12 leads Flashcards
einthovens triangle Lead 1
lead 1: -RA to + LA
0 degree
einthovens triangle Lead 2
- RA to + LL
+60
einthovens triangle Lead 3
- LA to +LL
+120
einthovens triangle avf
heart to feet
einthovens triangle avl
heart to LA
einthovens triangle avr
heart to RA
inferior
2,3,avf
septal
v1,v2
anterior
v3,v4
lateral
v5,v6
1,avl
tall peaked p wave (2.5mm)
P pulmonale
r atrial enlargment
copd, pulmonary hypertension
p wave with notch or hump in it
p mitral
left atrial enlargement, has hump because it has to travel through an elarged atrium
short pri
can mean junctional rhythm
lown ganong levine
impulse travels down james fibers and bypasses av node
short pri
delta wave
wide qrs
wolff parkinson white
pr depression
pericarditis
deep s and r waves in precordial leads
LVH
more than 35mm
in v1 and v2 r wave taller than s wave
rvh
slurred s wave in v6
RBBB
lBBB in v1
slurred s wave in v6
intraventricular conduction delay
both bundle branches blocked. hyper k
causes of LBBB
anterior septal MI
ischemic heart disease
congenital
causes of RBBB
pulmonary disease
ischemic heart disease
congenital
sgarbossa critera
> 1 lead with >1mm concordant ste
1 lead v1-3 with 1 mm concordant st depression
1 lead with excess 25% discordant ste
how to diagnose axis deviation
lead 1 left side of heart: + toward - away
avf bottom: same
osborne wave
notching on j point meaning hypothermia
normal qt interval
440/460 ms male/female
1 avl artery
high lateral wall left circumflex
2 3 avf artery
inferior wall rca
1 2 artery
interventricular septum LAD
v3 v4 artery
anterior wall LAD
V5 V6 artery
low lateral wall
circumflex
