The associations between the categorized RVEF and echocardiographic parameters were investigated using several ordinal logistic regression models: there were significant associations between the RV function and average strain of the cardiac segments (Table 4).
Considering CMR as the gold standard, RVEF <30% was defined as severe RV dysfunction.
(20) found a positive correlation between TAPSE and RVEF measured by CMR.
Cut-off points of systolic strain and peak SR at the basal RVFW of 25% and -4 sec-1 have been previously suggested for a preserved global RV systolic function (RVEF [greater than or equal to] 50%) with sensitivities of 81% and 85% and specificities of 82% and 88%, respectively (25, 26).
There was no significant correlation between the RVEF in CMR and Sm in our study (p=0.297).
The remaining patient, who had an RVEF above 47%, experienced a major bleeding complication requiring admission to an ICU, but this patient eventually recovered.
For the identification of patients at risk for adverse outcomes, ECG-synchronized MDCT evaluation of RVEF less than 47% had an associated odds ratio of 13.3, sensitivity of 90% (56%-99.8%), specificity of 60% (50%-70%), negative predictive value of 98% (92%-99.9%), and positive predictive value of 18% (8.4%-31%).