Validation of inter-atrial conduction time measurement by means of echo-Doppler
Arch. cardiol. Méx
;
72(2): 125-128, abr.-jun. 2002.
Article
in English
| LILACS
| ID: lil-329838
ABSTRACT
BACKGROUND:
Little is known about the correlation between the inter-atrial conduction time (IACT) measured at the electrophysiology laboratory and the interval measured from the beginning of the electrocardiographic P wave to the initiation of the A wave in the mitral Doppler signal (P-A interval).HYPOTHESIS:
IACT can be assessed by means of echo-Doppler.METHODS:
We studied 21 patients who were referred to our arrhythmia clinic for evaluation of supraventricular tachycardia. During the electrophysiological study, the IACT was measured from the first rapid deflection of the A wave recorded with the high right atrial catheter to the A wave recorded with the coronary sinus catheter. An independent observer measured the P-A interval. Both the electrophysiological and echo-Doppler measurements were corrected for heart rate.RESULTS:
P-A interval was slightly longer than IACT (83.36 +/- 23.91 vs 80.77 +/- 24.11 msec; p = 0.042), but a very good correlation was found between both measurements (r2 = 0.94).CONCLUSIONS:
IACT can be non-invasively assessed by measuring the P-A interval.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Tachycardia, Supraventricular
/
Echocardiography, Doppler
/
Heart Atria
/
Heart Conduction System
Type of study:
Diagnostic study
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
English
Journal:
Arch. cardiol. Méx
Journal subject:
Cardiology
Year:
2002
Type:
Article
Affiliation country:
Venezuela
Institution/Affiliation country:
University of The Andes/VE
Similar
MEDLINE
...
LILACS
LIS