EKG Notes
● QT interval upper limit for zofran: 0.4
● v tach up and down aggressively
● v fib wiggly
● a fib no p waves & irregular qrs
● a flutter sawtooth
● asystole flat line
● pea looks normal but no pulse
● ischemia is inverted waves
● pacemaker has one big line before qrs
● stemi: st elevation if line straight out from j point is elevated
○ in 2 or more numerically consecutive or anatomically contiguous leads
○ elevation > 1 box
● extensive anterior mi: st elevation in 4 or more consecutive anterior leads
○ v1-v6, at least 4 consecutive leads
● left ventricular hypertrophy: super far down deflection in v1-3
○ see if v1 or v2 is more negative & count how negative (each square = 5mm)
○ see if v5 or v6 is more positive & count how positive the deflection is (1 sq =
5mm)
○ add the numbers, if >= 35, LVH
● bundle branch block needs wide qrs > 1 square
○ right bbb = 2 bunny ears up in v1
■ down in v6 (M W)
○ left bbb = inverted & down in v1
■ up in v6 (W M)
● inferior mi
○ st elevation in leads 2, 3, avf
, ○ move v4 to right, if st elevated = right ventricular infarction = NO NITRO
● anterior is v1, v2, v3, v4
● lateral is 1, avl, v5, v6
● septal is v1 & v2
● hypothermia can cause osborn/j wave which is a second smaller r wave next to the first
in v5
read in this order:
v1, (for bbb)
1, avl, v5, v6, (lateral)
2, 3, avf, (inferior)
v1, v2, v3, v4 (septal/anterior)
● avr is normally inverted
● flipped t waves are reciprocal changes in opposite leads of an mi/elevation
● premature ventricular contraction: extra stuff between qrs complexes from extra beats,
looks funky and rounded
● premature atrial contraction: looks like a complete beat placed in between normal rhythm
● QT interval upper limit for zofran: 0.4
● v tach up and down aggressively
● v fib wiggly
● a fib no p waves & irregular qrs
● a flutter sawtooth
● asystole flat line
● pea looks normal but no pulse
● ischemia is inverted waves
● pacemaker has one big line before qrs
● stemi: st elevation if line straight out from j point is elevated
○ in 2 or more numerically consecutive or anatomically contiguous leads
○ elevation > 1 box
● extensive anterior mi: st elevation in 4 or more consecutive anterior leads
○ v1-v6, at least 4 consecutive leads
● left ventricular hypertrophy: super far down deflection in v1-3
○ see if v1 or v2 is more negative & count how negative (each square = 5mm)
○ see if v5 or v6 is more positive & count how positive the deflection is (1 sq =
5mm)
○ add the numbers, if >= 35, LVH
● bundle branch block needs wide qrs > 1 square
○ right bbb = 2 bunny ears up in v1
■ down in v6 (M W)
○ left bbb = inverted & down in v1
■ up in v6 (W M)
● inferior mi
○ st elevation in leads 2, 3, avf
, ○ move v4 to right, if st elevated = right ventricular infarction = NO NITRO
● anterior is v1, v2, v3, v4
● lateral is 1, avl, v5, v6
● septal is v1 & v2
● hypothermia can cause osborn/j wave which is a second smaller r wave next to the first
in v5
read in this order:
v1, (for bbb)
1, avl, v5, v6, (lateral)
2, 3, avf, (inferior)
v1, v2, v3, v4 (septal/anterior)
● avr is normally inverted
● flipped t waves are reciprocal changes in opposite leads of an mi/elevation
● premature ventricular contraction: extra stuff between qrs complexes from extra beats,
looks funky and rounded
● premature atrial contraction: looks like a complete beat placed in between normal rhythm
