⇧
☰
×
ECG
steps
⇲
1 | rate
2 | rhythm
3 | axis
4 | intervals
5 | p waves
6 | qrs complexes
7 | st segments
8 | t waves
specific diagnoses
⇲
acquired long qt
amiodarone toxicity
arvc/d
calcium imbalance
cardiac amyloidosis
cardiac arrest
chronic lung disease
dextrocardia
digitalis toxicity
hypertrophic cardiomyopathy
hypothermia
intracranial hemorrhage
magnesium imbalance
myocardial ischemia-infarct
localization of mi
anterior mi
inferior mi
lateral mi
posterior mi
right ventricular mi
paced rhythm
pacing modes
asynchronous pacing
single-chamber pacing
dual-chamber pacing
pericardial disease
potassium imbalance
pulmonary embolism
shock rhythm
mechanism
⇲
block
ectopy
premature
escape
tachycardia-induced ectopy
reentry
afterdepolarization
sinus
⇲
sinus node dysfunction
sinus tachycardia
atrial
⇲
premature atrial beat
atrial escape beat
atrial tachycardia
atrial flutter
atrial fibrillation
junctional
⇲
av node dysfunction
premature junctional beat
junctional escape beat
junctional tachycardia
avrt
avnrt
ventricular
⇲
bundle branch block
fascicular block
premature ventricular beat
ventricular escape beat
ventricular tachycardia
VT vs SVT
idiopathic VT
polymorphic VT
ventricular fibrillation
inherited
⇲
brugada
cpvt
early repolarization
lown-ganong-levine
long qt
short qt
wolff-parkinson-white
algorithms
⇲
arrhythmia
tachyarrhythmia
bradyarrhythmia
md doodle home
diagnosis & management
lab
cardiology
index
RHYTHM
axis ⇢
⇠ rate
Is it sinus ?
yes
QRS's are preceded by "sinus" P waves
"sinus" P wave is positive in lead II and biphasic in V1
(e.g. normal sinus rhythm,
sinus arrhythmias
)
no
QRS’s are not preceded by P waves or preceded by "non-sinus" P waves
either no P wave, retrograde P wave, or "non-sinus"
P wave
(e.g.
atrial
,
junctional
, and
ventricular
arrhythmias)
Is it regular ?
regular
Rs are evenly spaced
(e.g.
sinus bradycardia
,
atrial flutter
,
junctional tachycardia
)
regularly irregular
Rs are not evenly spaced but follow a pattern
(e.g.
Mobitz type I 2° AV block
,
ventricular geminy
)
irregularly irregular
no recognizable Rs pattern
(e.g.
atrial fibrilation
,
multifocal atrial tachycardia
)
axis ⇢
⇠ rate
related topics
sinus arrhythmia
atrial arrhythmia
junctional arrhythmia
ecg home page
ventricular arrhythmia
conduction system
arrhythmia