Background: Advances in medical care of patients with tetralogy of Fallot (ToF) have significantly altered the natural course of the disease by prolonging life. Thus, our focus has now shifted to exploring the health-related quality of life (HRQoL) of those patients. This study sought to explore the HRQoL of adult patients operated on for ToF using two validated instruments—the SF-36 and EQ-5D—that highlight both physical and mental aspects of the disease. Methods: A total of 115 individuals (53 ToF patients and 60 healthy controls) were recruited for the purposes of this study. HRQoL was assessed through the SF-36 and EQ-5D instruments. Comparisons were made between ToF patients and controls with subgroup analyses based on sex and age. Results: ToF patients reported significantly poorer HRQoL in the physical domains, namely Physical Functioning, Role Physical, General Health, and Physical Component Summary of the SF-36 when compared to controls (p < 0.05). Interestingly, there was a trend towards lower Bodily Pain and better Vitality scores in ToF subjects. Age influenced HRQoL, with older respondents rating their physical health lower than younger patients and controls (p < 0.05). EQ-5D VAS scores indicated that ToF patients perceived their overall health worse than controls (80.02 vs. 86.92, p < 0.001), with Anxiety/Depression being the most frequently reported problem (45.3%). Controls reported better HRQoL than ToF patients across all SF-36 domains in both health states (EQ-5D = 1 and EQ-5D > 1), except for Bodily Pain and Vitality in EQ-5D = 1. Significant differences were observed in Physical Functioning, Role Physical, General Health, Vitality, and Physical Component Score. Notably, ToF patients with EQ-5D = 1 showed unexpectedly higher Vitality scores than controls; however, this advantage diminished significantly in the EQ-5D > 1 group. Conclusions: Adult ToF survivors experience significant physical limitations as expected, while mental health seems to remain relatively unaffected compared to healthy peers. These findings underscore the importance of HRQoL assessment in patients with congenital heart disease and the need for disease-specific HRQoL instruments.

PurposeTetralogy of Fallot (TOF) is a congenital heart disease, and patients undergo surgical repair early in their lives. The evaluation of TOF patients is continuous through their adulthood. The use of cardiac magnetic resonance imaging (CMR) is vital for the evaluation of TOF patients. We aim to correlate advanced MRI sequences [parametric longitudinal relaxation time (T1), extracellular volume (ECV) mapping] with cardiac functionality to provide biomarkers for the evaluation of these patients.MethodsA complete CMR examination with the same imaging protocol was conducted in a total of 11 TOF patients and a control group of 25 healthy individuals. A Modified Look-Locker Inversion recovery (MOLLI) sequence was included to acquire the global T1 myocardial relaxation times of the left ventricular (LV) pre and post-contrast administration. Appropriate software (Circle cmr42) was used for the CMR analysis and the calculation of native, post-contrast T1, and ECV maps. A regression analysis was conducted for the correlation between global LV T1 values and right ventricular (RV) functional indices.ResultsStatistically significant results were obtained for RV cardiac index [RV_CI= −32.765 + 0.029 × T1 native; p=0.003], RV end diastolic volume [RV_EDV/BSA = −1023.872 + 0.902 × T1 native; p=0.001], and RV end systolic volume [RV_ESV/BSA = −536.704 + 0.472 × T1 native; p=0.011].ConclusionsWe further support the diagnostic importance of T1 mapping as a structural imaging tool in CMR. In addition to the well-known affected RV function in TOF patients, the LV structure is also impaired as there is a strong correlation between LV T1 mapping and RV function, evoking that the heart operates as an entity.