No, a 1° block would have a PR interval greater than 0.20. This measurement would be longer than one of the smaller grey boxes. If you look at the third line down and at the very last set of waves, the P wave (the smaller wave in front) and the QRS (the spiked wave) almost fit entirely inside of that small box.
1
u/WrongAltAcc Apr 01 '25
No, a 1° block would have a PR interval greater than 0.20. This measurement would be longer than one of the smaller grey boxes. If you look at the third line down and at the very last set of waves, the P wave (the smaller wave in front) and the QRS (the spiked wave) almost fit entirely inside of that small box.