Electrophysiological validation of total atrial conduction time measurement by tissue doppler echocardiography according to age and sex in healthy adults.
BACKGROUND
We sought to validate total atrial conduction time (TACT) measurement via tissue Doppler imaging (TDI) by comparing the electrophysiological study (EPS) measurements of healthy subjects, according to age and sex.


METHODS
Eighty patients with normal EPS results were included. TACT was measured by EPS and TDI. For validation, the results of TDI were compared with those of EPS. TACT was assessed by measuring the time interval between the beginning of the P-wave on the surface ECG, and the peak A-wave on TDI from the left atrial lateral wall, just over the mitral annulus. Electrophysiological TACT was defined as the time from the high right atrial electrogram to the distal coronary sinus atrial electrogram around the left lateral portion of the mitral ring.


RESULTS
EPS and TDI measurements of the TACT were significantly and positively correlated among men and women in 20-30 years (p=0.008, r=0.412; p>0.001, r=0.706, respectively), and those in the 30-40 years group (p=0.001, r=0.649; p=0.001, r=0.696). In contrast, EPS and TDI measurements of TACT were not significantly different among men and women in the 20-30 years and those in the 30-40 years group (p>0.05, for both). On univariate regression analyses, TACT was independently associated with age (β=0.342, =0.001).


CONCLUSIONS
When assessed according to the age and sex of healthy participants, TDI and EPS measurements during TACT assessments were similar and correlated with each other. The measurement of TACT via TDI may be used accurately and confidently than the measurement via EPS in healthy individuals.
Abant Izzet Baysal University, Izzet Baysal Education and Research Hospital, Department of Cardiology, 14280 Bolu, Turkey.
Fatma Hizal
FH
Erdem
Abant Izzet Baysal University, Izzet Baysal Education and Research Hospital, Department of Cardiology, 14280 Bolu, Turkey.
Alim
A
Erdem
Abant Izzet Baysal University, Izzet Baysal Education and Research Hospital, Department of Cardiology, 14280 Bolu, Turkey.
Fatih
F
Özlü
Abant Izzet Baysal University, Izzet Baysal Education and Research Hospital, Department of Cardiology, 14280 Bolu, Turkey.
Serkan
S
Ozturk
Abant Izzet Baysal University, Izzet Baysal Education and Research Hospital, Department of Cardiology, 14280 Bolu, Turkey.
Suzi Selim
SS
Ayhan
Abant Izzet Baysal University, Izzet Baysal Education and Research Hospital, Department of Cardiology, 14280 Bolu, Turkey.
Sabri Onur
SO
Çağlar
Abant Izzet Baysal University, Izzet Baysal Education and Research Hospital, Department of Cardiology, 14280 Bolu, Turkey.
Mehmet
M
Yazici
Electrophysiological study; Tissue Doppler imaging; Total atrial conduction time; Validation