Another question/s on EKG

[marly]

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1/ Do you see any difference between PVC ( Bigemini/ Trigemini etc) and ventricular extrasystole ?

To me both have wide QRS complex. Both occur usually NOT with tachycardia, usually with normal heart rate.

2/ Do you calculate axis with exact degrees ?

I could only tell if it is left/ normal/ right; Are we supposed to know the exact axis 1-90/0-180 etc ? How difficult is it to learn this ?

Thanks.

 

[pansoiatr]

1.I dont really understand your question.An extrasystole (ventricular) is just an impulse that originates from the ventricles(hence wide QRS because it doesnt propagates threw specialized tissue like sinus rhytm.Bi-Trigeminies are just 2 or 3 ventricular extrasystole together
2.In the leads I,II,III the lead that has equal r and s in the qrs complex is perpendicular to the axis of the heart

 

[Mumpu]

Extrasystole is a PVC.

The exact axis of the QRS complex is not diagnostically important but the deviation should be explained (i.e. left axis deviation due to..., right axis deviation due too...). A lot of people don't take the "due to" step for some reason.

 

[Trifling Jester]

The exact axis of the QRS complex is not diagnostically important but the deviation should be explained (i.e. left axis deviation due to..., right axis deviation due too...). A lot of people don't take the "due to" step for some reason.

Yes it is. You need it to determine if there is a hemiblock.

-The Trifling Jester

 

[Mumpu]

Fascicular hemiblocks are not diagnosed based on the exact degree of the QRS axis, but rather on the fact that there is left or right deviation with the appropriate morphological criteria in the limb leads (or the precordial leads in the case of the septal fascicle block).

 

[Trifling Jester]

Fascicular hemiblocks are not diagnosed based on the exact degree of the QRS axis, but rather on the fact that there is left or right deviation with the appropriate morphological criteria in the limb leads (or the precordial leads in the case of the septal fascicle block).

I'm not going to argue about this, but if you don't know how much of a left or right axis deviation there is then you can't call the hemiblock.

-The Trifling Jester

 

[marly]

is this the same as Fascicular block ???

According to my text book- LAFB means LAD + S wave in inferior leads + R wave in I + absence of incomplete or complete LBBB.

Does incomplete LBBB mean the QRS can be shorter than 120 ms ??

Also I heard someone saying QRS in LBBB/ RBBB varies, but my EKG book says for both > 120 ms with RSR / notched pattern is fine.