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DPT732: MAP II > MAPIISG1 - EKG > Flashcards

MAPIISG1 - EKG Flashcards

1
Q

What is the SA node bmp?

A

60-100 bpm

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2
Q

What is the AV node bpm?

A

40-60 bpm

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3
Q

What is the Purkinje Fibers bpm?

A

20-40 bpm

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4
Q

What are the limb leads and their corresponding placement?

A

I, II, III limb and trunk

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5
Q

What are Augmented limb leads:

A

aVR, aVL, aVF: average of limb leads

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6
Q

Where does Precordial V1 lead go?

A

right 4th intercostal space

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7
Q

Where does Precordial V2 lead go?

A

left 4th intercostal space

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8
Q

Where does Precordial V3 lead go?

A

midway between V2 and V4

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9
Q

Where does Precordial V4 lead go?

A

mid-clavicular line, 5th intercostal space

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10
Q

Where does Precordial V5 lead go?

A

anterior axillary line @ level of V4

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11
Q

Where does Precordial V6 lead go?

A

mid-axillary line @ level of V4

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12
Q

What does 1 box on a paper strip mean?

A

0.04 seconds

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13
Q

What does 5 boxes on a paper strip mean?

A

0.2 seconds

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14
Q

What does the P wave look like and what is happening?

A

atrial depolarization, smooth and rounded

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15
Q

What is the PR Interval?

A

atrial activity up to the point of ventricular depolarization, from beginning of P wave to onset of QRS complex

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16
Q

What is the normal length of a PR interval?

A

0.12 to 0.2 seconds (3-5 boxes)

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17
Q

What does a prolonged PR interval mean?

A

AV block

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18
Q

What does the QRS complex look like and what is happening?

A

ventricular depolarization; narrow, sharply pointed

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19
Q

What is the normal length of a QRS complex?

A

0.08 to 0.12 sec (2-3 boxes) or less

20
Q

What does too wide of a QRS complex mean?

A

BBB

21
Q

What does a Q wave mean?

A

can be patholigic (previous cardiac event if greater than one small box wide or greater than 1/3 of entire QRS amplitude

22
Q

What does the ST segment represent?

A

early ventricular repolarization

23
Q

How should an ST segment be?

A

flat and level with baseline, PR interval

24
Q

What does an elevated ST segment mean? (>1-2 small boxes)

A

STEMI - infarction full blockage

25
Q

What does a depressed ST segment mean? (>1-2 small boxes)

A

NSTEMI - ischemi not full blockage

26
Q

What is happpening during the T wave?

A

ventricular repolarization

27
Q

What are T wave pathology or ischemia?

A

inverted, flat

peaked/ tombstone

28
Q

What is the QT interval?

A

onset of QRS thru end of T wave; absolute and relative refractoy periods
too long - expanded relative refractory period

29
Q

How do you identify heart rate from a six minute strip?

A

count QRS complexes over a 6 second period and multiply by 10

30
Q

Describe Normal EKG and what each part of the EKG represents

A

P Wave: first wave normally upward represents atrial depolarization and contraction

QRS Complex: down, up, down deflection represents ventricular depolarization and contraction (atrial repolarization)

T: upward wave represents ventricular reporlaization

31
Q

Identify time increments represented on an EKG strip

A

Small Box = 0.04 sec

Large Box = 0.2 sec

32
Q

Identify the normal length of time for a cardiac cycle

A

from systole to systole is normally 60-100 bpm, thus 0.6 to 1 sec for normal cardiac cycle

33
Q

Describe accurate electroode and lead placement

A

V1 - 4th intercostal space right of sternum
V2 - 4th intercostal space left of sternum
V3 - between V2 and V4
V4 - 5th intercostal space mid left clavicular line
V5 - level with V4 anterior axillary line
V6 - level with V4/5 mid-axillary line

Right arm and L arm lateral and immediatly below clavicle
Right Leg and Left Leg lateral and below umbilicus

34
Q

What is Regularly Irregular

A

ectopic source although rate of the abnormality is consistent and predictable (atrial flutter)

35
Q

What is Irregularly Irregular

A

usually multiple ectopic sources with no discernible pattern to the rate or rhythm (atrial fibrillation)

36
Q

What does sinus rhythm mean?

A

HR between 60-100 bpm which has normal complex generated by SA node

37
Q

Atrial Ryhtm arrhthmias __

A

are generated by the atria such as afib and aflutter

38
Q

What is a PAC? How does it look on an EKG?

A

Premature Atrial Contraction

-Shorter RR interval

39
Q

What is a PVC? How does it look on an EKG?

A

Premature Ventricular Contraction

  • Shorter RR interval
  • NO P wave (contraction is generated by ventricle not atrium)
  • Bizarre QRS complex
  • Compensatory pause
40
Q

What is Atrial Flutter? How does it look on an EKG?

A

Sawtooth appearance
Regularly Irregular
No P wave (SA node is not pacemaker) so 40-60 bpm

41
Q

What is Atrial Fibrillation? How does it look on an EKG?

A

Irregular and Inconsistent R to R interval (irregularly ireegular
No discernable P wave
May be asymptomatic

42
Q

What is a Ventricular Tachycardia? How does it look on a EKG?

A

3+ PVCs with HR >100bpm
no P wave
Most serious

43
Q

What is a Ventricular Fibrillation?

A

No discernable p, qrs, or T wave
Rapid rate
LETHAL
no perfusion

44
Q

Supraventricular Tachycardia

A

Can be sinus, atrial or junctional in origyn

45
Q

What is meant by “ventricular dysrhythmias”

A

Arryhmias that are generated by the ventricles such as vtach, vfib, vbrady

DPT732: MAP II (14 decks)

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