Pediatric Ecgs
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Transcript of Pediatric Ecgs
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ECGs
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How to read ECGs
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Start to determining:
Heart rate
Rhythm
Electrical axis
Ventricular hypertrophy
Systematically PR interval,RSinterval,! interval,P waves,! waves
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Rule o" thum#
$ne large s%uare &''(min
!wo large s%uare )*'(min
!hree large s%uare )''(min
+our large s%uare *(min
+ive large s%uare -'(min
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.nterpreating ECG :
Patients age
Cardiovacular drug
Electrolite im#alance
.ndication o" ECG
Previous ECG Clinical diagnosis
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!he )/ views o" the heart
!he heart is a three dimensional organ
Six lim# leads and six precordial leads
0eads V),V/,V&,V1 : anterior
.,2V0,V*,V- : le"t lateral
..,...,2V+ : in"erior
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!he heart rate o" pediatric varies w age
3ew #orn ))'4)*'
/ years 5*4)/*
1 years *4))*
- years -*4)'' $lder than - years -'4)''
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!achycardia may #e caused #y
Sinus tachycardia
SV!
Ventricular tachycardia
2trial "i#rilation
2trial "lutter
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6radycardia may #e caused #y
Sinus #radycardia
3odal rhythm
/nd degree 2V #loc7
&rd degree 2V #loc7
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Rhythm
P wave in "ront o" each RS
P axis ' to 89' degree
pright in .,..,aV+
2#normal rhythm: );a#sence o"
P;/;
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2#normal PR interval
Prolongation o" PR
=myocarditis,2S>,toxicity
digitalis,hyper7alemia,ischaemia? Short PR =@P@,glycogen storage disease
,lown ganong levine syndrome?
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2#normal RS axis
0e"t axis deviation 02> i" RS Alower limit
R2> : RS greater than the upper limit
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Ventricular hypertrophy
RVH:R2>,RBS in V),SBR in
V-
0VH:R8S in V),V- B&*mm
R in 2V0 B)&mm
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