Clinical Research Directory

Inclusion Criteria: * Diagnosis of type 2 diabetes mellitus \> 3 months * Age≥18 years old * Receiving glucose-lowering management for at least 90 days * Blood glucose:7.8-22.2 mmol/L * Length of proposed hospitalisation ≥5 days. Exclusion Criteria: * Type 1 diabetes mellitus, other special types of diabetes mellitus * BG\>22.2 mmol/L, or acute complications of diabetes, such as diabetic ketoacidosis, diabetic hyperosmolar state * History of severe or repeated hypoglycaemia * BMI≥45 kg/m2 * Pregnant and lactating women * Clinically relevant liver disease (established cirrhosis and portal hypertension) * Presence of severe renal disease (serum creatinine ≥3.0 mg/dL or estimated glomerular filtration rate \<30 ml/min/1.73 m2) * Severe cardiac insufficiency * Patients undergoing corticosteroid therapy (equivalent to a prednisone dose \>5 mg/day) * Psychiatric abnormalities or impaired cognitive function * Patients with severe oedema, infection, or peripheral blood circulation disorder * Patients with severe illness or patients to be transferred to ICU for treatment * Surgery of the heart or abdomen that may have a significant impact on the test is planned during hospitalisation * Expected to be NPO for an extended period * Any medical or psychological conditions, or medications that, in the doctor's judgment, could interfere with the results * Subjects who cannot comply with the protocol.