Effects of inadequate low-pass filter application.
Some technical aspects in the ECG recording, although basic, are not well enough known. In this short communication we present two examples in which the low-pass filter attenuates or eliminates electrocardiographic signals which are important from the clinical point of view.
García-Niebla
Javier
J
Servicios Sanitarios del Area de Salud de El Hierro, Valle del Golfo Health Center, Islas Canarias, España. jniebla72@hotmail.com
Serra-Autonell
Guillem
G
D016477:Artifacts; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D004562:Electrocardiography / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted