

Normal LVIDd

A

men: ≤58mm
women: ≤52mm

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13
Q

PLAX 2D Mmts (ES)

A

LVIDs
LAs

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14
Q

normal LAs

A

men: ≤40mm
women: ≤38mm

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15
Q

to see more of asc aorta in PLAX 2D, we must ___

A

slide superiorly, tilt medially

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16
Q

aortic root anatomy Mmts

A

aortic annulus
sinus of Valsalva
Sino-tubular junction
Ascending aorta

(we only do 2/4)

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17
Q

when do we switch from inner to inner to LE-LE for aortic Mmts

A

after the AV

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18
Q

PLAX Asc Ao is measure ___ from ___ and is taken during

A

2cm
ST junction
end-diastole

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19
Q

PLAX sinus of Valsalva measure during

A

end-diastole

20
Q

normal asc ao

21
Q

normal S of V

22
Q

PLAX 2D AV Zoom should include

A

LVOT
both AV cusps (during S+D)
some ao
some LA

23
Q

PLAX LVOT measured during and where

A

mid-systole (after AV opens fully)

just before AV annulus

24
Q

PLAX LVOT usually needs us to ____

A

decrease gains

25
Normal LVOT
18-22mm (avg.=20mm)
26
PLAX 2D MV zoom image should show
Both MV leaflet tips most of LA part of basal IVS
27
From PLAX, angle _____ to get to RT inflow (TV) View
towards right hip
28
if struggling to get RT Inflow (TV) View what should you do
slide laterally (or go one rib space lower), then angle medially
29
From PLAX, angle _____ to get to PV View (RVOT)
towards patients LT shoulder
30
what way should you slide in PV View (RVOT) if too much lung present
medially
31
PV (RVOT) view focus is the
PV or MPA
32
PLAX Mmts tell us about _____ and shape of the ___
LV systolic function LV
33
fractional shortening (what/equation)
linear calculation that gives info about the systolic function of the heart FS= )(LVIDd -LVIDs)/LVIDd)x100
34
Ejection fraction - linear
measurement used to asses systolic function by calculating the % of blood exiting the heart with each contraction
35
EF is reasonably accurate if there are no ____/___
wall abnormalities callipers properly placed
36
assumptions of EF estimation (3)
1. ventricle is a prolapse ellipse shape 2. long axis is twice the short axis 3. symmetric contracility
37
normal Teichholz EF
≥ 55%
38
Linear EF formula
same as fractional shortening but each value is cubed and mm becomes cm (LVIDd-LVIDs)/LVIDd x 100 (but cube each measurement)
39
LV mass formula
epicardial volume - endocardial volume = myocardial volume
40
LV mass index formula and normal values
LV mass/BSA men ≤ 115g/m^2 women ≤ 95g/m^2
41
relative wall thickness formula and normal
RWT = (2 x LVPWd)/LVIDd 0.22-0.42
42
natural geometry
normal LV mass index and RWT
43
concentric remodelling
normal LV mass index but increased RWT
44
concentric hypertrophy
increased LV mass index and RWT
45
eccentric geometry
increased LV mass index and normal RWT