Clinical characteristics of fulminant Type 1 diabetes mellitus.

Objectives: To compare the differences in clinical characteristics between Type 1 diabetes mellitus (T1DM) and fulminant Type 1 diabetes mellitus (FT1DM), and to reduce the missed diagnosis, misdiagnosis, and mistreatment of FT1DM by medical staff.

Methods: A total of 101 hospitalized patients with T1DM (including 8 cases of FT1DM) were enrolled in this study from Changsha Central Hospital between June 2012 and December 2018. Clinical characteristics of the 8 FT1DM patients were collected and compared with all T1DM patients.

Results: All FT1DM patients were adult with the average age of (30.25±5.28) years old, accompanied by severe diabetic ketoacidosis (DKA) occurred within 1 week after onset. Moreover, pancreatic beta cells in these patients were destroyed and the islet-related antibodies were negative, while the serum pancreatic enzyme levels were increased. Compared with classic T1DM patients, the plasma glucose levels in FT1DM patients were much higher [(41.89±12.54) mmol/L vs (22.57±9.74) mmol/L], but glycosylated hemoglobin (HbA1c) and fasting C peptide levels were significantly lower [(6.08±0.41)% vs (10.87±2.46%)%, 0.05] and [(0.02±0.00) nmol/L vs (0.03±0.06) nmol/L, <0.05].

Conclusions: The onset time of FT1DM patients is very urgent via driving DKA. These patients have higher blood glucose concentration than classic T1DM patients, accompanied by electrolyte disturbances, impaired renal function, partially impaired liver function, as well as gastrointestinal symptoms and elevated trypsin. Most FTDM patients are adolescents and adults with no gender difference, especially pregnant women who are at high risk. Lifelong insulin dependence in FT1DM patients should be paid more attention in clinical treatment.