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24 Cards in this Set
- Front
- Back
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How does L Anterior Hemi-Fascicular block present on EKG?
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taller R laterally, deep S inferiorly
normal QRS, ST, T LAD |
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How does L Posterior Hemi-Fascicular block present on EKG?
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RAD, Tall R waves inferiorly, Deep S laterally
normal QRS, ST, T |
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RBBB description
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RBB blocked, so activation circles around myocardium, leading to late R' (like on V1)
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What causes wide S in lead I?
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circling back of signal after polarization to left side
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LBBB EKG characteristics
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rS wave on V1, splitting of R wave on V6
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RBBB
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V1 has R and R'
V6 has deep, curved S wave |
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3 criteria for acute MI in LBBB
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>1mm STE concordant w/ QRS
>1mm STD in V1-3 >5mm STE discordant w/ QRS |
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What can RV pacemaker look like?
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LBBB
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2 classic things for BiV pacing
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negative QRS in lead I
positive R in V1 |
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What is the delta wave correlated to?
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ventricular preexcitation
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6 presentations of hyperkalemia on ECG
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LAFD, LPFB
tall peaked T waves 1st degree AV block flat/wide P waves wise IVCD VIT, VF |
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6 presentations of hypokalemia
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inc amplitude and width of P wave
inc PR interval T wave flattening/inversion ST depression prominent U waves |
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Bottom line with hypercalcemia
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Qt shortens
sometimes J waves on V3/4 quicker! |
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Bottom line with hypocalcemia
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QT lengthened
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General description of pulmonary embolism on ECG
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S1Q3T3
S on 1, Q on 3, inverted T on 3 |
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Classic gene in Brugada syndrome
Classic presentation? |
SEN5a (loss of function)
coved (hump) after QRS in V1/2 |
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Heart layer affected in Brugada syndrome
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epicardium
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LQTs 2 inheritance patterns and syndrome name
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AD: Romano-Ward Syndrome
AR: Jervell-Lange-Nielsen syndrome |
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6 components of LQTs risk stratification
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hx of syncope or arrest
QTc > 500ms FHx of SCD T wave alternans JNL syndrome (deafness) 2:1 AV block |
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3 types of LQT triggers
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LQT1-exercise
LQT2-auditory (like alarm clock) LQT3-sleep/rest |
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Ways to ID LQT on ECG
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LQT1 has higher/wider T wave
LQT3 looks like a bedframe LQT2 is in between (kind of wavy) |
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Some tx for LQTs
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beta-blocker therapy
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Key findings on ECG for ARVC
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inverted T-waves in V2-3
epsilon wave in V1-3 (just beyond QRS) |
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What part of the RV is often not involved in the path changes?
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septum
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