Correlation Between Modified Weakness Index and Postoperative Delirium in Elderly Patients

Study Overview
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Brief Summary
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To study whether there is a correlation between weakness and postoperative delusions in elderly non-cardiac surgery patients Can the improved debilitating index predict the delusion after non-cardiac surgery Which of the debilitating index are independent risk factors associated with postoperative delusions

Detailed Description
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Early identification of frailty patients is of great clinical significance for preoperative decision making and prognosis assessment. To date, the incidence of postoperative delirium in elderly patients undergoing noncardiac surgery has not been assessed. This study aimed to investigate the relationship between preoperative frailty assessment and the incidence of postoperative delirium after noncardiac surgery. To study whether there is a correlation between weakness and postoperative delusions in elderly non-cardiac surgery patients Can the improved debilitating index predict the delusion after non-cardiac surgery Which of the debilitating index are independent risk factors associated with postoperative delusions

Official Title
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Correlation Between Modified Weakness Index and Postoperative Delirium in Elderly Patients Undergoing Non-cardiac Surgery: a Single-center Prospective Observational Cohort Study

Conditions
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Frailty

Intervention / Treatment
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* Other: No intervention


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age ≥ 70 years old; ASA: Grade Ⅰ～Ⅳ; Signed informed consent； Scheduled non-cardiac surgery. Exclusion Criteria: Refuse to participate; Expected length of stay <3 days; The same patient can only be included once, regardless of whether the reason for the second operation is related to the first cause; Emergency surgery patients; Inability to communicate due to illiteracy, language impairment, severe hearing or visual impairment; Central nervous system diseases, including various types of dementia and depression Severe renal insufficiency (requiring dialysis treatment); Severe liver dysfunction (Child-Pugh score ≥10); 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

Ages Eligible for Study
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Minimum Age: 70 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| frailty group<br>Modified Frailty index score greater than or equal to 0.21 | Other: No intervention<br>* No intervention<br>|
| non-frailty group<br>Modified Frailty index score is less than 0.21 | Other: No intervention<br>* No intervention<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Postoperative Delirium | Incidence of postoperative delirium after noncardiac surgery.Postoperative delirium usually occurs between 24 hours and 72 hours after surgery, and this study will conduct follow-up assessments at six postoperative time points (once in the morning and afternoon on days 1 to 3 after surgery, 8:00 a.m.-10:00 a.m., 18:00-20:00 pm), as long as there was one time point to assess postoperative delirium, the patient was judged to have developed postoperative delirium. | Twice a day from day 1 to 3 after surgery (8:00-10:00 am and 18:00-20:00 PM). | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence of 30-day readmission to hospital | Incidence of 30-day readmission to hospital | Within 30 days after surgery | 
| complications | Patients were followed up 30 days later for complications | Within 30 days after surgery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Frailty POD