Document Detail

An optimized lead system for long-term esophageal electrocardiography.
MedLine Citation:
PMID:  24577330     Owner:  NLM     Status:  Publisher    
Long-term electrocardiography (ECG) featuring adequate atrial and ventricular signal quality is highly desirable. Routinely used surface leads are limited in atrial signal sensitivity and recording capability impeding complete ECG delineation, i.e. in the presence of supraventricular arrhythmias. Long-term esophageal ECG might overcome these limitations but requires a dedicated lead system and recorder design. To this end, we analysed multiple-lead esophageal ECGs with respect to signal quality by describing the ECG waves as a function of the insertion level, interelectrode distance, electrode shape and amplifier's input range. The results derived from clinical data show that two bipolar esophageal leads, an atrial lead with short (15 mm) interelectrode distance and a ventricular lead with long (80 mm) interelectrode distance provide non-inferior ventricular signal strength and superior atrial signal strength compared to standard surface lead II. High atrial signal slope in particular is observed with the atrial esophageal lead. The proposed esophageal lead system in combination with an increased recorder input range of ±20 mV minimizes signal loss due to excessive electrode motion typically observed in esophageal ECGs. The design proposal might help to standardize long-term esophageal ECG registrations and facilitate novel ECG classification systems based on the independent detection of ventricular and atrial electrical activity.
T Niederhauser; A Haeberlin; T Marisa; D Mattle; R Abächerli; J Goette; M Jacomet; R Vogel
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-2-27
Journal Detail:
Title:  Physiological measurement     Volume:  35     ISSN:  1361-6579     ISO Abbreviation:  Physiol Meas     Publication Date:  2014 Feb 
Date Detail:
Created Date:  2014-2-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9306921     Medline TA:  Physiol Meas     Country:  -    
Other Details:
Languages:  ENG     Pagination:  517-532     Citation Subset:  -    
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