Flashcards in ECG finishing touches lecture Deck (36):
Bundle of Kent that directly connects atrium to ventricles
PR interval shortened to under 0.12 seconds
QRS widened to more than 0.10
***delta wave present
hallmark*** slurring of upstroke due to Kent bundle conduction (delta wave), wide QRS at base (between 2-2.5 boxes wide), narrow QRS at top
Arrhythmias associated with WPW
A fib (even faster than usual bc Kent Bundle conducts faster than AV node)
**can have vent rates up to 300 with a fib in WPW
Cannot read what in a WPW EKG?
**Cannot interpret Q waves (if present) for MI in the presence of WPW abnormality on ECG.
**Cannot interpret LVH by voltage criteria (if present) in the presence of WPW abnormality.
**Cannot interpret ischemia via ST segment depression or T wave inversion in the presence of WPW abnormality.
99% of the time, irregularly irregular EKG means...
Bypass from atrium into Bundle of His
Very short PR interval
Associated w PSVT
Lown Ganong Levine Syndrome
This drug has a narrow therapeutic to toxic ration and is a potent stimulator of arrhythmias
ST segment scooping
Multiformed PVCs are most common EKG presentation of
Digoxin causes SA nodal suppression and...
*Accelerated junctional rhythm
*Atrial tachycardia with AV block
seen with Digoxin
mild ST segment depression
Flattening of the T wave
Appearance of a U wave
T waves across the entire 12 lead EKG begin to peak
PR interval become prolonged, and the P wave gradually flattens and then disappears
Ultimately, QRS complex widens until it merges with the T wave, forming a SINE WAVE** pattern. V fib may eventually develop
QT interval should not exceed ______ of the R-R interval
erythromycin (and other macrolides)
Pt comes in with chest pain. EKG shows HUGE!!! T waves n V3-V5..whats going on?
Early MI!!! Anterolateral*
Prolonged QT interval puts at risk for...
OD of tricyclic antidepressants can cause...
Pt comes in with diffuse ST elevation..seen in all leads except aVL and aVR. What is it? And DOC?
tx with NSAIDS
EKG with LOW VOLTAGE...what could be going on?
EKG with narrow QRS and rate of 150. Can be 3 things....
1. atrial flutter with 2:1 AV block
3. sinus tachycardia
Young healthy individual
Slight ST elevation
deep T wave inversions until proven otherwise mean...
ischemia or NSTEMI
wide, bizarre QRS complexes
**small vertical line seen before every QRS
electronic ventricle pacemaker!
(ventricles are conducting on a cell to cell basis, which is why there are wide QRS)
vertical line seen before every P wave
Causes SA nodal suppression and AV block
*can basically cause any arrhythmia
Most common arrhythmia caused by Digoxin
2 most specific arrhythmias caused by Digoxin
Accelerated junctional rhythm
Atrial tachycardia with AV block
Diffuse peaked T waves
no P waves
QRS widens, merges with T waves
Sine wave forms
*V fib may eventually develop
Pt comes in with NVD
ECG shows BIG** T waves in precordial leads