ID 108 – 58 year old man in the emergency department

ID 108 – 58 year old man in the emergency department

Can you see P waves?

Yes: there are regular P waves, that originate from the sinus node (rate 88/min)Are the P waves followed by QRS complexes?

ID 108 – 58 year old man in the emergency department - Sinus rhythm, 88/min.

Yes, however, there is 2nd degree AV block: 2 P waves are conducted with progressive PR prolongation and the third P wave is blocked (Mobitz 1 second degree AV block ) Ventricular rate 59/min.

ID 108 Sinus rhythm with 2nd degree AV block (Mobitz 1) Ventricular rate 59/min

ID 108 – Sinus rhythm with 2nd degree AV block (Mobitz 1) – Ventricular rate 59/min.

Following diagnostic steps: - QRS axis is normal – The QRS duration is normal (no BBB ornonspecific block) - No right or left ventricular hypertrophy – No QRS signs of infarction-Normal ST segment and T waves

ID 108 Final diagnosis: - Sinus rhythm with Mobitz 1 second degree AV block (3:2 AV conduction) Ventricular rate 58/min. No other abnormalities