Abstract
AIMS: To explore the effects of dapagliflozin on congestion through CardioMEMS (Abbott Inc., Atlanta, USA) and Cordella™ pulmonary artery Sensor (Endotronix Inc., Lisle, Il, USA) devices, which are implantable systems that provide real-time remote monitoring of pulmonary artery pressure (PAP). METHODS AND RESULTS: Single-centre open label observational pilot trial, to investigate the short-term effects of dapagliflozin in consecutive heart failure and reduced ejection fraction patients with elevated PAP between October and December 2019, previously implanted with CardioMEMS or Cordella™ Sensor. Changes in PAP were evaluated with an area under the curve methodology to estimate the total sum increase or decrease in pressures (mmHg/day) for 7 days before and after starting dapagliflozin relative to the first day of each period. Nine patients (72 ± 10 years, N-terminal pro b-type natriuretic peptide 1027 ± 510 pg/mL, estimated glomerular filtration rate 45 ± 15 mL/kg/m2, left ventricular ejection fraction 35 ± 10%), all on optimal guideline-directed therapy was included. The mean PAP was reduced from 42 ± 9.16 to 38 ± 9.95 mmHg with dapagliflozin therapy (P < 0.05). The average area under the curve for the week leading to dapagliflozin therapy remained unchanged compared to the drop observed for the week after therapy (P < 0.05). Interestingly, the drop in PAP occurred within the first 2 days of dapagliflozin and remained stable for the week following the start of the therapy. CONCLUSIONS: This is the first study to demonstrate a direct effect of dapagliflozin on achieving effective hemodynamic decongestion, providing further mechanistic data regarding the potential mechanisms of sodium-glucose co-transporter-2 inhibitor benefits on heart failure.