The cardiac conduction system explained clearly and simply. Purchase PDF (this video script images) here: Purchase a license to download a non-watermarked copy of this video here: Please NOTE: this video talks about PQ segment, not PR interval, and this is NOT a mistake. You may have seen more of PR interval in text books, because it is used for ECG interpretation. But you should be able to find PQ segment too. These are 2 different things. The PR interval measures from the start of P wave. So PR interval = P wave PQ segment. To understand ECG, we intentionally use PQ segment as it represents one single event, easier to understand. The PR inter
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