I keep a little, ever-expanding note on my phone where I jot down little morsels of goodness that I pick up while listening to or reading one of the many excellent sites/podcasts in the useful resource section.
I’ll try and transfer them here for your enlightenment.
If you’re having trouble interpreting an ECG then go here
If you’re having trouble with the recording of an ECG:
Fuzzy ECGs come from lots of reasons
- EMG signal from muscle (normally filterd out)
- 60Hz which is measured electrical signal in the room
- poor electrode contact makes all of these worse
Things that will help
- a good scrub on the skin will help
- alcohol useful to get skin oils off
In SVT if you’re not sure there’s p-waves
- before you give the nasty adenosine record an ECG at double paper speed (50mm/s instead of 25mm/s). This will half the rate on the print out and make it easier to see.
- doubling the gain can also help if you’re interested in seeing p-waves better