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CTRI Number  CTRI/2025/09/094238 [Registered on: 04/09/2025] Trial Registered Prospectively
Last Modified On: 03/09/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Other 
Public Title of Study   How preoperative frailty and muscle weakness affect memory and thinking after surgery in older patients 
Scientific Title of Study   Preoperative frailty index and sarcopenia as predictors of postoperative cognitive dysfunction in elderly patients undergoing orthopedic surgery under spinal anaesthesia a prospective observational study. 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Divya S 
Designation  First Year Postgraduate 
Affiliation  Sri Venkateshwaraa Medical College Hospital and Research Centre 
Address  Department of Anaesthesiology, Main OT complex Room no.1,13-A,Pondy-Villupuram Main Road, Sri Venkateshwaraa Medical College Hospital and Research Centre, Ariyur, Puducherry.

Pondicherry
PONDICHERRY
605102
India 
Phone  9384942236  
Fax    
Email  email2divya97@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Krishnaprabu R 
Designation  Professor and HOD 
Affiliation  Sri Venkateshwaraa Medical College Hospital and Research Centre 
Address  Department of Anaesthesiology, Main OT complex, Room no.1, 13-A,Pondy-Villupuram Main Road, Sri Venkateshwaraa Medical College Hospital and Research Centre, Ariyur, Puducherry.

Pondicherry
PONDICHERRY
605102
India 
Phone  9943770977  
Fax    
Email  drkrishnaprabu@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Krishnaprabu R 
Designation  Professor and HOD 
Affiliation  Sri Venkateshwaraa Medical College Hospital and Research Centre 
Address  Department of Anaesthesiology, Main OT complex, Room no.1, 13-A,Pondy-Villupuram Main Road, Sri Venkateshwaraa Medical College Hospital and Research Centre, Ariyur, Puducherry.

Pondicherry
PONDICHERRY
605102
India 
Phone  9943770977  
Fax    
Email  drkrishnaprabu@gmail.com  
 
Source of Monetary or Material Support  
Sri Venkateshwaraa Medical College Hospital and Research Centre Department of Anaesthesiology, Main OT complex,Room no.1, 13-A,Pondy-Villupuram Main Road, Sri Venkateshwaraa Medical College Hospital and Research Centre, Ariyur, Puducherry. Pondicherry PONDICHERRY 605102 
 
Primary Sponsor  
Name  Dr Divya S 
Address  Sri Venkateshwaraa Medical College Hospital and Research Centre, 13-A,Pondy-Villupuram Main Road, Ariyur, Puducherry, India. 605102. 
Type of Sponsor  Other [Self] 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Divya S  Sri Venkateshwaraa Medical College Hospital and Research Centre  Department of Anaesthesiology, Main OT complex Room no.1,13-A,Pondy-Villupuram Main Road, Sri Venkateshwaraa Medical College Hospital and Research Centre, Ariyur, Puducherry.
Pondicherry
PONDICHERRY 
9384942236

email2divya97@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee (Human Studies)  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: F05||Delirium due to known physiological condition,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  65.00 Year(s)
Age To  99.00 Year(s)
Gender  Both 
Details  1.Scheduled to undergo elective orthopaedic surgery under spinal anaesthesia.
2.Age 65 years and above
3.Belonging to American society of Anesthesiologists (ASA) class I, II, III
4.Able to provide informed consent
5.Had a baseline Addenbrooke’s Cognitive Examination-III (ACE-III) score of more than 88
 
 
ExclusionCriteria 
Details  1.Use of sedatives or conversion to general anaesthesia
2.Active alcohol abuse or chronic opioid/substance abuse
3.Pre-existing diagnosis of moderate to severe dementia or other major neurocognitive disorders.
4.History of psychiatric illness that may affect cognitive assessment (e.g., schizophrenia, major depression with psychosis).
5.Patients with neuromuscular disorders affecting hand grip strength (e.g., Parkinson’s disease, stroke with motor deficits).
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Association between preoperative frailty measured by 5-factor Modified Frailty Index 5mFI and postoperative cognitive dysfunction.  Association between preoperative frailty measured by 5-factor Modified Frailty Index 5mFI and postoperative cognitive dysfunction measured by ACE III preoperative baseline and 24 hours and 72 hours after surgery. 
 
Secondary Outcome  
Outcome  TimePoints 
Association between sarcopenia assessed by hand grip strength & post operative cognitive dysfunction.  Association between sarcopenia assessed by hand digital dynamometer & postoperative cognitive dysfunction measured by ACE III preoperative baseline & 24 hours & 72 hours after surgery.  
 
Target Sample Size   Total Sample Size="115"
Sample Size from India="115" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   15/09/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   This prospective observational study evaluates whether preoperative frailty 5mFI and sarcopenia hand grip strength predict postoperative cognitive dysfunction POCD in elderly patients undergoing orthopaedic surgery under spinal anaesthesia. Cognitive function will be assessed using Addenbrooke’s Cognitive Examination III ACE III preoperatively and at 24 & 72 hours postoperatively. The study aims to identify high-risk patients early, enabling targeted perioperative care and improved outcomes. 
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