"Sinus Tachycardia with Bundle Branch Block" (Click to go to content) 

• Attribution:

  • Heartstart Skills Frasco https://www.youtube.com/watch?v=Df7c7eppIJs

  • Heartstart Skills Frasco Youtube Channel https://www.youtube.com/channel/UCDG8UqA26LciIovorpr_bJQ

• "Sinus Tachycardia 100-150 bpm (AHA Guidelines 2005).

  • Impulses originated from the SA node with a notched R wave (making it look wider).

  • There is a block in either the Left or Right bundle branches. 12-Lead ECG is needed to identify the delay of conduction. Modified Chest Leads (MCL) 1 or 6 are used for continuous monitoring."