• Celestino Sardu, Pasquale Paolisso, Cosimo Sacra, Matteo Santamaria, Claudio de Lucia, Antonio Ruocco, Ciro Mauro, Giuseppe Paolisso, Maria Rosaria Rizzo, Michelangela Barbieri, and Raffaele Marfella.
• Department of Medical, Surgical, Neurological, Metabolic and Aging Sciences, University of Campania "Luigi Vanvitelli", Piazza Miraglia, 2, 80138, Naples, Italy. drsarducele@gmail.com.
• Cardiovasc Diabetol. 2018 Oct 22; 17 (1): 137.

ObjectivesTo evaluate clinical outcomes in patients with diabetes, treated by cardiac resynchronization therapy with a defibrillator (CRT-d), and glucagon-like peptide 1 receptor agonists (GLP-1 RA) in addition to conventional hypoglycemic therapy vs. CRTd patients under conventional hypoglycemic drugs.BackgroundPatients with diabetes treated by CRTd experienced an amelioration of functional New York Association Heart class, reduction of hospital admissions, and mortality, in a percentage about 60%. However, about 40% of CRTd patients with diabetes experience a worse prognosis.Materials And MethodsWe investigated the 12-months prognosis of CRTd patients with diabetes, previously treated with hypoglycemic drugs therapy (n 271) vs. a matched cohort of CRTd patients with diabetes treated with GLP-1 RA in addition to conventional hypoglycemic therapy (n 288).ResultsAt follow up CRTd patients with diabetes treated by GLP-1 RA therapy vs. CRTd patients with diabetes that did not receive GLP-1 RA therapy, experienced a significant reduction of NYHA class (p value < 0.05), associated to higher values of 6 min walking test (p value < 0.05), and higher rate of CRTd responders (p value < 0.05). GLP-1 RA patients vs. controls at follow up end experienced lower AF events (p value < 0.05), lower VT events (p value < 0.05), lower rate of hospitalization for heart failure worsening (p value < 0.05), and higher rate of CRTd responders (p value < 0.05). To date, GLP-1 RA therapy may predict a reduction of AF events (HR 0.603, CI [0.411-0.884]), VT events (HR 0.964, CI [0.963-0.992]), and hospitalization for heart failure worsening (HR 0.119, CI [0.028-0.508]), and a higher CRT responders rate (HR 3.707, CI [1.226-14.570]).ConclusionsGLP-1 RA drugs in addition to conventional hypoglycemic therapy may significantly reduce systemic inflammation and circulating BNP levels in CRTd patients with diabetes, leading to a significant improvement of LVEF and of the 6 min walking test, and to a reduction of the arrhythmic burden. Consequently, GLP-1 RA drugs in addition to conventional hypoglycemic therapy may reduce hospital admissions for heart failure worsening, by increasing CRTd responders rate. Trial registration NCT03282136. Registered 9 December 2017 "retrospectively registered".

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