Embedded Files
Rate
300/ RR interval
10 seconds stripe - number of QRS x 6 if irregular
Rythymn
regular / irregular
Axis ( quick rule )
right axis deviation
left axis deviation - away from each other
RBBB/ LBBB
RBBB - r'R v1 - v3, - RM
LBBB - LW - W v1, ( LAFB - I,aVL - qR wave, inferior leads - rS wave with left axis deviation)
LVH - tall R waves, left axis deviation
Right heart strain
S1 Q3 T3
V1-v3 T wave inversions
left heart strain
V5-V6 t wave inversion
ST / T wave changes
q waves
new t wave inversion
ST elevation / depression
STEMI
V1, V2, - septal leads
V3 - anterior lead -
V5, V6, AVL - lateral - LAD
II, III, AVF - inferior - RCA / left circumflex
V6, 7, 8 - posterior - LCx
reciprocal changes mnemonic : PAIL posterior anterior - inferior lateral
Bruaga syndrome type I type II
De Winter syndrome - ST depression at V1- V6 - anterior STEMI equivalent - occlusion of LAD artery
Wellen syndrome - biphasic t wave
Sgbossa criteria - diagnosing MI in patients with LBBB
concordant ST changes with QRS
Electrolytes
hypok - long pr, long qt, u wave
hyperk - prolonged pr interval,tall t wave, sine waves, prolonged pr interval
hypoMg
hypoca
hyperca
hypothermia - shivering artefect, osborn wave
sinus tachy
narrow qrs - SVT
wide QRS - VT / VF
pulesless VT / VF - CPR - shock - cpr
pea/ asystole
sinus bradycardia
first degree - prolong pr interval
2nd degree
type i - progressive prolonged pr until drop QRS
type ii - constant pr until drop QRS
3rd degree / CHB
no association between p and qrs complex
T wave with RBBB
secondary changes / concordnat changes of t wave following RBBB - can be normal
RBBB with LAFB - always abnormal
Left anterior fasciualr block
criteria :
Left axis deviation
aVL, I - q wave + R wave - lateral leads
small r wave, deep s wave - inferior leads
cannot diagnose with prior inferior MI
left posterior fasciular block - always abnormal in normal people
criteria
Left axis deviation
avL, I - small r wave + deep s wave - lateral wave
q wave + wave - inferior leads
bifasciular block
RBBB + LAFB / LAPB
trifascular block
RBBB, LAFB, LPFB
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