Doppler Tissue Evaluation of Intra-atrial and Interatrial Electromechanical Delay and Comparison with P-wave Dispersion in Patients with Mitral Stenosis

Relationships between P wave dispersion, atrial electromechanical delay, left atrial remodeling, and NT-proBNP levels, in patients with hypertrophic cardiomyopathy

“…In our study, both PWD and inter-atrial dyssynchrony were correlated with all phasic LAVs. Our findings are similar to those of previous studies evaluating patients with mitral stenosis [17], and sinus node disease without structural heart disease [19]. The positive correlation between phasic LAVs, and PWD and atrial dyssynchrony, may suggest that these two AF predictors are affected by LA structural remodeling.…”

“…However, only a few studies have evaluated the relationship between PWD and atrial dyssynchrony. A positive correlation between inter-atrial electromechanical delay and PWD was shown in patients with mitral stenosis [17]. A strong correlation between the signal-averaged P-wave duration and total atrial activation time (defined as the time interval from the beginning of the P-wave on the ECG until the peak of the tissue A'-wave in the lateral LA wall) was found by Merckx et al [18] in subjects during SR. A recent study focusing on the relationship between Pdur and atrial EMD in patients with sinus node disease, who were in different atrial pacing modalities, found that, upon univariate analysis, all parameters, except for RA dyssynchrony, correlated positively with the Pdur while, upon multivariate analysis, Pdur was associated only with the electromechanical delay in the lateral LA wall [19].…”

Tissue Doppler echocardiography can be a useful technique to evaluate atrial conduction time

“…Ozer et al [23] found that interatrial electromechanical delay is longer in patients with mitral stenosis than in control subjects. In a previous study, we also demonstrated that ILCT and IACT is increased in patients with hypertension with diastolic dysfunction [24].…”

Physiological Values of P-Wave Dispersion in Silesian Breed Horses and Polish Primitive Horses

“…In human medicine changes in P-wave duration and dispersion were only observed in disorders related to the atria. An increase in P-wave dispersion is observed during ischaemic heart disease, dilated cardiomyopathy, coronary slow flow, stricture of the left atrioventricular ostium opening, hypertension, and some congenital defects like pulmonary stenosis (8,9,12,13,(18)(19)(20). An increase in this parameter was also observed in patients with a diastolic dysfunction; however, the increase was not in proportion to the severity of the disease (8).…”