The efficacy and safety of dapagliflozin in pediatric heart failure.

BACKGROUND

SGLT2 inhibitors (SGLT2i) have consolidated their position as first-line therapeutic agents in adult heart failure. However, there is minimal data on pediatric population. We conducted an observational study to evaluate efficacy and safety of Dapagliflozin in pediatric heart failure.

METHODS

Patients less than 19 years with heart failure on SGLT2i for more than thirty days were included. The primary objective was to study composite outcomes of worsening heart failure, heart transplantation, and mortality at 6-months follow-up. Secondary objectives included individual components of primary outcome, changes in functional class, cardiothoracic ratio, LV dimensions, ejection fraction, NT-ProBNP at 6 months, and to study adverse events.

RESULTS

Forty-nine children were studied, median (IQR) age was 11 (6-15) years, and 57 % were males. Most common etiology was dilated cardiomyopathy(47 %), followed by congenital heart diseases (37 %). 96 % were on RAAS inhibitors, 92 % on mineralocorticoid receptor blockers and 78 % on beta blockers. Primary outcome was seen in 34 %. The mortality rate was 18 %. LVEF increased from 35 % to 40 % (p-value 0.02). Median NT-ProBNP levels reduced from 2606 pg/ml to 1110 pg/ml (P-value 0.07). Significant improvement in functional class was noted. Two patients on follow-up successfully underwent heart transplants and are doing well. Major adverse events like acute kidney injury, hypotension or anaphylaxis were not reported. Genital candidiasis and sterile pyuria were documented in four children.

CONCLUSION

The addition of SGLT2i to goal-directed medical therapy in children with heart failure was associated with significantly improved LVEF and symptom profile and demonstrated a good safety profile.