Lec 2-3 EKG Images Flashcards
What type of rhythm is this?
Sinus arrhythmia = non-pathological variation with respiration = looks irregular in bunches
What type of rhythm is this?
premature atrial contraction = early QRS complex originated by abnormal P wave followed by compensatory pause; but QRS complex itself looks normal
What type of rhythm is this?
premature ventricular contraction
Is this sinus rhythm? What is it?
No! because P waves present and regular but not upright in I/II
since P wave = problem is not with atria,
must be problem with where focus is [atrial rhythm/tachycardia with focus coming from somewhere else], or heart just not where its supposed to be [dextrocardia] OR you put leads in the wrong dir [inverted right and left]
What causes this rhythm?
dextrocardia
inverted P wave in I, decreasing amplitude from V1 to V6 [opposite what you’d expect = muscle mass decreasing toward left]
What causes this rhythm?
p wave inverted 1, 2 but normal progression of QRS so unlikely to be dextrocardia
III + aVF = good; aVL should have been upright but its not; aVR should have been negative but its not
–> you accidentally switched L and R
Sinus or non-sinus? Normal, brady, or tachy?
sinus bradycardia
What rate? Sinus or non? Normal brady or tachy?
sinus tachycardia
What axis?
right axis deviation à V1 negative, AVF positive
What axis?
left axis deviation à V1 positive, AVF negative
What axis?
left axis deviation
What causes this type of axis?
left anterior fascicular block
What causes this?
left bundle branch block = broad QRS, looking down in V1
What causes this?
right bundle branch block = broad QRS, looking up in V1
What causes this?
right bundle branch block = broad QRS, looking up in V1
What causes this?
left bundle branch block = broad QRS, looking down in V1
What rhythm is this?
right BBB à broad QRS, rabbit ears, upright V1
What rhythm is this?
WPW à short PR, delta wave on upstroke of QRS, broad QRS
What rhythm is this?
posterior wall infarct –> huge positive R in V1, prominent Q waves in leads II and III [inferior leads]
What rhythm?
LVH
What rhythm?
RVH with right axis deviation
What rhythm is this?
Wolf parkinson white = WPW
What rhythm is this?
wolf parkinson white = WPW
What rhythm is this?
Wolf Parkinson White = WPW
What rhythm is this?
Right bundle branch block
What does this rhythm suggest?
posterior infarct
What does this rhythm suggest?
left ventricular hypertrophy
What does this rhythm suggest?
right ventricular hypertrophy
Which leads correspond to inferior wall? septal wall? anterior wall? anteroseptal wall? lateral wall?
inferior = leads II, III, aVF
septal = V1 and V2
anterior = V3 and V4
anteroseptal = V1, V2, V3, V4
lateral = I, aVL, V5, V6 [I/aVL = high lateral; V5/V6 = anterolateral]
What does this rhythm show?
diffuse subendocardial ischemia = ST depressions and T wave inversions