Sinus Tachycardia with Bundle Branch Block

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.

Category:

Education

Tags:

• Sinus Tachycardia
• Bundle Branch Block
• BBB
• ST
• Sinus Tach
• STach
• RBBB
• LBBB

[ctiger69]

@lungs111 You can only tell if it's right or left bundle branch block by looking at a 12 Lead (V1) and and looking at the QRS duration on the 12 lead. You can not determine if it's right or left by simply looking at a 2 Lead.

[tomgunc]

Mine was like 186 to 200. It was a shot of adrenaline and cortisol from a lousy PANIC ATTACK. Can you believe that adrenaline can do such a thing?? You don't see people jumping off of airplanes from 10,000 feet and their hearts going 180 or 200.....WTF???

[Skippetts21]

just happened to me while i was chillen....... went to the hospital. hopefully nothings wrong, i was gassed up...... would that cause a resting heart rate to enter into sinus tach?

[orthelj2346]

that bundle branch block would not bother me that much it is that 148 bpm resting heart rate the would consern me

[iadknee]

I look at BBB in EKG V1& V6 and Telemetry strips V1 &V2 for Axis deviation. LBBB is associated with L axis dev and RBBB is associated with R axis. Pls correct me if Im wrong.

[nakeya52]

"WHY" d ECG comes out like this?

[thenaes]

I really didnt feel that this needed to continue for more then 15 seconds

[lungs111]

The BBB is likely RBBB because the terminal portion (last 0.04 sec) of the QRS immediately before the J point is positive (upright). LBBB would produce a negative (downward) deflection in front of the J point. Excellent videos!!