EKGs Flashcards
LAFB
LAD, qR (I, aVL), rS (II, III, aVF), large S (V4-V6), poor R wave progression.
No other reason for LAD.
Can Left anterior fascicular block can mask the presence
of inferior wall MI?
yes
where is the p wave usually found in an APC?
in T wave
Most common Underlying cause of LPFB
CAD
Name the abnormality: prolonged QT from ST lengthening
Hypercalcemia
Name the other EKG finding and lab abnormality assoc. w/ QT shortening, reversible LAFB/LPFB, QRS wide, disappearing p waves.
Peaked T
Hyperkalemia
Name the abnormality: prominent U, ST depression, flat T, QT prolonged, arrhythmias
Hypokalemia
6 things that prolong QT
Low mag Low calcium Myocarditis MVP hypothyroidism Hypothermia
6 things that shorten QT
BB dig Hyperkalemia Hypercalcemia Hyperthyroidism Hypothermia
in RBBB, axis is usually normal. When is it not?
if there is also LAFP or LPFB
in AV dissociation, is atrial rate or ventricular rate faster?
ventricular
name 3 things commonly seen in AIVR
ventricular capture beats, fusion beats and AV dissociation
when diagnosing an inferior MI, age indeterminate, what else should you look for?
posterior MI (prominent R in V1, V2)
criteria for low voltage on ekg
limb leads < 5mm (includes R + S)
precordial < 10mm
Cornell Criteria for LVH
R aVL + S III > 20mm females/ > 28mm Males
