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EKG Flashcards

0
Q

What are the leads associated with LCX?

A

Lead I and aVL

V5-6

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1
Q

What does it mean if the rate is over 300?

A

It is artifact or non-mammalian.

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2
Q

What leads are associated with RCA?

A

Lead II, III, aVF

V1-3

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3
Q

What does a rate of 200 make you think?

A

Bypass tract

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4
Q

What does a rate of 150 or close to 300 make you think?

A

A fib or a flutter

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5
Q

What does a rate of 160+ make you think?

A

PSVT

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6
Q

At what rate is it probably no longer sinus tachy?

A

140+

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7
Q

What is the rate at which the AV node takes over?

A

50

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8
Q

At what rate do the ventricles take over?

A

40

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9
Q

Why is Lead I my friend?

A

Because all the waves should be positive in this lead and if they aren’t it means an abnormal heart

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10
Q

What is a q wave?

A

A negative force before the R wave

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11
Q

How can you kill someone with pericarditis?

A

By missing it and calling the cath lab. Can cause tamponade

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12
Q

In what lead should all waves be negative?

A

AVR

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13
Q

What should you do if there is isolated ST elevation in aVR?

A

Look for ST depression in other leads because this is an LAD or left main issue

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14
Q

What else should you think of if you see positive waves in aVR?

A

TCA overdose

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15
Q

How long should QT be?

A

No longer than 440 ms (11 boxes)

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16
Q

What are Sgarbossa’s rules for reading a MI in the setting of a bundle branch block?

A
  1. Concordat ST elevation
  2. Discordant ST elevation over 5 mm
  3. Concordat ST depression in V1-V3
17
Q

What does diffuse ST elevation mean?

A

Pericarditis

18
Q

What is first degree AV block?

A

Increased PR interval greater than .2

19
Q

What does an infarct in the widow maker look like?

A

ST elevation in I, aVL, V1-V4

ST depression in II, III, aVL

20
Q

What does a negative R wave with a large hump mean?

A

Ventricular aneurysm

21
Q

How can you kill someone with an ventricular aneurysm?

A

Giving thrombolytics because there could be a clot in the aneurysm

22
Q

What does an inferior wall MI look like?

A

ST elevation in II, III, aVF

ST depression in I, aVL, V5-6

23
Q

What does S1Q3T3 mean?

A

S1- negative deflection in lead 1 which indicates right heart strains
q3- shows a q wave in lead III
T3: means an inverted T wave in lead 3

pulmonary embolism

24
Q

What is a poor prognostic indicator in PE?

A

T wave inversions in v1-3

25
Q

What else might you see in right heart strain?

A

Big R waves

26
Q

What determining axis what is most important?

A

Look at lead I and aVF then lead II - area under the curve is what matters

27
Q

What does an inferoposterior wall MI look like?

A

ST elevations in II, III, aVF, V5-6
ST depression in I, aVL, V1-3
T wave inversion in V1-3

28
Q

What artery is blocked in inferoposterior wall MI?

A

Proximal RCA

29
Q

What are the five treatments of WCT?

A 
Amiodarone
Lidocaine
Mg
Procainamide
Shock
30
Q

What points toward a right atrial abnormality?

A

Big p waves in the inferior leads

Rightward p axis

31
Q

What is unique about type I second degree heart block?

A

Regularly irregular

Increased PR interval and then a dropped beat

32
Q

What should wide QRS make you think of?

A

Heart block

33
Q

How can you tell which side the block is on?

A

The area under the curve in lead I will tell you
Positive= left
Neg= right

34
Q

Wide complex with p’s connected =?

A

BBB

35
Q

What is the first EKG change you see in hyperkalemia?

A

Peaked t waves

36
Q

What is the order of changes in the EKG with hyperkalemia?

A
  1. Peaked t waves
  2. PR prolongation
  3. P wave disappearance
  4. Widened QRS
37
Q

What do you see in hypokalemia?

A
  1. U waves (V4-6)
  2. ST depression
  3. Decreased amplitude of the T wave
  4. QT prolongation (especially less than 3.0)
38
Q

St elevation in I, aVL, V1-V3 with reciprocal changes?

A

Anterolateral infarct (lesion in the LAD)

39
Q

What would right atrial abnormality look like?

A

Inverted p waves

P waves in lead II greater than 2.5 mm

40
Q

What would left atrial abnormality look like

A

P wave width greater than 3 boxes in lead II
Negative deflection in V1 greater than 1 mm and 40 msec
Notched p waves in lead II

41
Q

What is LVH?

A

Amplitude of S in V1 + R in V5 or V6 greater than 35 mm

ER (4 decks)

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