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OBJECTIVE The aim of this study was to describe rates and characteristics of non-elective 30-day readmission among patients hospitalized for adrenal insufficiency and to assess predictors of readmission. DESIGN We analysed the 2018 National Readmission Database. Adrenal insufficiency hospitalizations were identified using the International Classification of Diseases, Tenth Revisions, Clinical Modification diagnosis codes for principal diagnostic codes of primary adrenal insufficiency, Addisonian crisis, drug-induced adrenocortical insufficiency, and other and unspecified adrenocortical insufficiency. PATIENTS During the study period, 7738 index hospitalizations were identified as patients with AI who met the inclusion criteria. Of these, 7691 were discharged alive. MEASUREMENTS We utilized chi-squared tests to compare baseline characteristics between readmissions and index hospitalizations. Multivariate Cox regression was used to identify independent predictors of readmission. RESULTS The 30-day all-cause readmission rate for AI was 17.3%. About 1 in 5 readmissions was for AI. Other reasons for readmission included sepsis (10.8%), unspecified pneumonia (3.1%) and acute renal failure unspecified (1.6%). Readmission was associated with significantly higher odds of inpatient mortality. Independent predictors of 30-day all-cause readmissions included index hospitalizations with the Charlson Comorbidity Index (CCI) ≥3 (adjusted hazards ratio (aHR): 2.53, 95% CI: 1.85-3.46, p

INTRODUCTION Diabetic ketoacidosis (DKA) is a known complication of patients with diabetes mellitus. The aim of this study was to compare the outcomes of patients admitted with a diagnosis of DKA with, and without, diastolic heart failure (DHF). METHODS This was a population-based, retrospective, observational study using data from the National Inpatient Sample database for the years 2016 and 2017. The primary outcome was in-hospital mortality. Secondary outcomes were rates of sepsis, non-ST elevation myocardial infarctions (NSTEMI), acute kidney failure, acute respiratory failure (ARF), deep vein thrombosis, pulmonary embolism, mean length of hospital stay (LOS) and total hospital charges (THC). RESULTS There was no statistically significant difference for the adjusted odds for in-hospital mortality between patients with and without DHF (adjusted odds ratio [aOR]: 0.55, 95% confidence interval [CI] 0.28-1.08, p = 0.081). Patients with DKA and DHF had increased odds of developing an NSTEMI (aOR: 1.31, 95% CI: 1.01-1.70, p = 0.045) or ARF (aOR: 1.82, 95% CI: 1.38-2.40, p