Right ventricular long‐axis function in relation to left ventricular systolic function

Abstract

A decrease in left ventricular (LV) systolic function is accompanied by a decrease in maximal relaxation velocity in LV long-axis direction, but is it also accompanied by a decrease in right ventricular (RV) long-axis function? To study this 35 consecutive patients were examined by echocardiography. Ejection fraction (LVEF) and mitral annulus motion (MAM) were used as indices of LV systolic function and tricuspid annulus motion (TAM), that is the systolic shortening in RV long-axis direction, was used as an index of RV systolic long-axis function. In the same way the maximal relaxation velocity in LV long-axis direction, that is the maximal diastolic velocity of MAM (MDV MAM), has been suggested as an index of LV diastolic function the maximal diastolic velocity of TAM (MDV TAM) can be supposed to be an index of RV diastolic function measuring the maximal relaxation velocity in the RV long-axis direction. A significant positive correlation was found between MDV TAM and MAM (r = 0.64, P<0001) and LVEF (r = 0.54, P = 0.001) and between TAM and the two studied indices of LV systolic function, with the highest correlation to MAM (r = 0.68, P<0.001) and the lowest to LVEF (r = 0.57, P<0.001). Thus, a decrease in LV systolic function is accompanied by a decrease in both systolic and diastolic RV long-axis function, findings that probably are due to the close anatomical connection between the ventricles and to changes that occur in afterload of the RV secondary to LV systolic dysfunction.

Spontaneous left atrial echo contrast, mitral annular systolic velocity, and left atrial appendage late emptying velocity in predicting improvement of left atrial function after percutaneous balloon mitral valvuloplasty

“…Furthermore, mitral annular movement contributes to LA filling by creating a suction effect during systole and it contributes to LA emptying by decreasing LA volume during diastole. [12][13][14] In our study, the LAAEV pre-PBMV was lower than normal, and we found a significant increase in LAAEV post-PBMV. Similar to our study, Tatani S.B et al 16 found a significant improvement of the left appendicular flow after PBMV.…”

“…Mitral annulus has an important role for LA and left ventricular (LV) function by moving throughout LV long axis. [12][13][14] In patients with MS, LV, LA, and LAA functions are impaired and the excursion of mitral annulus is reduced due to scarring and inflammatory processes. 15 The LV long-axis function which is a useful echocardiographic index of LV systolic function can be evaluated by measuring Sawave velocity obtained by TDI.…”

The right ventricle in Fabry disease

“…Although Fabry disease‐related infiltrative hypertrophic cardiomyopathy has been clearly described in terms of LV involvement 4,7–10, to date RV findings have not been examined in detail. This study has shown that RV involvement is common and affects more than one‐third of all patients with Fabry disease.…”

Left and right ventricular systolic long-axis function and diastolic function in patients with takotsubo cardiomyopathy

“…, 2002) at the lateral site. The maximal relaxation velocity of the tricuspid annulus was measured in the same way (Emilsson, 2004).…”

“…The maximal relaxation velocity of the mitral annulus was measured as the steepest part of the curve in early diastole (Nilsson et al, 2002) at the lateral site. The maximal relaxation velocity of the tricuspid annulus was measured in the same way (Emilsson, 2004).…”