of the QRS complex is between 0.08 and 0.10 seconds — that is, 80 and 100 milliseconds. When the duration is between 0.10 and 0.12 seconds, it is intermediate or slightly prolonged. A QRS ...
If the PR interval of the conducted beat is prolonged and the QRS complex is narrow, then it is most likely second-degree type I AV nodal block (Wenckebach). Alternatively, if the PR interval is ...
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