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32 Cards in this Set

  • Front
  • Back
depolarization may be considered an advancing wave of ______ charges
+ charge moving towards + electrode is recorded as ____ deflection
atrial depolarization is recorded as a ___ wave on EKG
name 2 AV values
what side are they on
tRIcuspid (RIght)
mitraL (Left)
order of ventrical depolarization
order of ventrical repolarization
depolarization: endo-->epi
repolarization: epi-->endo
first downward wave of ventrical depolarization
rapid phase of ventricular repolarization
T wave
EKG interval that correlates with duration of systole
QT: begins with QRS and persists until end of T wave
T or F: QT is considered normal when it is less than 1/4 R to R interval
F: QT is normal when it is less than 1/2 R to R interval
Time interval between two heavy black lines
Time interval between two light black lines
How many squares are between 2black lines
4 small squares represents ___ of a sec
2 small squares represents ___ of a sec
The amt of EKG paper that passes out of an EKG machine in .12sec is
3 small squares
which limb is positive in:
a. lead I
b. lead II
c. lead III
a. left arm
b. left leg
c. right arm
which limb is positive in:
a. AVR
b. AVL
c. AVF
a. right arm
b. left arm
c. left foot
a. lateral leads
b. inferior leads
a. I and AVL (each has electrode on left arm)
b. II, III, AVF (each has a positive electrode positioned on left foot)
a. right chest leads
b. septal chest leads
c. left chest leads
a. V1, V2
b. V3, V4
c. V5, V6
which leads are in the frontal plane
which leads are in the horizontal plane
chest (V1-V6)
How does severe pain cause syncope
parasympathetic reflex --> release of AcH --> slow rate of SA node pacing and dilation of systemic arteries (hypotension) to cause loss of consciousness
2 indications for induced gagging or carotid sinus massage
convert supraventricular tachycardia to sinus rhythm by inhibits irritable focus

2:1 AV block, atrial flutter
inhibits AV node (increases refractoriness)
what 5 things do you need to consider when interpreting an EKG
inherent rate of
a. atria
b. AV junction
c. ventricles
a. 60-80
b. 40-60
c. 20-40
name the triplets (rate)
how do you determine rate of bradycardia
count # cyclesin 6s strip *10
which conduction tract innervates the left atrium
bachmann's bundle
3 types of irregular rhythms
wandering pacemaker
multifocal atrial tachycardia
p wave shape varies
atrial rate <100
irregular ventricular rhythm
wandering pacemaker
what type of rhythm do you often see in pt with COPD
multifocal atrial tachycardia
p wave shape varies
atrial rate >100
irregular ventricular rhythm
multifocal atrial tachycardia
continuous chaotic atrial spikes
irregular venticular rhythm
no p waves