70yo male, admitted to the EP lab for PVC ablation. Sorry pi | Figure 1

70yo male, admitted to the EP lab for PVC ablation. Sorry picture of baseline ECG, baseline was sinus with relatively frequent right sided PVCs. The above happened during pace mapping. After watching/waiting for spontaneous AV node recovery for one hour, pt. won himself a temporary pacemaker.

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Baseline EKG in same pt, intermittent near syncopal episodes.

I racked my brain trying to analyze this rhythm. Only patient info I know is that he has heart failure. His ICU RN simply stated this is sinus brady with bigeminal PVCs, but it looks more complex than that to me. Perhaps a 2:1 Mobitz Type 2? If the first "notch" of the t wave is indeed a p wave, then they all march out.

74 y/o male admitted with exac. COPD and hypoxia. Not sure what to make of it. I want to call it SB with LBBB but was is with the complexes with a different axis? PACs? PVCs? R-R is irregular at times too. Anyone have an idea?

85 year­old patient, female, DM type2 (HbA1c 7,3%), labile mild hypertension, paroxysmal atrial fibrillation. She woke up in the morning with palpitations and her pulse was irregular. ECG n.1 actually shows an atrial fibrillation. After this, she received 600mg of propafenone. After 1h and 30m ECG n.2 and 3 were recorded: some QRS look like PVCs. ECG n.4 was recorder after 4 hours. ECG n.5 was recorded later in the evening. What are those large and high voltage QRS? Why did they appear after the propafenone? Are they PVCs? Is it a synus rhythm?

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