ECG&IABP Flashcards

(30 cards)

1
Q

ECG changes expected for an anterior MI.

Location of infarct?

A

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

LAD

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2
Q

What is a septal MI?

A

Subtype of anterior MI with greatest elevation in V1-V2

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3
Q

What is an anterioseptal MI.

A

Subtype of anterior MI with greatest elevation in V1-V4

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4
Q

What is an anteriolateral MI.

A

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

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5
Q

ECG changes expected for an inferior MI.

Location of infarct?

A

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

RCA/LCx

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6
Q

ECG changes expected for an posterior MI.

Location of infarct?

A

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

Distal RCA or LCx

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7
Q

Describe Wellens’ Syndrome

A
  • Deep T wave inversions or biphasic T waves in V2-V3
  • Occurs when pain-free (after nitro)
  • STEMI Equivalent - LAD Occlusion
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8
Q

Describe De Winter’s T Waves

A
  • Upsloping ST depression with symmetrically peaked T waves in V4
  • STEMI Equivalent - LAD Occlusion
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9
Q

In inferior STEMI, RCA occlusion is suggested by

A

STE III > II
STD I
STE V4R

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10
Q

In inferior STEMI, LCx occlusion is suggested by

A

STE II > III
No STD I
STE V5-V6

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11
Q

ECG changes expected for an lateral MI.

Location of infarct?

A

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

LAD/LCx

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12
Q

ST Elevation in aVR and V1 may suggest

A

Left Main Occlusion (LMCA)
Triple Vessel Disease
Proximal LAD

Possible STEMI Equivalent

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13
Q

What artery supplies the inferior portion of the heart?

A

Right Coronary Artery (RCA)

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14
Q

Leads V1-V6 are called

A

Precordial Leads

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15
Q

ST Elevation is measured at the

A

J-point

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16
Q

ST Elevation indicates

A

Infarction (death of tissue)

17
Q

Hyperkalemia causes what ECG changes?

A

Peaked T-waves

Sinusoidal Pattern

18
Q

WPW causes what ECG changes?

19
Q

ST depression can indicate

A

Ischemia, digitalis toxicity, old injury

20
Q

Q waves seen with ST elevation may indicate

A

Old infarction

21
Q

In what sequence does blood flow through the heart valves?

A

Tricuspid
Pulmonic
Mitral
Aortic

22
Q

Hypokalemia may cause what ECG changes?

A

Peaked P waves
Flat T waves
U waves

23
Q

A tricyclic antidepressant overdose may cause what ECG changes?

A

Prolonged QT

SR’ pattern in aVR (R > 3mm or S/R > 0.7)

24
Q

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

A

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.