The use of limit amplitude technique in clinical cardiac electrical signal recording
Fan, S.; Pan, Y.; Cai, Y.; Liu, J.; Liu, G.; Zhao, L.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 18(2): 326-329
2001
ISSN/ISBN: 1001-5515 PMID: 11450567 Document Number: 529022
Based on the electrophysiologic mechanism of cardiac electrical action and the theory of voltage effect, the limit amplitude technique was employed to obtain the best clinical record effects. The results showed that limiter could limit the oversize signals overlapping each other and make the tiny signals magnification without distortion, such as the His bundle deflection in His Bundel Electrogram. At the same time, all signals recorded at multichannel physiologic recorder were clear and did not interfere with each other. Furthermore, the limiter not only improved the recording quality but also protected the cardiac electronic equipment because overdue stimulation signal was limited at a given electronic level during the recording of transesophageal pacing.