Sodium-glucose cotransporter-2 inhibitor use in patients with a Fontan circulation

BACKGROUND: Sodium-glucose cotransporter-2 inhibitors reduce cardiovascular outcomes in patients with congestive heart failure and a biventricular circulation. Congestive heart failure in Fontan univentricular circulation is distinctly different. Experience with sodium-glucose cotransporter-2 inhibitors in this group has not yet been well described. OBJECTIVES: This work describes safety and tolerability of sodium-glucose cotransporter-2 inhibitors in patients with Fontan circulation. METHODS: Single-centre review of patients with Fontan circulation prescribed a sodium-glucose cotransporter-2 inhibitors for congestive heart failure. Primary outcome was tolerability or need for discontinuation. Secondary outcomes were changes in New York Heart Association class, congestive heart failure hospitalisation, ventricular function, exercise performance, and laboratory values. CONCLUSION: This series, the largest published to date, suggests that sodium-glucose cotransporter-2 inhibitors are safe and tolerable congestive heart failure therapy in Fontan circulation. Further research is warranted to explore therapy in this unique population.