12-Lead EKG Analysis Fall 20021

7/23/2019 12-Lead EKG Analysis Fall 20021

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Introduction to

Electrocardiography

& Dysrhythmias

Janet Smith, RN, MPH


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O!ecti"es

# $o gain a asic %noledge o' cardiacelectrophysiology

# $o understand the representations o' the

cardiac cycle on the E()# $o master techni*ues used 'or learning the

characteristics o' the di''erent dysrhythmias

# $o learn measurement and count techni*uesessential 'or dysrhythmia interpretation


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De'initions

# $achycardia

# +radycardia

# Intrinsic iring Rate

# Isoelectric -ine

Rate o' . /00

Rate i' 1 /00

$he normal 'iring rate 'orthe rhythm o' a certain

pacema%er

$he aseline o' a rhythmhere no electrical

acti"ity is present


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De'initions

# Depolari2ation

# Repolari2ation

# Re'ractory period

$he complete electrical

'iring o' the cells o' the

heart

$he time during hich the

cells recharge a'ter

depolari2ation$he time during the

repolari2ation hen cells

rearm


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De'initions

# PR Inter"al $he distance eteen the eginning

o' inner"ation o' the sinus node

to the eginning o' "entricular

depolari2ation


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(ardiac (onduction


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(ardiac (onduction

P

Q

R

S

T


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(ardiac (onduction

PR

3/4 5 340 s

6

R

S13/4 s

S$

Seg3


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E7) Paper

# Measures time 8 hori2ontal in seconds

# Measures amplitude 8 "ertical in milliamps

# 9ses the Metric system# Is "ery good 'or accuracy


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E7) Paper

/ mm

30: sec334 sec3


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Rate Measurement

;00 di"ided y numer o' ig loc%s

eteen R 8 R inter"al : ? @A


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Rate Measurement

Memori2ation and counting ac%ard

eteen R 8 R inter"al


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Dysrhythmia

(haracteristics


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Normal Sinus Rhythm

# RhythmB

# RateB

# P Ca"esB

# P5R Inter"alB

#


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Sinus +radycardia

# RhythmB

# RateB

# P Ca"esB# P5R Inter"alB

#


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Sinus $achycardia

# RhythmB

# RateB


#


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Sinus Dysrhythmia

# RhythmB

# RateB


#


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Sinus rrest

# RhythmB

# RateB


#


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Premature trial (ontractions

# RhythmB

# RateB


#


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Supra"entricular $achycardia

# RhythmB

# RateB


#


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trial lutter

# RhythmB

# RateB


#


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trial irillation

# RhythmB

# RateB


#


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Junctional Rhythm

# RhythmB

# RateB


#


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irst Degree F +loc%

# RhythmB

# RateB


#


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Second Degree F +loc%


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$hird5Degree F +loc%

# RhythmB

# RateB


#


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Pacema%er Rhythm

# RhythmB

# RateB


#


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Premature Fentricular

(ontractions

# RhythmB

# RateB


#


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e!triular ahar"ia

# RhythmB

# RateB


#


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e!triular i,rillatio!

# RhythmB

# RateB


#


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systole

# RhythmB

# RateB


#


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Idio"entricular Rhythm

# RhythmB

# RateB


#


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$IME OR

SOME


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REMEM+ERGGG

# 9se a systematic approach

# )o through all the steps

# $a%e your timeG

# (ompare ith your characteristics list

#Interpret the dysrhythmia


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trial lutter

# RhythmB

# RateB


#


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Sinus Dysrhythmia

# RhythmB

# RateB


#


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$hird Degree Heart +loc%

# RhythmB

# RateB


#


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Sinus $achy ith PF(s


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Sinus rrest

# RhythmB

# RateB


#


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Sinus Rhythm ith P(

# RhythmB

# RateB


#


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Sinus Rhythm ith F5$ach

# RhythmB

# RateB


#


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cute nterior MI


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Summary

# ou need to learn the de'initi"e

characteristics

# 9se a complete, systematic approach todissect the rhythm

# $a%e your time

# Mista%es are made hen steps are s%ipped

# PracticeG PracticeG PracticeG

12-Lead EKG Analysis Fall 20021

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