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IM
EKG
35
Medical
Graduate
02/03/2014

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Cards

Term
How do you count down the rate on EKG
Definition
300, 150, 100, 75, 60, 50
Term
If the heart rate is irregular how do you estimate rate on EKG
Definition
count cycles on whole strip and x by 10
Term
how much time is one small box
Definition
40ms
Term
how much time is 1 large box
Definition
200ms
Term
how many boxes is 1 second
Definition
5 large boxes
Term
normal PR interval
Definition
3-5 small boxes
Term
normal QRS interval
Definition
1.5-3.5 small boxes
Term
normal QT interval
Definition
half of the RR
Term
types of AV blocks
Definition
primary: prolonged PR
secondary 1: progressively prolonging PR followed by dropped beat
secondary 2: some p waves dont make QRS (dropped beats occassionally)
tertiary: no association twix P waves and QRS
Term
sinus arrhythmia
Definition
irreg ryhtm (usually with respirations and normal). all the P waves look the same
Term
wandering pacemaker
Definition
irreg rythm with change in P wave shape as the location changes.
Term
rate in wandering pacemaker
Definition
less than 100 bpm
Term
what looks like a wandering pacemaker but with a higher rate
Definition
multifocal atrial trachycardia.
Term
speed of the different escape ryhtms
Definition
atrial: 60-80
junctional: 40-60
ventricular: 20-40 (will have a wider QRS)
Term
What is an escape BEAT
Definition
when the SA node doesnt fire and a new focus gives a rescue beat before SA resumes
Term
What is the qrs is wide in an escape beat?
Definition
the beat is coming from the ventricle
Term
what are the premature beats?
Definition
1. PAC
2. premature junctional beat
3. PVC
Term
what do PAC look like?
Definition
abnormal p wave shape compared to the other P waves

may or may not have a QRS
Term
what do PVCs look like
Definition
abnormal QRS interval
weird, wide QRS
bigeminy, trigeminy, quadrigeminy
Term
paroxsysmal atrial tachycardia
Definition
irritable atrial focus at 150-250 bpm
Term
What does RBB look like?
Definition
look at the QRS in V1 or V2
has an R and R'
Term
What does LBB look like?
Definition
look at QRS in V5 or V6
has R and R'
Term
What leads do you look at to determine axis?
Definition
I and aVF
Term
When can you NOT comment on atrial hypertrophy
Definition
if there is a flut or a fib
Term
What lead do we look at for atrial hypertrophy
Definition
V1
Term
How do we determine atrial hypertrophy?
Definition
R: large diphasic P wave with tall initial component in V1

L: large diphasic P wave with tall terminal component in V1
Term
What does RVH look like on EKG
Definition
1. R>S in V1
2. The R gets smaller as you move from V1 to V6
3. S wave persists in V5 and V6
4. R axis deviation
Term
What does LVH look like on EKG
Definition
S in V1 + R in V5 > 35mm

also get left axis deviation

also get inverted T waves with rapid upstroke
Term
3 signs of infarctino
Definition
1. Q waves
2. Inverted T
3. ST elevation or depression
Term
What does each of the EKG signs of infarct mean?
Definition
q= necrosis
inverted t= ischemia
ST ele= injury
Term
what does it mean to have a "Q wave"
Definition
q wave greater than 1 small square wide
Term
features of LAD occlusion
Definition
1. Anterior infarct
2. q waves in V1-V4
Term
features of circumflex occlusion
Definition
q waves in AVL and I
Term
features of RCA occulsion
Definition
1. RCA can be posterior or inferior
2. V1 and V2 ST depression and large R wave
Term
Features of LCA occlusion
Definition
1. Inferior infarct
2. Qs in II, III, AVF
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