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High Acuity Hesi > EKG Practice > Flashcards

EKG Practice Flashcards

1
Q

What type of rhythm is this?

A

Supraventricular tachycardia

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2
Q

What is the normal rate of the SA node?

A

60-100 bpm

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3
Q

What type of rhythm is this?

A

Sinus bradycardia

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4
Q

What are some characteristics of supraventricular dysrhythmias?

A
  • No clearly identifiable P wave, may be hidden in T or R waves
  • Normal QRS
  • Tachycardia
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5
Q

What type of rhythm is this?

A

Premature ventricular contraction

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6
Q

What type of rhythm is this?

A

Ventricular fibrillation

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7
Q

What does the T-wave represent?

A

Represents the return to the resting state (repolarization) of the ventricles. It normally starts at the isoelectric line, rises gradually & then returns to the isoelectric line

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8
Q

What type of rhythm is this?

A

Torsades de pointes

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9
Q

What type of rhythm is this?

A

Second Degree Heart Block, Type 1 (Wenckebach)

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10
Q

What type of rhythm is this?

A

Pulseless electrical activity

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11
Q

What is the normal rate of the ventricles?

A

20-40 bpm

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12
Q

What type of rhythm is this?

A

Atrial flutter

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13
Q

What type of rhythm is this?

A

Second Degree Heart Block, Type 1 (Wenckebach)

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15
Q

What type of rhythm is this?

A

3rd degree heart block

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16
Q

What type of rhythm is this?

A

Atrial Fibrillation

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17
Q

What type of rhythm is this?

A

Second Degree Heart Block, Type 2 (Mobitz, type 2)
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18
Q

What type of rhythm is this?

A

Ventricular tachycardia

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19
Q

What causes a prolonged QTc?

A
  • CAD, Cardiomyopathy
  • Severe Bradycardia, High-Grade AV Block
  • Anti-Arrhythmics (Type III- K+ blockers, Amiodarone)
  • Psychotropic Meds - SSRIs, Lithium, Mellaril, Haldol
  • HypoCalcemia, HypoKal-emia (Diuretics, Emesis, Diarrhea)
  • Prolonged QT Syndrome (inherited)
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20
Q

What type of rhythm is this?

A

Sinus bradycardia

21
Q

What causes pathologic Q-waves?

A
  • Myocardial Infarction
  • Hypertrophic Cardiomyopathy
  • Incorrect 12 lead placement
22
Q

What type of rhythm is this?

A

1st degree heartblock

23
Q

What are some charactersitics of atrial dysrhythmias?

A
  • Abnormal P waves
  • More P waves than QRS’s
  • Atrial rates are faster than Ventricular rates
  • Normal QRS
24
Q

What are some characteristics of a normal Q-wave?

A
  • Narrow
  • Duration
  • 25% the amplitude of the R-wave
  • Normally appear in Leads I, aVL, V5, V6
25
Q

What are some characteristics of pathologic Q-waves?

A
  • Prolonged duration > 0.20 sec (1 mm)
  • > 2 mm deep (2 large blocks)
  • > Depth 25% - 33% of QRS amplitude
26
Q

What type of rhythm is this?

A

Ventricular tachycardia

27
Q

What type of rhythm is this?

A

Torsades de pointes

28
Q

What type of rhythm is this?

A

1st degree heartblock

29
Q

What does the QT-interval reprsent?

A

Represents time between onset of ventricular depolarization & the end of ventricular repolarization, Normal QT Interval= Usually < 0.40 seconds depending on HR

30
Q

What does the p-wave represent in the qrs complex?

A

atrial depolarization

31
Q

What type of rhythm is this?

A

Atrial flutter

32
Q

What does the ST segment represent?

A

represents the time between ventricular depolarization & repolarization of the ventricles; normally isoelectric

33
Q

In what order does an electrical impulse travel down the cardiac conduction system?

A
  1. SA node
  2. AV node
  3. Bundle of His
  4. Intervenricular septum
  5. Purkinje fibers
34
Q

What does the QRS complex represent?

A

It represents spread of the electrical impulse through both ventricles.

35
Q

What type of rhythm is this?

A

Second Degree Heart Block, Type 2 (Mobitz, type 2)

36
Q

What type of rhythm is this?

A

Sinus tachycardia

37
Q

What type of rhythm is this?

A

Sinus tachycardia

38
Q

What can a QTc > 0.50 seconds lead to?

A

Can lead to fatal ventricular dysrhythmias- V-Tachy, VFib, and Torsades De Pointes

39
Q

What type of rhythm is this?

A

Premature ventricular contraction

40
Q

What type of rhythm is this?

A

3rd degree heart block

41
Q

What type of rhythm is this?

A

Pulseless electrical activity

42
Q

What is the normal rate of the AV node?

A

40-60 bpm

43
Q

What does the q-wave represent in the QRS complex?

A

It is the 1st negative deflection in the qQRS complex

44
Q

What type of rhythm is this?

A

Ventricular fibrillation

45
Q

What type of rhythm is this?

A

Supraventricular tachycardia

46
Q

What type of rhythm is this?

A

Atrial Fibrillation

47
Q

IWhat does the PR interval represent?

A

Represents time of cardiac depolarization from SA node to AV node

48
Q

What does a U-wave represent?

A

Represents repolarization of the His-Purkinje fibers P (seen in hypokalemia)

High Acuity Hesi (7 decks)

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