Page 157 - Assessing right ventricular function and the pulmonary circulation in pulmonary hypertension Onno Anthonius Spruijt

Control subjects were significantly younger than PH patients (20 ± 1 and 54 ± 16 p<0.001). 40% of the control subjects were female. Heart rate (HR) was not significantly different between control subjects (74 ± 11bpm) and PH patients (79 ± 14bpm).
Native T1-values in PH patients and control subjects
In PH patients, native T1-values of the interventricular insertion regions (1060 ± 70ms) were significantly higher than the native T1-values of the RV free wall, LV free wall and interventricular septum (figure 2 and 3).
Figure 2: Native T1-values(ms) of the RV free wall, LV free wall, interventricular septum and the interventricular insertion regions. Data is presented as mean and standard error of the mean. A: Regional differences in the myocardium of control subjects. No regional differences were found in control subjects. B: Regional differences in the myocardium of PH patients. T1-values of the RV free wall of PH patients were not different from T1-values of the LV free wall and interventricular septum. * = T1-values of the interventricular septum of PH patients were significantly higher compared to native T1-values of the LV free wall. # = Native T1- values of the interventricular insertion regions of PH patients were significantly higher compared to native T1-values of the RV free wall, LV free wall and interventricular septum.
Native T1-values of the RV free wall (996 ± 69ms) were not significantly different from the native T1- values of the LV free wall (977 ± 60ms) and interventricular septum (1009 ± 48ms). Native T1-values of the LV free wall were significantly lower than the native T1-values of the interventricular septum. In control subjects, no differences were found between native T1-values of the LV free wall (961 ± 26ms), interventricular septum (958 ± 23ms) and interventricular insertion regions (957 ± 27ms) (figure 2).
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