Difference between revisions of "ECG (main)"
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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]] | ||
*[[T Waves]] | *[[T Waves]] | ||
| + | *[[R-wave in V1]] | ||
| + | *[[Wide QRS]] | ||
==Hypertrophy/Enlargement== | ==Hypertrophy/Enlargement== | ||
{{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= vNc4Xhbjh9o}} | ||
| − | == | + | ==References== |
| − | + | <references/> | |
| − | |||
| − | [[Category: | + | [[Category:Cardiology]] |
Latest revision as of 15:06, 21 December 2020
This page is for adult patients. For pediatric patients, see: ECG (peds)
Contents
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 AV block type I (Wenkebach)
- Second degree AV block type II
- 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