ECG, Arrhythmias Flashcards
Right atrial dilation
Big Ps in INFERIOR leads
Right P wave axis
Left atrial dilation
any negative deflection in V1 or V2 > 1 box wide
Easy criteria for LVH
I + L >11: v. specific LVH
V2 and V5 > 35mm -sensitive
Causes of roller coaster T waves
- increased ICP (SAH)
- metabolic
- coronary disease
Strain pattern
assymetric T waves in LATERAL leads (I, L, V5, V6)
-LVH and dig do this-too much Ca
Low voltage everywhere
effusion
infiltrative process
low voltage in precordial leads only
emphysema
low voltage limb leads
edema, fat
low voltage V4-V6
PTX
SA node supplied by R side ____ of time
AV node supplied by RCA _____ of time
60%
90%
Describe the rhythms of each type of heart block
I: Regular
II: Reg. Irreg.
III: Irreg Irreg.
IV: Regular
Wide + Connected Ps=
BBB or WPW
7 things to look for on ECG in pt with syncope
- WPW/delta wave
- Brugada
- LVH
- Long QT (1/2 RR)
- HyperK
- S1 Q3 T3
- LV aneurysm?
5 types of SVT
- Afib (irreg)
- MAT (irreg)
- AVNRT (160+, no Ps)
- A.flutter (150, no Ps)
- Sinus tach (140s, Ps)
Two rhythms for which Mg is 1st line antiarrhythmic
Torsades, MAT
LV aneurysm pattern
QS pattern and ST elevation in V1, V2
Where and what to look for posterior infarct?
Large R waves and ST depression in V1-V3
What leads show Brugada Syndrome?
V1, V2, V3
- look for R’ in V1 and V2
- look for St elevation in V3
> 1mm in 2 leads
for calling cath lab, not for ruling out MI
Theophylline OD
MAT
Sinus tacky with underlying causes treated:
myocarditis, thyroid storm, PE
When there is a wandering baseline from breathing, where is the best place to look for ST elevation?
at apex or nadir
Axis shift
If R, prob pulmonary part cicurlation problem
If shifted L, prob systemic prob
