Question

identify this rhythm

question 1 of 25

junctional rhythm
sinus bradycardia
sinus rhythm with a 2nd degree block
normal sinus

Explanation:

Analyze the P waves and QRS complexes

• Regular P-P intervals are present across the strip.
• Some P waves are followed by a QRS complex, while others are blocked (non-conducted), leaving a P wave with no subsequent QRS complex.

Evaluate the PR intervals

• The PR intervals of conducted beats remain constant.
• The sudden failure of conduction (blocked P wave) without progressive PR prolongation is characteristic of a second-degree AV block (specifically Mobitz Type II).

Match with the given options

• The presence of a underlying sinus rhythm with non-conducted P waves matches "Sinus Rhythm with a 2nd degree block".

Answer:

• Junctional Rhythm
• Sinus Bradycardia
• Sinus Rhythm with a 2nd degree block (Correct answer)
• Normal Sinus