Ecg Chp 11 To 13

Front 1

In a RBBB, what are you looking for?

Back 1

RSR’ in V1; Slurred S in Lead I and V6

Front 2

What is a floppy eared bunny?

Back 2

qRR’ MI + BBB

Front 3

In a LBBB, what are you looking for?

Back 3

V1 has a broad monomorphic S; I and V6 have broad monomorphic R

Front 4

What is the structural different between the LAF and the LPF?

Back 4

LAF is a single cord of fibers; LPF is a fan like structure

Front 5

LAH has what diagnostic criteria?

Back 5

Left axis deviation; Lead I: qR or large R; Lead III: rS complex

Front 6

Diagnostic criteria of a LPH?

Back 6

Right Axis deviation; Large S in lead I; Small q in lead III

Front 7

What is P-mitrale?

Back 7

Severe left atrial enlargement

Front 8

Diagnostic criteria of P-mitrale?

Back 8

P wave greater than .12 seconds in Leads I and II and notched (M shaped)

Front 9

Diagnostic criteria of RAE?

Back 9

Peaked P wave >2.5 mm

Front 10

Biphasic P waves are evidence of?

Back 10

Intraatrial conduction delay

Front 11

What biphasic P wave is associated with LAE?

Back 11

Larger second half

Front 12

What biphasic P wave is associated with RAE?

Back 12

First half of V1 is taller than the second half of V6

Front 13

What are the 5 criteria for LVH?

Back 13

S of V1 or 2 + R of V5 or 6 >35 mm; Any precordial lead >45; The R of aVL is >11; The R of Lead I is >12; The R of lead aVF is >20

Front 14

What is the main criteria for RVH?

Back 14

R>S in V1 and V2

Front 15

Diagnostic criteria of LVH with strain?

Back 15

V1-3: ST elevation, upward concavity, T wave is upright and asymmetric; V4-6: ST depression, concave down, T wave is inverted and asymmetric

Front 16

Where is the strain pattern greatest?

Back 16

In the lead with the tallest and deepest QRS

Front 17

What is the main difference seen in ischemia and not in strain?

Back 17

ST is flat and T wave is symmetrical

Front 18

Diagnostic criteria for RVH with strain?

Back 18

Increased R:S ratio; Concave down; ST depression; Inverted T wave

Front 19

What is the tissue charge in ischemia? Causing what ST?

Back 19

Negative, ST depression

Front 20

What is the shape of the wedge in ischemia? Why?

Back 20

Larger in the epicardium, due to collateral supply in the endocardium

Front 21

What is the tissue charge in injury? Causing what ST?

Back 21

Positive, ST elevation

Front 22

What is the T wave in ischemia, injury, and ischemia?

Back 22

Inverted T wave in all

Front 23

What is the tissue charge in Infarction?

Back 23

Neutral

Front 24

What is the shape of the wedge in infarction?

Back 24

Wider in the endocardium

Front 25

What is the Q wave?

Back 25

Caused by the dead tissue (neutral) with all the electrical forces headed away

Front 26

What are the 2 classifications of infarcts?

Back 26

Q wave and Non-Q wave

Front 27

What type of infarct has a higher long-term mortality if aggressive treatment isn’t taken?

Back 27

Non-Q wave

Front 28

What are the 3 implications in Q wave infarcts?

Back 28

Higher acute mortality, increased tissue damage and development of CHF

Front 29

In progression of an infarct, what is always the first ECG change?

Back 29

T wave inversion

Front 30

In a chronic infarct, what is the only ECG sign?

Back 30

Q wave

Front 31

Anterior wall infarcts are shown in what leads?

Back 31

V3 and V4

Front 32

Inferior wall infarcts are shown in what leads?

Back 32

II, III, and aVF

Front 33

Reciprocal changes of inferior wall infarcts are shown in what leads?

Back 33

I and aVL

Front 34

Lateral wall infarcts are shown in what leads?

Back 34

I, aVL, V5 and V6

Front 35

Reciprocal changes of lateral wall infarcts are shown in what leads?

Back 35

II, III, and aVF

Front 36

Septal wall infarcts are shown in what leads?

Back 36

V1 and V2

Front 37

Reciprocal changes of septal wall infarcts are shown in what leads?

Back 37

V7-9 (posterior leads)

Front 38

Blood supply obstruction in an inferior MI?

Back 38

RCA, LCx

Front 39

Blood supply obstruction in an inferior-RV MI?

Back 39

Proximal RCA

Front 40

Blood supply obstruction in an inferoposterior MI?

Back 40

RCA, LCx

Front 41

Blood supply obstruction in an isolated RV MI?

Back 41

LCx

Front 42

Blood supply obstruction in an isolated posterior MI?

Back 42

RCA, LCx

Front 43

Blood supply obstruction in an anterior MI?

Back 43

LAD

Front 44

Blood supply obstruction in an anteroseptal MI?

Back 44

LAD

Front 45

Blood supply obstruction in an anteroseptal-lateral MI?

Back 45

Proximal LAD

Front 46

Blood supply obstruction in an anterolateral, inferolateral, or posterolateral MI?

Back 46

LCx

Front 47

What is the change of having an arrhythmia leading to sudden cardiac death in an AMI?

Back 47

40%

Front 48

What infarct area does not show reciprocal change?

Back 48

Anterior

Front 49

What is one of the first signs of an inferior infarct?

Back 49

Downward sloping ST