Difference between revisions of "ECG (main)"
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==Measurement== | ==Measurement== | ||
| + | [[File:ECG Principle fast.gif|thumb|Transmission of a cardiac action potential through the conduction system of the normal human heart]] | ||
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''All these measures are valid for the standard paper speed of 25 mm/Sec'' | ''All these measures are valid for the standard paper speed of 25 mm/Sec'' | ||
Revision as of 12:11, 6 April 2019
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
AV Blocks
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
Premature Beats
See Also
External Links
Videos