Female sex was associated with more abnormal sPAP (p=0.038) and RV S' (p=0.0178) than male sex, but there was no significant difference in the primary RV-PA coupling index.
Observational (n=243)
There are significant sex-related differences in pulmonary pressure indices and RV systolic parameters, but not in the primary RV-PA coupling index.
ABSTRACT Background Right‐ventricular–pulmonary arterial (RV–PA) coupling reflects the relationship between RV contractility and pulmonary vascular load and is a key determinant of cardiopulmonary performance. The tricuspid annular plane systolic excursion‐to‐pulmonary artery systolic pressure ratio (TAPSE/sPAP) provides a noninvasive estimate of RV–PA coupling. However, sex‐related differences in its relationship with pulmonary pressure remain unclear. Objective To evaluate sex‐related differences in pulmonary pressure, diastolic load, RV systolic function, and RV–PA coupling. Methods We conducted a retrospective analysis of echocardiographic data from 243 adults. Pulmonary pressure was assessed using systolic (sPAP), mean (mPAP), and diastolic (dPAP) measurements. RV function was evaluated using TAPSE and RV S′ velocity, and diastolic load using the E/e′ ratio and estimated PCWP. RV–PA coupling was estimated using TAPSE/sPAP and RV S′/sPAP ratios. Categorical variables ( n = 193) were analyzed using Fisher's exact test, and continuous variables using correlation and regression analyses. Results Females exhibited a higher prevalence of abnormal sPAP ( p = 0.038) and E/e′ ( p < 0.001), whereas males had a higher prevalence of abnormal mPAP ( p < 0.001) and PCWP ( p = 0.0016). Abnormal RV S′ was more frequent in females ( p = 0.0178). TAPSE and RV S′ were inversely correlated with pulmonary pressure ( ρ ≈ −0.45 to −0.55, p < 0.001). Regression analysis demonstrated a significant sex × pulmonary pressure interaction. Conclusions Sex‐related differences were observed in pulmonary pressure indices and RV systolic parameters; however, no significant difference was found in the primary RV–PA coupling index. These findings are associative and hypothesis‐generating.
AlRahimi et al. (Sat,) conducted a observational in Right ventricular function and RV-PA coupling (n=243). Female sex vs. Male sex was evaluated on Primary RV-PA coupling index. Female sex was associated with more abnormal sPAP (p=0.038) and RV S' (p=0.0178) than male sex, but there was no significant difference in the primary RV-PA coupling index.