Arrythmia ECG Descriptions

Question 1

Normal Sinus Rhythm

Answer 1

Regular rhythm, P waves before each QRS

Question 2

Sinus Bradycardia

Answer 2

Regular rhythm, P before QRS just slower

Question 3

Sinus Tachycardia

Answer 3

Regular Rhythm, P before each QRS just faster

Question 4

Sinus Pause/Sinus Arrest

Answer 4

Sudden pause with absence of P-QRS-T, underlying rhythm resumes after pause

Question 5

Atrial Tachycardia

Answer 5

Rapid rhythm with abnormal P waves, regular QRS

Question 6

Atrial Flutter

Answer 6

Sawtooth flutter waves

Question 7

Atrial Fibrillation

Answer 7

Irregular rhythm, no distinct p waves, chaotic baseline

Question 8

Junctional Rhythm

Answer 8

Absent, inverted, or retrograde P waves, regular narrow QRS

Question 9

First-Degree AV Block

Answer 9

PR interval more than 20 seconds but consistent, every P followed by QRS

Question 10

Second-Degree AV Block (Type 1)

Answer 10

Progressive PR lengthening until a QRS is dropped

Question 11

Second-Degree AV Block - Type II

Answer 11

PR interval constant, then a dropped QRS, unpredictable dropped beats

Question 12

Third-degree AV block (Complete Heart Block)

Answer 12

No relationship between the P waves and QRS complex

Question 13

Bundle Branch Block

Answer 13

Hitch in the QRS complex

Question 14

Ventricular Tachycardia

Answer 14

Wide QRS complexes, regular rhythm, and no visible P waves

Question 15

Ventricular Fibrillation

Answer 15

Chaotic, no identifiable P, QRS, or T waves