ECG (main): Difference between revisions
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==Primary Analysis== | ==Primary Analysis== | ||
*[[ECG Rhythms]] | *[[ECG Rhythms]] | ||
*[[ECG Axis]] | *[[ECG Axis]] | ||
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==Hypertrophy/Enlargement== | ==Hypertrophy/Enlargement== | ||
{{Cardiac hypertrophy DDX}} | {{Cardiac hypertrophy DDX}} | ||
{{Heart block DDX}} | |||
==See Also== | ==See Also== | ||
*[[ACS - Anatomical Correlation]] | *[[ACS - Anatomical Correlation]] | ||
Latest revision as of 12:35, 14 May 2022
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}}