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CTRI Number  CTRI/2025/12/098878 [Registered on: 11/12/2025] Trial Registered Prospectively
Last Modified On: 09/12/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Ultrasound versus landmark method for spinal anaesthesia in obese pregnant women 
Scientific Title of Study   Comparison of Ultrasound guided and Landmark based Subarachnoid Block in Obese Parturients 
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 Ashima Grace Thomas 
Designation  Junior Resident  
Affiliation  Jubilee Mission Medical College and Research Institute 
Address  Department of Anaesthesiology, Jubilee Mission Medical College and Research Institute , Fathima Nagar, Mahatma Nagar, Nellikunnu, Thrissur

Thrissur
KERALA
680005
India 
Phone  9495955804  
Fax    
Email  ashimagracethomas804@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Sugatha Prakash  
Designation  Professor 
Affiliation  Jubilee Mission Medical College and Research Institute 
Address  Department of Anaesthesiology, Jubilee Mission Medical College and Research Institute , Fathima Nagar, Mahatma Nagar, Nellikunnu, Thrissur


KERALA
680005
India 
Phone  9633397003  
Fax    
Email  sugatha234@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Sugatha Prakash  
Designation  Professor 
Affiliation  Jubilee Mission Medical College and Research Institute 
Address  Department of Anaesthesiology, Jubilee Mission Medical College and Research Institute , Fathima Nagar, Mahatma Nagar, Nellikunnu, Thrissur

Thrissur
KERALA
680005
India 
Phone  9633397003  
Fax    
Email  sugatha234@gmail.com  
 
Source of Monetary or Material Support  
Jubilee Mission Medical College and Research Institute , Fathima Nagar, Mahatma Nagar, Nellikunnu, Thrissur, Kerala 680005 
 
Primary Sponsor  
Name  Dr Ashima Grace Thomas 
Address  Department of Anaesthesiology, Jubilee Mission Medical College and Research Institute , Fathima Nagar, Mahatma Nagar, Nellikunnu, Thrissur, Kerala 680005 
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 Ashima Grace Thomas  Jubilee Mission Medical College and Research Institute   Department of Anaesthesiology, First Floor , Old block,Fathima Nagar, Mahatma Nagar, Nellikunnu, Thrissur, Kerala 680005
Thrissur
KERALA 
9495955804

ashimagracethomas804@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee, Jubilee Mission Medical College and Research Institute   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O94-O9A||Other obstetric conditions, not elsewhere classified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Landmark based approach  Landmark based subarachnoid blocks in obese parturients observed over one year 
Intervention  Ultrasound guided approach  Ultrasound guided subarachnoid blocks in obese parturients observed over one year 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  50.00 Year(s)
Gender  Female 
Details  1. ASA II or III obese parturients (pre pregnancy BMI more than or equal to 25 kilogram per metre cubed) undergoing elective or emergency caesarean section.

2. Singleton pregnancy at term (greater than 37 weeks).

3. No contraindications to spinal anaesthesia. 
 
ExclusionCriteria 
Details  1. Patients with spinal deformities or previous spinal surgery.

2. Contraindications to neuraxial anaesthesia (coagulopathy, infection at puncture site, allergy to local anaesthetics, psychiatric illness).

3. Patients requiring emergency caesarean section for foetal distress. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
First pass success rate and number of needle passes  First pass success rate and number of needle passes at the time of performing subarachnoid block 
 
Secondary Outcome  
Outcome  TimePoints 
Number of needle puncture attempts  Till successful spinal achieved 
Total procedure time for a successful puncture  Till CSF backflow 
Patient satisfaction score  1 hour post procedure 
Incidence of complications ( PDPH, failed block, traumatic tap)  1 day post procedure 
 
Target Sample Size   Total Sample Size="30"
Sample Size from India="30" 
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)   01/01/2026 
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="0"
Days="0" 
Recruitment Status of Trial (Global)   Closed to Recruitment of Participants 
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   There is growing interest in the use of ultrasound guidance in different patient populations, it being noninvasive. Obesity in parturients is of concern with regard to performing subarachnoid block which is the preferred choice for cesarean section. This study has been undertaken to assess the benefit of ultrasound as a tool for better patient outcome and care. 
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