EKG Flashcards
1
Q
P-wave
A
atrial depolarization=atrium contracts
2
Q
P-R interval
A
isovolumetric contract. release from AV node down bundle of His into purkinje fibers. “moderator band” =right bundle of His in septomarginal recess of R ventricle
3
Q
QRS
A
ventricular depolarization=ventricle contracts
q-wave=1st downward deflection, Atrial repolarization hidden under QRS complex.
4
Q
T-wave
A
ventricular repolarization=Na+ outside, K+ inside
5
Q
U-wave
A
repolarization of the papillary muscle
6
Q
S-T segment
A
isovolumetric relaxation (no blood in ventricles, valves closed)
7
Q
inverted T-wave or Altered S-T segment
A
myocardial infarction
8
Q
Heart blocks
A
1 elongation of PR interval
2 winkbock phenomena=elongation of PR till 2 atrial depolarization show up
complete= No QRS wave
