Left Ventricular Systolic and Diastolic Dyssynchrony in Asymptomatic Hypertensive Patients

Early diastolic dyssynchrony in relation to left ventricular remodeling and function in hypertension

“…The determinants of LV systolic dyssynchrony are not the same as those of diastolic dyssynchrony, implying that different mechanisms are involved in the development of LV systolic and diastolic dyssynchronies in asymptomatic patients with hypertension [19].…”

Effect of Biventricular Pacing on Diastolic Dyssynchrony

“…Maximal peak systolic myocardial velocity within this ejection period was selected, and the time interval between the onset of the QRS complex and the peak systolic velocity (maximal systolic electromechanical delay) per region was derived as previously described (4,19,20). Similarly, maximal diastolic electromechanical delay for each region was obtained using the peak early diastolic myocardial velocity (21)(22)(23). Intraventricular dyssynchrony was determined using the time difference between the shortest and longest electromechanical delays between any 2 out of 4 basal LV segments during systole and early diastole.…”

The evaluation of left ventricular dyssynchronization in patients with hypertension by phase analysis of myocardial perfusion-gated SPECT

“…Mechanism of ventricular dyssynchrony is not clear exactly, but some authors pointed out various mechanisms about ventricular dyssynchrony patients with hypertension. Chang et al [24] suggest that ventricular dyssynchrony is associated with left ventricle filling pressure; however, Tan et al [25] suggest that it is associated with left ventricular hypertrophy directly. Kwon et al [26] argue that serum electrolyte levels like potassium were independently correlated with LV systolic dyssynchrony in the hypertensive patients.…”