EKG Interpretations
Which condition may show sawtooth waves on an ECG?
A. Ventricular tachycardia
B. Atrial flutter
C. Asystole
D. Sinus block
B. Atrial flutter
Hallmark of first-degree AV block?
A. Missing QRS complex
B. PR interval > 0.20 seconds
C. Wide QRS
D. Irregular rhythm
B. PR interval > 0.20 seconds
How would you recognize second-degree AV block type II?
Dropped QRS complex with constant prolonged PR intervals
What forms on an ECG strip when the upper chamber of the heart is paced?
Atrial pacemaker spike
Atrial Fibrillation is characterized by:
A. Regular R-R Intervals
B. No visible P waves and irregular rhythm
C. Wide QRS Complexes
D. Inverted T waves
B. No visible P waves and irregular rhythm
A rhythm strip shows 3 P waves for every QRS. What is likely?
A. Atrial fibrillation
B. 3rd degree AV block
C. Sinus tachycardia
D. Normal sinus rhythm
B. 3rd degree AV block
What is the hallmark of atrial flutter?
"Sawtooth" flutter wave pattern
What shows up on an ECG strip when the lower chambers of the heart are paced?
Ventricular pacemaker spike
Which rhythm shows grouped beating and dropped QRS complexes?
A. Atrial flutter
B. Wenckebach (Mobitz I)
C. Sinus arrythmia
D. Junctional escape rhythm
B. Wenckebach (Mobitz I)
3rd-degree AV block shows
A. Normal sinus P waves and QRS together
B. Complete dissociation between atria and ventricles
C. PR intervals that lengthen then drop
D. Narrow QRS with inverted T waves
B. Complete dissociation between atria and ventricles
What is the defining characteristic of 3rd degree AV block?
P waves and QRS complexes are independent
How long does a pacemaker last/battery life?
About 10-12 years, depending on the patient
A heart rhythm with no P waves, irregular spacing, and a chaotic baseline is most likely...
Atrial fibrillation
Irregular rhythm with grouped beating and progressively longer PR intervals is:
A. Sinus arrest
B. Mobitz I
C. Mobitz II
D. 3rd-degree AV block
B. Mobitz I
What condition is indicated by a sawtooth pattern on the tracing?
Atrial flutter
Can you exercise with a pacemaker?
Yes! Exercise will benefit your heart
Atrial fibrillation increases risk for:
A. MI (Myocardial Infarction)
B. Stroke
C. Pericarditis
D. Heart murmurs
B. Stroke
In atrial flutter, the atrial rate is often around:
A. 60 bpm
B. 100 bpm
C. 150 bpm
D. 250-350 bpm
D. 250-350 bpm
Which condition is best described as a regular rhythm with a P wave, followed by a dropped QRS complex?
Second-degree AV block type I (Mobitz I)
What type of pacemaker would we use for a 3rd-degree AV block?
Dual-chamber pacemaker