Flashcards in ECG Deck (62)
pacemaker rate at the SA node
pacemaker rate @ AV node
pacemaker rate @ bundle of His, bundle branches, purkinje fibers
normal P wave duration
normal QRS complex duration
normal PR interval duration
ventricular myocyte repolarization (phase 3)
the entire action potential for the ventricular myocytes (depolarization- plateau- repolarization)
ventricular myocyte plateau phase (phase 2)
ECG interpretation - top 4 questions
1. are there P waves?
2. is there a P wave following every QRS?
3. what is pacing the heart?
4. what does each deflection look like?
axis: 0 degrees
axis: 60 degrees
axis: 120 degrees
axis: -30 degrees
axis: 90 degrees
axis: -150 degrees
precordial lead placement: right 4th interspace, adjacent to sternum
precordial lead placement: left 4th interspace adjacent to the sternum
precordial lead placement: positioned halfway between V2 and V4
precordial lead placement: the 5th interspace on the midclavicular line;
precordial lead placement: placed directly lateral to V4 with V5 on the anterior axillary line and V6 on the midaxillary line.
which segment is roughly coincident with phase 2 of the AP?
that point where the QRS joins the ST segment with an angle normally about 90°
The J point
which pacemaker is not included in the PR interval?
the SA node
why is the t wave and the qrs upright?
b/c the myocardium repolarizes in the opposite direction from the depolarization event
waves and complexes analysis consists of what?
p waves are always negative in ______
what is the best lead to look at p waves?
tall p waves in lead 2 & V1 associated with what abnormality?
right atrial conduction abnormality