Why the study?
Does real-time cardiovascular magnetic resonance exercise testing reveal the mechanisms of impaired exercise capacity in patients with corrected tetralogy of Fallot compared to healthy controls?
Population
33 patients with corrected tetralogy of Fallot (cTOF) and 35 matched healthy controls
Comparison
Cardiopulmonary exercise testing and real-time… vs Matched healthy controls undergoing the same…
Design
Case-control
Key result
Patients with repaired tetralogy of Fallot exhibited significantly lower exercise capacity, reduced pulmonary blood flow, and impaired biventricular function compared to healthy controls.
Authors
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LV contractile reserve during exercise may contribute to cTOF intolerance; extends RV-centric models but remains hypothesis-generating for PVR stratification.
Case-Control (n=68)
Does real-time cardiovascular magnetic resonance exercise testing reveal the mechanisms of impaired exercise capacity in patients with corrected tetralogy of Fallot compared to healthy controls?
Impaired exercise capacity in corrected tetralogy of Fallot is associated with both right and left ventricular dysfunction, suggesting CMR-ET-derived LV function could help stratify patients for pulmonary valve replacement.
Steinmetz et al. (2021) conducted a case-control in Repaired Tetralogy of Fallot (n=68). Repaired Tetralogy of Fallot vs. Matched healthy controls was evaluated on Cardiopulmonary exercise capacity and biventricular function on CMR-ET. Patients with repaired tetralogy of Fallot exhibited significantly lower exercise capacity, reduced pulmonary blood flow, and impaired biventricular function compared to healthy controls.