EKG Interpretation Practice Flashcards
What type of rhythm is this?

Supraventricular tachycardia
What type of rhythm is this?

Sinus bradycardia
What are some characteristics of supraventricular dysrhythmias?
- No clearly identifiable P wave, may be hidden in T or R waves
- Normal QRS
- Tachycardia

What is the normal rate of the SA node?
60-100 bpm
What type of rhythm is this?

Premature ventricular contraction
What type of rhythm is this?

Ventricular fibrillation
What type of rhythm is this?

Second Degree Heart Block, Type 1 (Wenckebach)

What type of rhythm is this?

Torsades de pointes
What does the T-wave represent?

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
What type of rhythm is this?

Pulseless electrical activity
What type of rhythm is this?

Atrial flutter
What is the normal rate of the ventricles?
20-40 bpm
What type of rhythm is this?

Second Degree Heart Block, Type 1 (Wenckebach)

What type of rhythm is this?

3rd degree heart block

What type of rhythm is this?

Atrial Fibrillation
What type of rhythm is this?

Ventricular tachycardia
What causes a prolonged QTc?

- 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)
What type of rhythm is this?

Sinus bradycardia
What causes pathologic Q-waves?

- Myocardial Infarction
- Hypertrophic Cardiomyopathy
- Incorrect 12 lead placement
What type of rhythm is this?

1st degree heartblock
What are some charactersitics of atrial dysrhythmias?
- Abnormal P waves
- More P waves than QRS’s
- Atrial rates are faster than Ventricular rates
- Normal QRS

What are some characteristics of a normal Q-wave?
- Narrow
- Duration
- 25% the amplitude of the R-wave
- Normally appear in Leads I, aVL, V5, V6

What are some characteristics of pathologic Q-waves?
- Prolonged duration > 0.20 sec (1 mm)
- > 2 mm deep (2 large blocks)
- > Depth 25% - 33% of QRS amplitude























