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CTRI Number  CTRI/2025/02/081172 [Registered on: 24/02/2025] Trial Registered Prospectively
Last Modified On: 22/02/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Follow Up Study 
Study Design  Single Arm Study 
Public Title of Study   Pre Operative Evaluation of Caval Aorta Diameter Index as a Predictor of Post induction Hypotension in Laparoscopic Cholecystectomy Surgery 
Scientific Title of Study   Pre Operative Evaluation of Caval Aorta Diameter Index as a Predictor of Post induction Hypotension in Laparoscopic Cholecystectomy 
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 Mamta Harjai 
Designation  Professor  
Affiliation  Dr Ram Manohar Lohia Institute of medical sciences 
Address  Department of Anaesthesiology and Critical Care medicine
Dr. RMLIMS, Vibhuti Khand, Lucknow
Lucknow
UTTAR PRADESH
226010
India 
Phone  8176007015  
Fax    
Email  mamtaharjaidoctor@yahoo.co.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr Mamta Harjai 
Designation  Professor  
Affiliation  Ram Manohar Lohia institute 
Address  Department of anaesthesiology and critical care medicine, Dr. RMLIMS, vibhuti khand, lucknow

Lucknow
UTTAR PRADESH
226010
India 
Phone  8176007015  
Fax    
Email  mamtaharjaidoctor@yahoo.co.in  
 
Details of Contact Person
Public Query
 
Name  Dr Niharika Singh 
Designation  Junior Resident 
Affiliation  DR RAM MANOHAR LOHIA INSTITUTE OF MEDICAL SCIENCES 
Address  Department of Anaesthesiology and Critical Care medicine, Dr. RMLIMS, Vibhuti Khand, Lucknow

Lucknow
UTTAR PRADESH
226010
India 
Phone  8400728318  
Fax    
Email  niharika97.singh@yahoo.in  
 
Source of Monetary or Material Support  
Dr Ram manohar lohia Institute of medical sciences, Vibhuti Khand, Lucknow, 226010 
 
Primary Sponsor  
Name  Dr Ram Manohar Lohia Institute of medical sciences 
Address  Dr. RMLIMS, Vibhuti Khand, Lucknow, 226010 
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 Niharika Singh  Dr Ram Manohar Lohiya Institute of Medical Sciences  Department of Anaesthesia, Vibhuti Khand, Gomti nagar, Lucknow
Lucknow
UTTAR PRADESH 
8400728318

niharika97.singh@yahoo.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee, Dr RMLIMS Lucknow   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K801||Calculus of gallbladder with othercholecystitis, (2) ICD-10 Condition: K801||Calculus of gallbladder with othercholecystitis,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  nil  nil 
Comparator Agent  nil  nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  50.00 Year(s)
Gender  Both 
Details  ASA Grade 1 and 2 patients with body weight 50 to 70 kilograms scheduled for elective laparoscopic cholecystectomy under general anaesthesia 
 
ExclusionCriteria 
Details  1. Patient’s refusal to give consent,
2. Significant cardiac comorbidity (significant arrhythmia, severe valvular disease, unstable angina, implanted pacemaker, ejection fraction <50%),
3. BMI>30 Kg/m2
4. Patient taking Angiotensin Receptor Blockers
5. Systolic blood pressure <90 mmHg or mean arterial blood pressure (MBP) less than 70 mmHg
6. Pregnancy
 
 
Method of Generating Random Sequence    
Method of Concealment    
Blinding/Masking    
Primary Outcome  
Outcome  TimePoints 
Measurement of Caval aorta diameter index  in the pre operative room at 1 minutes 
 
Secondary Outcome  
Outcome  TimePoints 
Heart Rate, Mean arterial blood pressure, peripheral saturation of oxygen, systolic blood pressure, diastolic blood pressure  The heart rate & systolic blood pressure shall be recorded every 2 minutes after induction for 5 minutes & then every 5 minutes till 15 minutes post induction 
 
Target Sample Size   Total Sample Size="80"
Sample Size from India="80" 
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)   05/03/2025 
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 Applicable 
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   Early prediction of pre operative volume status of the patient is paramount to allow at-risk patients to  take appropriate preventive measures.in view of pre operative volume status assessment, ultrasound measurements of inferior vena cava diameter during respiration, including maximum ivc diameter and minimum ivc diameter at the end of respiration during spontaneous breathing and collapsilibity index will be measured. A new parameter known as  caval aorta diameter index will be measured and used as an assessment tool to predict the degree of  post induction hypotension in patients posted for elective laparoscopic cholecystectomy. 
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