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CTRI Number  CTRI/2025/04/084610 [Registered on: 11/04/2025] Trial Registered Prospectively
Last Modified On: 08/04/2025
Post Graduate Thesis  No 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Single Arm Study 
Public Title of Study   Relationship between cardiac marker and cognitive function among patients with ruptured intracranial aneurysm  
Scientific Title of Study   Relationship between NT-proBNP and cognitive function among patients with aneurysmal subarachnoid hemorrhage (COGNI-SAH): a prospective observational study 
Trial Acronym  COGNI-SAH 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Sangeetha RP 
Designation  Associate Professor 
Affiliation  National Institute of Mental Health and Neurosciences 
Address  Department of Neuroanaesthesia and Neurocritical care, Third floor, Faculty block, NIMHANS, Hosur road

Bangalore
KARNATAKA
560029
India 
Phone  9480829770  
Fax    
Email  drsangz14@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Sangeetha RP 
Designation  Associate Professor 
Affiliation  National Institute of Mental Health and Neurosciences 
Address  Department of Neuroanaesthesia and Neurocritical care, Third floor, Faculty block, NIMHANS, Hosur road

Bangalore
KARNATAKA
560029
India 
Phone  9480829770  
Fax    
Email  drsangz14@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Sangeetha RP 
Designation  Associate Professor 
Affiliation  National Institute of Mental Health and Neurosciences 
Address  Department of Neuroanaesthesia and Neurocritical care, Third floor, Faculty block, NIMHANS, Hosur road

Bangalore
KARNATAKA
560029
India 
Phone  9480829770  
Fax    
Email  drsangz14@gmail.com  
 
Source of Monetary or Material Support  
National Institute of Mental Health and Neurosciences 
 
Primary Sponsor  
Name  National Institute of Mental health and Neurosciences 
Address  Hombegowdanagar, Hosur road, Bangalore, Karnataka, India. Pin code- 560029 
Type of Sponsor  Other [Institute of National Importance] 
 
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 Sangeetha RP  National Institute of Mental Health and Neurosciences  Department of Neuroanaesthesia and Neurocritical care, Third floor, Faculty block, NIMHANS, Hosur road
Bangalore
KARNATAKA 
9480829770

drsangz14@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institute Ethics Committee,National Institute of Mental Health and Neurosciences  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: I609||Nontraumatic subarachnoid hemorrhage, unspecified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  1) All patients more than 18 years of age admitted to NIMHANS for surgical clipping or coiling of aneurysm 2) Presentation within 72 hours of ictus
3) WFNS 1 and any MF grade 
 
ExclusionCriteria 
Details  1) Presentation beyond 72 hours of ictus
3) WFNS 2 or more 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
incidence of cognitive dysfunction at hospital discharge among patients with altered NT-proBNP levels after aSAH  On admission, 24 hours after surgery, hospital discharge, 3 months after hospital discharge 
 
Secondary Outcome  
Outcome  TimePoints 
1. Correlation of NT-proBNP with baseline clinical characteristics (cerebral edema, WFNS grade, MF grade, ECG abnormalities)  On admission 
2. Correlation of the trend of change in HRV metrics with NT-proBNP, cognition and quality of life at and after 3 months of hospital discharge  On admission, 24 hours after surgery, hospital discharge, 3 months after hospital discharge 
3. Effect of NT-proBNP on sodium disturbances, duration of hospital stay, mortality, functional outcome and quality of life at 3 months  On admission, 24 hours after surgery, hospital discharge, 3 months after hospital discharge 
 
Target Sample Size   Total Sample Size="170"
Sample Size from India="170" 
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)   21/04/2025 
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="3"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Open to Recruitment 
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  

Cognitive dysfunction has been reported to be as high as 73% at 3 months after aSAH in a small-sampled study. Autonomic dysfunction is a common complication during the acute phase of aneurysmal rupture. Various heart rate variability (HRV) parameters have been proposed to predict cognition in these patients. NT-proBNP is an important myocardial injury marker, similar to the brain natriuretic peptide (BNP). HRV correlates with NT-proBNP levels in patients with acute myocardial ischemia and cardiac failure. The acute surge in BNP after aSAH may predict sodium disturbances, vasospasm and DCI. BNP also influences delirium in cardiac surgical patients and predicts vascular death following non-cardiac surgeries. The role of NT-proBNP in predicting cognitive and autonomic dysfunction is yet to be studied among patients with aSAH. 

The trend of change in NT-proBNP levels after aSAH may correlate with the HRV metrics from baseline till day 7-10 of ictus, which coincides with the time of hospital discharge and can predict cognitive function at discharge and the quality of life at 3 months.

 
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