Hemodynamics #1 Flashcards Preview

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Flashcards in Hemodynamics #1 Deck (15):
0

LAD supplies

LV anterior wall
LV anterior 2/3 of septum
-RBB, L Anterior fascicles of LBB
Papillary muscle

1

LCX Cercumflex feeds

Lateral wall
L-Dominant: posterior wall / AV node (10%)

2

RCA => PDA (as it comes around of back) supplies?

-SA node (SA nodal artery)
-RV
-AV node (marginal artery)
-LV posterior wall
-LV inferior wall

3

L posterior fascicles of LBB has three supplies:

1 from LAD
2 from RCA

4

Hemiblock

Left anterior fascicular block
More common that posterior block
Characterized by L axis deviation

5

RBB

S-wave: I, V5, V6
Qrs duration > 0.12

6

LBB

S-Wave: V1, V2 (negative)
R-Wave: V5, V6 (positive)
QRS >0.12
-paradoxical splitting of S2 (split on expiration, not inspiration)

7

Coronary perfusion Pressure calculation

CPP= arterial diastolic pressure - wedge pressure

8

ST depression/elevation, T-wave inversion, Q-wave

ST depression: subendocardial injury
ST elevation: transmural injury
T-wave inversion: early injury
Q-wave: infarcted tissue

9

L Main Occlusion

Lateral, anterioseptal AMI

10

Q-Wave characteristics

Small Q wave normal in lateral leads

Path:
Duration > 0.04 (1 small box)
1/3 amplitude if QRS

11

Posterior wall MI reciprocal change & V-leads/placement

Reciprocal: V1, V2, V3, V4

V7: posterior auxiliary line
V8: mid-scapular
V9: Peri-Spinal

12

12-lead heart sections

Inferior: II, III, aVF
Septal: V1, V2
Anterior: V3, V4
Lateral: I, aVL, V5, V6
RV: V1R -V6R

13

Typical Reciprocal change w/ anterior lateral AMI

II, III, aVF

14

Typical Reciprocal change w/ inferior & posterior

Inferior: V1, V2, V3 or I, aVL
Posterior: V1, V2