42
edits
No edit summary |
|||
Line 7: | Line 7: | ||
{{clr}} | {{clr}} | ||
= | =How do I begin reading an ECG?= | ||
[[Image:Normaal ecg.jpg|thumb| | [[Image:Normaal ecg.jpg|thumb| An example of a normal ECG. ''Click on the Image for an enlargement'']] | ||
Click on the ECG to see an enlargement. | |||
Where do we look at watching an ECG? | |||
* | * top left are the patient's information, name, sex and date of birth | ||
* | * at the right of that are below each other the [[heart frequency]], the [[Conduction time intervals (PQ,QRS,QT)|conduction time intervals]] (PQ,QRS,QT/QTc), and the [[cardiac axis]] (P-top axis, QRS axis and T-top axis) | ||
* | * farther to the right is the interpretation of the ECG written (this often misses in a 'fresh' ECG, but later the interpretation of the cardiologist or cumputer will be added) | ||
* | * down left is the 'paper speed' (25mm/s on the horizontal ax), the sensitivity (10mm/mV) and the filter's frequency (40Hz, filters noise from eg. lights) | ||
* | * finally there is a calibration on the ECG, on the beginning of every lead is a vertical block that shows how high 1mV is. So the height and depth of these signal are a measurement for the voltage. If this is not the set 10mm, there is something wrong with the machine. | ||
* | * further we have the ECG leads themselves of course, what these are will be discussed below. | ||
The lay-out of the paper is for every machine diffrent, but all of the information above can be found somewhere mostly. | |||
{{clr}} | {{clr}} | ||