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Flashcards in ECG&IABP Deck (30)
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1

ECG changes expected for an anterior MI.
Location of infarct?

Elevation V2-V5
Possible elevation I, aVL, V1, V6
Depression III, aVF

LAD

2

What is a septal MI?

Subtype of anterior MI with greatest elevation in V1-V2

3

What is an anterioseptal MI.

Subtype of anterior MI with greatest elevation in V1-V4

4

What is an anteriolateral MI.

Subtype of anterior MI with greatest elevation in V3-V6, plus I, aVL

5

ECG changes expected for an inferior MI.
Location of infarct?

Elevation II, III, aVF
Depression I, aVL, V5-V6

RCA/LCx

6

ECG changes expected for an posterior MI.
Location of infarct?

(Horizontal) Depression V1-V3
Broad R wave
Upright T Wave

Distal RCA or LCx

7

Describe Wellens' Syndrome

- Deep T wave inversions or biphasic T waves in V2-V3
- Occurs when pain-free (after nitro)
- STEMI Equivalent - LAD Occlusion

8

Describe De Winter's T Waves

- Upsloping ST depression with symmetrically peaked T waves in V4
- STEMI Equivalent - LAD Occlusion

9

In inferior STEMI, RCA occlusion is suggested by

STE III > II
STD I
STE V4R

10

In inferior STEMI, LCx occlusion is suggested by

STE II > III
No STD I
STE V5-V6

11

ECG changes expected for an lateral MI.
Location of infarct?

Elevation I, aVL, V5-V6
Depression III, aVF

LAD/LCx

12

ST Elevation in aVR and V1 may suggest

Left Main Occlusion (LMCA)
Triple Vessel Disease
Proximal LAD

Possible STEMI Equivalent

13

What artery supplies the inferior portion of the heart?

Right Coronary Artery (RCA)

14

Leads V1-V6 are called

Precordial Leads

15

ST Elevation is measured at the

J-point

16

ST Elevation indicates

Infarction (death of tissue)

17

Hyperkalemia causes what ECG changes?

Peaked T-waves
Sinusoidal Pattern

18

WPW causes what ECG changes?

Delta Wave

19

ST depression can indicate

Ischemia, digitalis toxicity, old injury

20

Q waves seen with ST elevation may indicate

Old infarction

21

In what sequence does blood flow through the heart valves?

Tricuspid
Pulmonic
Mitral
Aortic

22

Hypokalemia may cause what ECG changes?

Peaked P waves
Flat T waves
U waves

23

A tricyclic antidepressant overdose may cause what ECG changes?

Prolonged QT
SR' pattern in aVR (R > 3mm or S/R > 0.7)

24

The IABP purging during ascent is a result of which gas law?

Boyle's (volume/pressure)

25

If the IABP becomes dislodged, you may see what two physiologic changes?

Loss of left radial pulse
Poor urine output

26

Rust color flakes in IABP tubing indicates what?

Balloon rupture

27

The primary trigger for most IABP operations is what?

ECG

28

IABP inflation is synchronized with what?

Dichrotic notch

29

The most harmful IABP timing errors are

Early inflation, Late deflation

30

If the IABP fails during transport, you must do what?

Manually inflate balloon at least every 30 minutes.