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== Measurement ==
==Measurement==
[[File:SinusRhythmLabels.svg|thumb]]
[[File:Grid.png|thumb]]
''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
*Standard 12 lead ECG duration = 10 seconds


{| style="width: 318px; height: 87px" cellspacing="1" cellpadding="1" border="1"
{| {{table}}
|-
|-
| Interval  
| '''Interval '''
| Time (s)  
| '''Time(s)'''
| Boxes
| '''Boxes'''
|-
|-
| PR  
| PR  
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|-
|-
| QRS  
| QRS  
| .06 - 0.10  
| 0.06 - 0.10  
| 1.5-2.5
| 1.5-2.5
|-
|-
| QTc  
| QTc  
| <0.44  
| <0.44  
| N/A
| N/A
|}
|}
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*[[ECG Rhythms]]
*[[ECG Rhythms]]
*[[ECG Axis]]
*[[ECG Axis]]
*[[Low ECG Voltage]]
*[[Low ECG voltage]]


== Segments & Intervals ==
==Segments & Intervals==
[[File:SinusRhythmLabels.svg|thumb]]
*[[ST Elevation]]
*[[ST Elevation]]
*[[ST Depression]]
*[[ST Depression]]
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*[[Q Waves]]
*[[Q Waves]]
*[[T Waves]]
*[[T Waves]]
*[[R-wave in V1]]
*[[Wide QRS]]


==Hypertrophy/Enlargement==
==Hypertrophy/Enlargement==
{{Cardiac hypertrophy DDX}}
{{Cardiac hypertrophy DDX}}
==AV Blocks==
[[File:Second degree heart block.png|thumb|Types of second degree AV block]]
{{AV block types}}


==Bundle and Fascicular Blocks==
==Bundle and Fascicular Blocks==
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*[[Left Anterior Fascicular Block]]
*[[Left Anterior Fascicular Block]]
*[[Left Posterior Fascicular Block]]
*[[Left Posterior Fascicular Block]]
==Premature Beats==
*[[Premature junctional complex]]
*[[Premature ventricular contraction]]


==See Also==
==See Also==
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*[[ECGs by Diagnosis]]
*[[ECGs by Diagnosis]]
*[[STEMI equivalents]]
*[[STEMI equivalents]]
*[[Early Repolarization]]
==External Links==
*[http://ddxof.com/ecg-guide/ DDxOf: ECG Guide]
==Videos==
{{#widget:YouTube|id=LCFXZvnW3rg}}
{{#widget:YouTube|id= vNc4Xhbjh9o}}


== Source ==
==References==
*Adapted from Niemann, Lampe, Pani, Donaldson, ECGpedia.org
<references/>
*Journal of Electrocardiology. Vol 43 (2010). 40-42.


[[Category:Cards]]
[[Category:Cardiology]]

Revision as of 12:11, 6 April 2019

Measurement

Grid.png

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

Waves

Hypertrophy/Enlargement

Cardiac Hypertrophy and Enlargement

AV Blocks

Types of second degree AV block

AV blocks

Bundle and Fascicular Blocks

Premature Beats

See Also

External Links

Videos

{{#widget:YouTube|id=LCFXZvnW3rg}} {{#widget:YouTube|id= vNc4Xhbjh9o}}

References