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CTRI Number  CTRI/2025/11/097665 [Registered on: 18/11/2025] Trial Registered Prospectively
Last Modified On: 18/11/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Single Arm Study 
Public Title of Study   Studying the patterns of sleep disturbances in patients admitted to ICU using polysomnography machine 
Scientific Title of Study   Prevalence and patterns of sleep disturbances in neurocritical care patients assessed by Polysomnography-: A pilot 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  Jithu Mohan P 
Designation  Senior Resident 
Affiliation  NIMHANS 
Address  Department of Neuroanaesthesia and Neurocritical care NIMHANS Hosur Road Bangalore

Bangalore
KARNATAKA
560029
India 
Phone  9633226411  
Fax    
Email  jithumohanp007@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Rohini M Surve 
Designation  Professor 
Affiliation  NIMHANS 
Address  Department of Neuroanaesthesia and Neurocritical care NIMHANS Hosur Road Bangalore

Bangalore
KARNATAKA
560029
India 
Phone  9620216654  
Fax    
Email  rohinigondhule@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Rohini M Surve 
Designation  Professor 
Affiliation  NIMHANS 
Address  Department of Neuroanaesthesia and Neurocritical care NIMHANS Hosur Road Bangalore


KARNATAKA
560029
India 
Phone  9620216654  
Fax    
Email  rohinigondhule@gmail.com  
 
Source of Monetary or Material Support  
NIL 
 
Primary Sponsor  
Name  NIMHANS 
Address  Hosur Road Bangalore Karnataka India 560029 
Type of Sponsor  Government medical college 
 
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 Rohini M Surve  NIMHANS   Emergency ICU 2nd floor Emergency Block, NIMHANS Hosur Road Bangalore 560029
Bangalore
KARNATAKA 
9620216654

rohinigondhule@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
NIMHANS Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: G610||Guillain-Barre syndrome, (2) ICD-10 Condition: G700||Myasthenia gravis,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients admitted to ICU with Guillain Barre Syndrome or Myasthenia Gravis who are conscious and oriented.

 
 
ExclusionCriteria 
Details  Patients who are sedated and ventilated.
Patients with a known history of hearing deficits, seizure disorder, intellectual disability, and psychiatric illness.
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To determine the prevalence of sleep deprivation (total sleep time less than 7 hours with Arousal index more than 20 per hour).
To determine patterns of sleep disturbances such as changes in sleep stages (N1, N2, N3, REM), wakefulness after sleep
onset (WASO), sleep efficiency, sleep onset latency, day time sleep, total sleep (consist of any sleep stages) in 16-24h.
 
Day 2 of ICU admission for 16-24 hours
Day 5-7 of ICU admission for 16-24 hours
 
 
Secondary Outcome  
Outcome  TimePoints 
To assess subjective sleep quality using Richard Campbell Sleep Questionnaire (RCSQ).
To compare objective polysomnography (PSG) findings with subjective questionnaire
responses.
To assess the temporal change in the sleep patterns over time.
Association of sleep patterns with pain (VAS scores) & ICU delirium (CAM ICU scores).
To understand micro-sleep architecture patterns (i.e., EEG spectral patterns, spindle parameters, slow wave parameters, slow-wave-spindle coupling & REM pattern analysis.
 
Day 1-7 of ICU admission 
 
Target Sample Size   Total Sample Size="20"
Sample Size from India="20" 
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)   01/12/2025 
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="0"
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 is a prospective observational study including patients admitted to Neuro-ICUs diagnosed with GBS and Myasthenia gravis and are conscious. This study will be conducted over 6 months after Institutional Ethics Board approval.                                                                                                                                                                                                                           All GBS and Myasthenia gravis patients admitted to Neuro-ICUs will be screened with inclusion and exclusion criteria. Patients will receive standard care provided by the ICU physician in charge. APACHE II score at the time of ICU admission, pre-existing sleep disturbances over a preceding 1-month period will be assessed using self-rated questionnaire of Pittsburgh Sleep Quality Index (PSQI) which will be answered by the next of kin. After taking the informed consent, patient will be briefed about the Richard Campbell Sleep Questionnaire. It is a 5 item self-report questionnaire. It has a Visual Analog Scale (VAS) ranging from 0 – 100 mm, with higher scores representing better sleep. The data is collected from the patient in the afternoon and total score, which is the mean of all 5 variables will be taken to assess the perception of sleep. The same day we do the comprehensive sleep analysis with Polysomnography.

Polysomnography includes recording of Electroencephalogram (EEG), Electrooculogram (EOG), Electromyogram (EMG), Electrocardiogram (ECG), Respiratory efforts, Pulse oximetry, Snoring sounds.

For EEG recording, EEG cup electrodes will be attached to the scalp with the help of adhesive glue and secured with a roller gauze wrapped around the head. Sleep EEG recording is done according to the American Academy of Sleep Medicine (AASM) criteria. The AASM recommends the following derivation- F4-M1, C4-M1, and O2-M1, F3-M2, C3-M2, and O1-M2. 

1st polysomnography study : on day 2 of ICU admission for 16-24 hours

2nd polysomnography study:  at 5-7 days of ICU admission for 16-24 hours

 
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