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38 Cards in this Set
- Front
- Back
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what are the irregular rhythms called?
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Wandering pacemaker
multifocal atrial tachy A fib |
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what are the characteristics of a wandering pacemaker?
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variation in the shape of the P waves
atrial rate <100 irregular ventricular rhythm |
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what are the characteristics of multifocal atrial tachycardia?
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caused by COPD
HR >100 P waves of various shapes irregular ventricular rhythm |
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characteristics of Atrial fibrillation
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continuous, chaotic atrial spikes
|
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bradycardia
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rate lower than 60
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Tachycardia
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Greater than 100
|
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norm PR
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.12 - .2
3 to 5 boxes |
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norm QRS
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.05 - .1
1 - 2.5 boxes |
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norm QT
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less than 1/2 RR
|
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junctional rhythm rate
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40 to 60
|
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ventricular rhythm rate
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20 to 40
|
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PVC
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ventricular contraction that overrides normal pacemaking.
compensitory pause following the PVC |
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PVC that falls on a T wave produces?
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VTachy
|
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1st deg AV block
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prolonged PR
|
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2nd deg AV block, Type I is also called
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wenckeybach
or Mobitz I |
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2nd deg AV block type I characteristics?
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progressively elongating PR interval with an eventual skipped beat
|
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2nd deg AV block, type II is also called
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Mobitz II
|
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2nd deg AV block, type II presents with
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multiple p waves for every QRS
|
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3rd deg AV block
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disconnect btw p waves and QRS
QRS rate 40 to 60 |
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A bundle branch block presents with
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a double peaked QRS
R-R' |
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Lead I axis of rotation
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0 deg
|
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Lead II axis of rotation
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60 deg
|
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Lead III axis of rotation
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120 deg
|
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AVF axis of rotation
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90 deg
|
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AVR axis of rotation
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-150 deg
|
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AVL axis of rotation
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-30 deg
|
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flattened or inverted T wave is indicative of
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ischemia
(also, hypokalemia, digoxin effect, LV hypertrophy) |
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what does an ST elevation typically indicate
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acute MI
|
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shortened QT interval indicates?
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hypercalcemia
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prolonged QT interval indicates
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hypocalcemia
|
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what does a significant Q wave indicate
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necrosis of a MI
|
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what do U waves indicate?
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Hypokalemia
|
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what do spiked T waves indicate?
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hyperkalemia
|
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on what leads do you look for a lateral infarction?
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aVL & I
|
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on what leads do you look for an anterior infarction
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V1 through V4
|
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on what leads do you look for an inferior infarction?
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I II and aVF
|
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what do you look for that indicates COPD or pericarditis
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a small QRS
|
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what is a tell tale sign of the digitalis effect?
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handlebar mustache appearance of the J portion of QRS
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