V1 localization?

lateral

avr localization?

lateral

avl localization


v5 localization?

lateral

v6 localization?

lateral

avf localization?

inferior

III localization?

inferior

v2 localization?



anterior/septal


anterior/septal




anterior/septal


Second Degree AV Block Type I Mobitz I
increased Pr interval until no P wave can be seen
next P wave has shorter pr interval

Third degree heart block
no p waves

2nd degree mobitz type 2 heart block sign is
sudden non-conducted P waves with no change in PR intervals

first degree hear block
prolonged PR interval
What defines the PR interval?

The P waves are completely dissociated from the QRS complexes. The QRS complexes are narrow, indicating a ______ rhythm

Third degree AV block
junctional escape rhytm

In atrial fibrillation, however, the P waves, which represent depolarization of the atria, are absent

right bundle branch block
greatly prolonged QRS complex

Left bundle branch block
there is a QRS width greater than 0.12 sec. This indicates a bundle branch block. There is also a left axis deviation, which is consistent with a left bundle branch block.

atrial flutter

left bundle branch block
prolonged qrs
left axis deviation (lead III)

first degree heaert block

second degree mobitz type 1
inversion of lead I
reversal of leads II and III
reversal of leads aVR and aVL

reversal of right and left arm electrodes:
upright in Leads I and II is a ___ ekg

normal
what is the extent of the qrs

what is the extent of the t wave


what is the extent of the qt interval


what is the extent of the st interval?


nml ekg axis is ___ to ___ degrees
90 to -30

Lead I is positive and aVF is negative = ___ axis deviation

left axis deviation
(lead I is normally a left sded lead)
Lead I is negative and aVF is positive = ___ axis deviation

right
if you can detect _____. qrs. the axis must be perpendicular to it..
isoelectric
e.g. if it was lead III.. axis would be +30


st segment elevation

st segment depression or t wave inversion
Nstemi indicates

Acute MI, Ischemia, toxins, CMP
St elevation indicates
Acute MI, Pericarditis, ventricular aneurysm,
normal variant
good or bad?


good or bad?


ischemic.. resting is ____ negative, rate of upshoot isnt as fast
less negative

___ wave is a late change
that signifies how permamnent
the heart damage is

q
___ is the first evolution in a stemi
hyperacute t wave

Q waves that represent prior MI?
1 are one box wide, one box deep
- 1/3 the QRS height
- in contiguous leads (same wall)

after is..


after

t wave inverts

after



all 3 negative in lead I –> right arm left arm reversal




first degree heart block