Publications by authors named "C Marcelo Falappa"

Objective: We aimed to determine whether diabetes complications, such as kidney disease that may impair acid-base buffering capacity, independently predict the risk of subsequent diabetic ketoacidosis (DKA).

Research Design And Methods: We accessed previously collected 34-year data from the Diabetes Control and Complications Trial and Epidemiology of Diabetes Interventions and Complications study through public data access. Multivariable Cox proportional hazards models with time-varying exposures and covariates were used to examine the associations of macrovascular disease and early and late stages of neuropathy, nephropathy, and retinopathy, with subsequent DKA occurrence as the outcome.

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There is a need to optimize closed-loop automated insulin delivery in type 1 diabetes. We assessed the glycemic efficacy and safety of empagliflozin 25 mg d as add-on therapy to insulin delivery with a closed-loop system. We performed a 2 × 2 factorial randomized, placebo-controlled, crossover two-center trial in adults, assessing 4 weeks of closed-loop delivery versus sensor-augmented pump (SAP) therapy and empagliflozin versus placebo.

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Aim: To assess whether adding empagliflozin to closed-loop automated insulin delivery could reduce the need for carbohydrate counting in type 1 diabetes (T1D) without worsening glucose control.

Materials And Methods: In an open-label, crossover, non-inferiority trial, 30 adult participants with T1D underwent outpatient automated insulin delivery interventions with three random sequences of prandial insulin strategy days: carbohydrate counting, simple meal announcement (no carbohydrate counting) and no meal announcement. During each sequence of prandial insulin strategies, participants were randomly assigned empagliflozin (25 mg/day) or not, and crossed over to the comparator.

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Objectives: To better understand the dawn phenomenon in type 1 diabetes, we sought to determine its prevalence, timing and magnitude in studies specifically designed to assess basal insulin requirements in patients using insulin pumps.

Methods: Thirty-three participants from 2 sensor-augmented insulin pump studies were analyzed. Twenty participants were obtained from a methodologically ideal semiautomated basal analysis trial in which basal rates were determined from repeated fasting tests (the derivation set) and 13 from an artificial pancreas trial in which duration of fasting was variable (the "confirmation" set).

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Context: The added benefit of glucagon in artificial pancreas systems for overnight glucose control in type 1 diabetes has not been fully explored.

Objective: The objective of the study was to compare the efficacy of dual-hormone (insulin and glucagon) artificial pancreas, single-hormone (insulin alone) artificial pancreas, and conventional insulin pump therapy.

Design: This study was a three-center, three-arm, open-label, randomized, crossover controlled trial involving three interventions, each applied over a night after a high carbohydrate/high fat meal and a second after exercise to mimic real-life glycemic excursions.

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