Offset potential of commercial ECG electrodes.
OBJECTIVE
To determine the offset potential characteristics of commercially available disposable electrocardiograph (ECG) electrodes.


METHODS
Descriptive.


METHODS
Laboratory.


METHODS
Four hundred twenty-eight (214 pairs) disposable ECG electrodes representing 11 manufacturers/types.


METHODS
Direct current offset potential.


RESULTS
The maximum offset potential for any electrode pair of a given type ranged from 0.2 mV to 21.6 mV. Of the 11 types of electrodes studied, three had a mean offset potential of < 0.1 mV and one type had a mean offset potential of > 1.0 mV.


CONCLUSIONS
Although all of the ECG electrodes studied meet applicable standards, the differences found may be important when measuring biologic signals other than the electrocardiogram.
Clochesy
J M
JM
University of Pittsburgh School of Nursing, PA 15261.
Ripich
S
S
Hollowood
D
D
Travis
L L
LL
D004209:Disposable Equipment; D017097:Electric Impedance; D004562:Electrocardiography / Q000295:instrumentation*; D004566:Electrodes; D006801:Humans