Correlation Between Modified Weakness Index and Postoperative Delirium in Elderly Patients

Exclusion Criteria

• •1. Refuse to participate;
• •2. Expected length of stay \<3 days;
• •3. The same patient can only be included once, regardless of whether the reason for the second operation is related to the first cause;
• •4. Emergency surgery patients;
• •5. Inability to communicate due to illiteracy, language impairment, severe hearing or visual impairment;
• •6. Central nervous system diseases, including various types of dementia and depression
• •7. Severe renal insufficiency (requiring dialysis treatment);
• •8. Severe liver dysfunction (Child-Pugh score ≥10);
• •9. Patients who have participated in other relevant clinical studies within 3 months MMSE examination has confirmed the existence of cognitive dysfunction: illiteracy ≤17 points, primary school degree ≤20 points, middle school degree (including technical secondary school) ≤22 points, university degree (including junior college) ≤23 points