Liraglutide in Preventing Delirium in Diabetic Elderly After Cardiac Surgery

Inclusion Criteria: 1. Age ≥ 60 years 2. Type 2 diabetes 3. Patients undergoing elective cardiac surgery Exclusion Criteria: 1. History of neurological or psychiatric disorders, such as schizophrenia, epilepsy, Parkinson's disease, severe dementia, etc 2. Patients with communication difficulties, such as severe visual, auditory, or speech impairments 3. History of central nervous system damage or surgery 4. Cardiac function NYHA Class IV 5. Severe liver dysfunction (Child-Pugh Class C) 6. Severe renal failure requiring renal replacement therapy 7. History of pancreatitis 8. Type 1 diabetes 9. Patients whose blood sugar is difficult to control within 4-8 mmol/L during the screening period 10. Patients with medullary thyroid carcinoma or a family history of it 11. Pregnant or breastfeeding women 12. Intolerance or allergy to liraglutide 13. Previous use of GLP-1A and SGLT2i 14. Patients who refuse to sign the informed consent