The optimal lead insertion depth for esophageal ECG recordings with respect to atrial signal quality.
J Electrocardiol
; 46(2): 158-65, 2013.
Article
en En
| MEDLINE
| ID: mdl-23305907
ABSTRACT
BACKGROUND:
Diagnosing supraventricular arrhythmias by conventional long-term ECG can be cumbersome because of poor p-waves. Esophageal long-term electrocardiography (eECG) has an excellent sensitivity for atrial signals and may overcome this limitation. However, the optimal lead insertion depth (OLID) is not known.METHODS:
We registered eECGs at different lead insertion depths in 27 patients and analyzed 199,716 atrial complexes with respect to signal amplitude and slope. Correlation and regression analyses were used to find a criterion for OLID.RESULTS:
Atrial signal amplitudes and slopes significantly depend on lead insertion depth. OLID correlates with body height (rSpearman=0.71) and can be estimated by OLID [cm]=0.25*body height[cm]-7cm. At this insertion depth, we recorded the largest esophageal atrial signal amplitudes (1.27±0.86mV), which were much larger compared to conventional surface lead II (0.19±0.10mV, p<0.0001).CONCLUSION:
The OLID depends on body height and can be calculated by a simple regression formula.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Fibrilación Atrial
/
Electrocardiografía
/
Electrodos Implantados
/
Esófago
Tipo de estudio:
Diagnostic_studies
Límite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Electrocardiol
Año:
2013
Tipo del documento:
Article
País de afiliación:
Suiza