ECG III cont. Flashcards
What may induce currents into the electrode lead wires that cause them to heat and cause thermal injuries to patients?
RF electromagnetic radiation
How do you prevent thermal burns to patient from electrodes? (2)
- Make sure there are no loops of electrode wires.
- Keep them close to one another
–because induced current is proportional to the area of loop formed by the wire.
What does this picture depict?
electrocautery interference
What does this picture depict?

slow electrode displacement
Damaged myocytes appear depolarized all of the time. True or false?
True
Current flows between injured (_____ polarity tissue) and ______ normal tissue.
negative
positive
Ischemia cause inversion of t wave due to altered repolarization.
Where is the J point?



What is depression of the J point?

0.5 mV
The most commonly used parameter for measuring the ST segment is ___ ms post J point.
60 ms