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CTRI Number  CTRI/2025/03/082332 [Registered on: 17/03/2025] Trial Registered Prospectively
Last Modified On: 15/03/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Prospective Observational Study 
Study Design  Other 
Public Title of Study   To study the effect of the ratio obtained by dividing the hip width by shoulder width of a person on the spread of the drug bupivacaine heavy injected in the fluid filled space around the spinal cord in patients undergoing surgeries below the level of umbilicus. 
Scientific Title of Study   Correlation between hip/shoulder - width ratio and intrathecal spread of hyperbaric bupivacaine –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 Ajay Kumar 
Designation  Senior Specialist & HOD 
Affiliation  Deen Dayal Upadhyay Hospital, Govt of NCT of Delhi 
Address  Dept of Anaesthesiology & Critical Care, Deen Dayal Upadhyay Hospital, Hari Nagar, New Delhi

West
DELHI
110064
India 
Phone  9718990114  
Fax    
Email  ajayannu@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Divyansh Gaur 
Designation  Secondary DNB 
Affiliation  Deen Dayal Upadhyay Hospital, Govt of NCT of Delhi 
Address  Dept of Anaesthesiology & Critical Care, Deen Dayal Upadhyay Hospital, Hari Nagar, New Delhi

West
DELHI
110064
India 
Phone  9435975530  
Fax    
Email  drdivyanshgaur@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Puneet Dwivedi 
Designation  Senior Medical Officer 
Affiliation  Deen Dayal Upadhyay Hospital, Govt of NCT of Delhi 
Address  Dept of Anaesthesiology & Critical Care, Deen Dayal Upadhyay Hospital, Hari Nagar, New Delhi

West
DELHI
110064
India 
Phone  9999178199  
Fax    
Email  drpuneetdwivedi@gmail.com  
 
Source of Monetary or Material Support  
Deen Dayal Upadhyay Hospital, Govt of NCT of Delhi, Hari Nagar, New Delhi West DELHI 110064 India  
 
Primary Sponsor  
Name  Deen Dayal Upadhyay Hospital 
Address  Dept of Anaesthesiology & Critical Care, Deen Dayal Upadhyay Hospital, Hari Nagar, New Delhi, 110064 
Type of Sponsor  Research institution and hospital 
 
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 Ajay Kumar  Deen Dayal Upadhyay Hospital, Govt of NCT of delhi   MOT1,MOT2,Trauma OT,Dept of Anaesthesiology & Critical Care, Hari Nagar, New Delhi, 110064
West
DELHI 
9718990114

ajayannu@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee Deen Dayall Upadhyay Hospital  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  NIL  NIL 
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  20.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  All patients of ASA I/II category undergoing infraumbilical surgeries under spinal anaesthesia. 
 
ExclusionCriteria 
Details  1.History of allergy to bupivacaine.
2.Contraindication for spinal anaesthesia.
3.Spinal deformity.
4.Patients with h/o previous spine surgery.
5.Patients who are not able to sit straight.
6.Failure to perform lumbar puncture at L3-L4 intervertebral space in the midline.
7.Any change in patient position or table position within 30 minutes of spinal anaesthesia.
8.Patients with h/o previous hip/pelvic surgery.
9.Patients posted for hip/pelvic surgeries.
10.Patients with intra-abdominal tumors or mass.
11.Pregnant patients. 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To analyze the correlation between hip/shoulder - width ratio and maximum sensory
blockade to pin prick sensation. 
The cephalad spread of spinal anaesthesia will be assessed at 5-minute intervals till 30 minutes after intrathecal injection and the level of spread 30 minutes after intrathecal injection will be used for the analysis. 
 
Secondary Outcome  
Outcome  TimePoints 
To analyze the correlation of age, height, weight, vertebral column length with maximum
sensory blockade to pin prick sensation. 
The cephalad spread of spinal anaesthesia will be assessed at 5-minute intervals till 30 minutes after intrathecal injection and the level of spread 30 minutes after intrathecal injection will be used for the analysis. 
 
Target Sample Size   Total Sample Size="111"
Sample Size from India="111" 
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)   26/03/2025 
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="0"
Months="1"
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  
Background: Various factors including anthropometric measurements are known to affect the
cephalad spread of spinal anaesthesia. Out of these, certain anthropometric values can be easily
measured and are helpful in predicting the level of sensory block after giving spinal
anaesthesia.

Aim: The Aim of our study is to evaluate the correlation between hip/shoulder width ratio and
intrathecal spread of hyperbaric bupivacaine.

Settings and Design: This Prospective observational study will be conducted at Deen Dayal
Upadhyay Hospital, New Delhi after obtaining approval from the Scientific Research
committee, Institutional Ethics Committee and written informed consent of participating
patients.

Material and Methods: One hundred eleven patients fulfilling the inclusion criteria
undergoing infraumbilical surgeries under spinal anaesthesia will be enrolled in the study.
Preoperatively from the back side, hip-width of the patient will be measured between the two
iliac crests, shoulder-width will be measured between the two acromion processes and vertebral
column length will be measured between C7 vertebra and sacral hiatus with the patient in sitting
position. Patient age, sex, height and weight will also be recorded. Using a 25G Quincke’s
needle, 3 ml of 0.5 % hyperbaric bupivacaine will be administered intrathecally to the patient
in a lateral decubitus position at L3-L4 interspace. The cephalad spread of spinal anaesthesia
will be assessed using loss of pinprick sensation at 5 minute intervals till 30 minutes after
intrathecal injection. The level of spread 30 minutes after intrathecal injection will be used for
analysis.

Statistical Analysis: Spearman/Pearson correlation coefficient and multivariate linear
regression model will be used for the analysis of correlation between study factors and level of
sensory block.

Conclusion: This study will be helpful in evaluating the correlation between hip/shoulder –
width ratio and spread of spinal anaesthesia in Indian population.
 
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