Difference between revisions of "ECG (main)"

 
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== General ==
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{{Adult top}} [[ECG (peds)]]
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==Measurement==
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''All these measures are valid for the standard paper speed of 25 mm/Sec''
 
*1 small box = 1mm = 0.04 sec = 40 miliseconds
 
*1 small box = 1mm = 0.04 sec = 40 miliseconds
 
*5 small boxes = 1 big box = 5mm = 0.2 sec = 200 miliseconds
 
*5 small boxes = 1 big box = 5mm = 0.2 sec = 200 miliseconds
*Entire ECG strip is ~10 seconds
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*Standard 12 lead ECG duration = 10 seconds
  
==Rhythms==
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{| {{table}}
*[[Arrhythmias]]
 
 
 
== Intervals  ==
 
{| style="width: 318px; height: 87px" cellspacing="1" cellpadding="1" border="1"
 
 
|-
 
|-
| Interval  
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| '''Interval '''
| Time (s)  
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| '''Time(s)'''
| Boxes
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| '''Boxes'''
 
|-
 
|-
 
| PR  
 
| PR  
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|-
 
|-
 
| QRS  
 
| QRS  
| .06 - 0.10  
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| 0.06 - 0.10  
 
| 1.5-2.5
 
| 1.5-2.5
 
|-
 
|-
 
| QTc  
 
| QTc  
| <0.44  
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| <0.44  
 
| N/A
 
| N/A
 
|}
 
|}
  
==Segments==
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==Primary Analysis==
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*[[ECG Rhythms]]
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*[[ECG Axis]]
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*[[Low ECG voltage]]
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==Segments & Intervals==
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[[File:SinusRhythmLabels.svg|thumb]]
 
*[[ST Elevation]]
 
*[[ST Elevation]]
 
*[[ST Depression]]
 
*[[ST Depression]]
 
*[[QT Prolongation]]
 
*[[QT Prolongation]]
 
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[[File:ConductionsystemoftheheartwithouttheHeart-en.png|thumb|Conduction system of the heart.]]
==Axis==
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[[File:Grid.png|thumb]]
*Cannot be measured if BBBs are present
 
*If up in leads 1 and AVF then normal axis
 
 
 
 
==Waves==
 
==Waves==
 
*[[Q Waves]]
 
*[[Q Waves]]
 
*[[T Waves]]
 
*[[T Waves]]
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*[[R-wave in V1]]
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*[[Wide QRS]]
  
 
==Hypertrophy/Enlargement==
 
==Hypertrophy/Enlargement==
*[[RAE]]
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{{Cardiac hypertrophy DDX}}
*[[LAE]]
 
*[[LVH]]
 
*[[RVH]]
 
  
==Blocks==
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{{Heart block DDX}}
*[[RBBB]]
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==See Also==
*[[LBBB]]
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*[[ACS - Anatomical Correlation]]
*[[LAFB]]
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*[[ECGs by Diagnosis]]
*[[LPFB]]
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*[[STEMI equivalents]]
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*[[Early Repolarization]]
  
== [[Low ECG Voltage]] ==
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==External Links==
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*[http://ddxof.com/ecg-guide/ DDxOf: ECG Guide]
  
==See Also==
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==Videos==
*[[ACS - ECG]]
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{{#widget:YouTube|id=LCFXZvnW3rg}}
*[[ECGs by Diagnosis]]
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{{#widget:YouTube|id= vNc4Xhbjh9o}}
*[[ST Segment Elevation]]
 
*[[ST Segment Depression]]
 
*[[Arrhythmias (DDX)]]
 
*[[QT Prolongation]]
 
  
== Source ==
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==References==
*Adapted from Niemann, Lampe, Pani, Donaldson, ECGpedia.org
+
<references/>
*Journal of Electrocardiology. Vol 43 (2010). 40-42.
 
  
[[Category:Cards]]
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[[Category:Cardiology]]

Latest revision as of 15:06, 21 December 2020

This page is for adult patients. For pediatric patients, see: ECG (peds)

Measurement

All these measures are valid for the standard paper speed of 25 mm/Sec

  • 1 small box = 1mm = 0.04 sec = 40 miliseconds
  • 5 small boxes = 1 big box = 5mm = 0.2 sec = 200 miliseconds
  • Standard 12 lead ECG duration = 10 seconds
Interval Time(s) Boxes
PR 0.12 - 0.20 3-5
QRS 0.06 - 0.10 1.5-2.5
QTc <0.44 N/A

Primary Analysis

Segments & Intervals

SinusRhythmLabels.svg
Conduction system of the heart.
Grid.png

Waves

Hypertrophy/Enlargement

Cardiac Hypertrophy and Enlargement

Differential includes ischemic events, electrolyte abnormalities, and medication overdoses in addition to rheumatologic conditions[1][2]

Types of second degree AV block

AV Blocks

Bundle and Fascicular Blocks

Premature Beats

See Also

External Links

Videos

References

  1. Hampton, JR. The ECG in Practice (5th edition), Churchill Livingstone 2008.
  2. Wagner, GS. Marriott’s Practical Electrocardiography (11th edition), Lippincott Williams & Wilkins 2007.