Why the study?
Does the pre-atrial electrical activity recorded by a catheter electrode correlate with sino-atrial conduction time and help evaluate sino-atrial function?
Does the pre-atrial electrical activity recorded by a catheter electrode correlate with sino-atrial conduction time and help evaluate sino-atrial function?
The pre-A interval obtained by an averaging technique correlates significantly with SACT and provides a simple, safe, and reliable method for evaluating sino-atrial function.
1) In canine experiment, the averaging of high right atrial electrical activity revealed the pre-A preceding the atrial deflection, which was proven to be a part of the electrical activity of sinus nodal region. 2) The pre-A was obtained in 114 (75%) of 153 clinical cases. 3) The mean pre-A interval was 18 +/- 4 msec in control group, and was prolonged in cases with sick sinus syndrome, ischemic heart disease and myocarditis. 4) The significant correlation existed between the pre-A interval and the SACT by Strauss' method (r = 0.80, p < 0.01). 5) The pre-A obtained by averaging technique is relatively simple, safe and reliable method, and is useful for evaluating the sino-atrial function.
No takes yet. Share an insight, caveat, or question.
Hosoda et al. (1980) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: