ECG (main): Difference between revisions
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== Measurement == | {{Adult top}} [[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 | *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 | ||
* | *Standard 12 lead ECG duration = 10 seconds | ||
{| | {| {{table}} | ||
|- | |- | ||
| Interval | | '''Interval ''' | ||
| Time (s) | | '''Time(s)''' | ||
| Boxes | | '''Boxes''' | ||
|- | |- | ||
| PR | | PR | ||
| Line 16: | Line 17: | ||
|- | |- | ||
| QRS | | QRS | ||
| .06 - 0.10 | | 0.06 - 0.10 | ||
| 1.5-2.5 | | 1.5-2.5 | ||
|- | |- | ||
| QTc | | QTc | ||
| | | <0.44 | ||
| N/A | | N/A | ||
|} | |} | ||
==Primary Analysis== | ==Primary Analysis== | ||
*[[ECG Rhythms]] | *[[ECG Rhythms]] | ||
*[[ECG Axis]] | *[[ECG Axis]] | ||
*[[Low ECG | *[[Low ECG voltage]] | ||
== Segments & Intervals | ==Segments & Intervals== | ||
[[File:SinusRhythmLabels.svg|thumb]] | [[File:SinusRhythmLabels.svg|thumb]] | ||
*[[ST Elevation]] | *[[ST Elevation]] | ||
*[[ST Depression]] | *[[ST Depression]] | ||
*[[QT Prolongation]] | *[[QT Prolongation]] | ||
[[File:ConductionsystemoftheheartwithouttheHeart-en.png|thumb|Conduction system of the heart.]] | |||
[[File:Grid.png|thumb]] | |||
==Waves== | ==Waves== | ||
*[[Q Waves]] | *[[Q Waves]] | ||
| Line 44: | Line 47: | ||
{{Cardiac hypertrophy DDX}} | {{Cardiac hypertrophy DDX}} | ||
{{Heart block DDX}} | |||
==See Also== | ==See Also== | ||
*[[ACS - Anatomical Correlation]] | *[[ACS - Anatomical Correlation]] | ||
*[[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=LCFXZvnW3rg}} | ||
{{#widget:YouTube|id= vNc4Xhbjh9o}} | |||
==References== | |||
<references/> | |||
[[Category:Cardiology]] | [[Category:Cardiology]] | ||
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
Waves
Hypertrophy/Enlargement
Cardiac Hypertrophy and Enlargement
- Right atrial enlargement
- Left atrial enlargement
- Left ventricular hypertrophy
- Right ventricular hypertrophy
Differential includes ischemic events, electrolyte abnormalities, and medication overdoses in addition to rheumatologic conditions[1][2]
- Anterior MI
- Rheumatic fever
- Myocarditis
- Lyme disease
- Lenegre's disease
- Lev's disease
- SLE
- Systemic sclerosis
- Amyloidosis
- Hemochromatosis
- Sarcoidosis
- Hyperkalemia
- Toxicology
AV blocks
- First degree AV block
- Second degree
- Third degree AV block
- AV dissociation without complete heart block
Bundle and Fascicular Blocks
- Right Bundle Branch Block
- Left Bundle Branch Block
- Left Anterior Fascicular Block
- Left Posterior Fascicular Block
- Trifascicular Block
Premature Beats
See Also
External Links
Videos
{{#widget:YouTube|id=LCFXZvnW3rg}} {{#widget:YouTube|id= vNc4Xhbjh9o}}