Normal QRS interval

[MichEMT]

I've always known that 0.08 - 0.12 seconds is the normal QRS interval. But we had a refresher at work and the instructor said it's 0.06 - 0.10. What's considered standard? What do you guys typically use?

 

[fred77]

Standard for is as long as its not greater than .12 sec, you should be fine

 

[merciii85]

I've always known that 0.08 - 0.12 seconds is the normal QRS interval. But we had a refresher at work and the instructor said it's 0.06 - 0.10. What's considered standard? What do you guys typically use?

Yeah, most go with 0.06 to 0.10 seconds as the standard QRS range, anything over that starts to look borderline. Some sources do say up to 0.12 is okay, but its less common. Out of curiosity , was your instructor talking about it in a specific context, like pediatrics or bundle branch blocks? That might explain the stricter range.

 

[Cod3Blu3Runn3r]

I've always known that 0.08 - 0.12 seconds is the normal QRS interval. But we had a refresher at work and the instructor said it's 0.06 - 0.10. What's considered standard? What do you guys typically use?

Most references suggest that a normal QRS duration falls between 0.08 and 0.12 seconds. Sure, some sources might begin as low as 0.06, but honestly, the 0.08 to 0.12 range is what most people agree on. So, you were definitely on the right track with your original understanding