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.

Not yet recruiting

• Conditions: Medical and Surgical,

• Registration Number: CTRI/2025/03/082332
• Lead Sponsor: Deen Dayal Upadhyay Hospital

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.

Detailed Description

Not available

Study Timeline

• Last Update Posted: 2025-03-15
• Study Start: 2025-03-26

Recruitment & Eligibility

• Status: Not Yet Recruiting
• Sex: All
• Target Recruitment: 111

Inclusion Criteria

All patients of ASA I/II category undergoing infraumbilical surgeries under spinal anaesthesia.

Exclusion Criteria

• 1.History of allergy to bupivacaine.
• 2.Contraindication for spinal anaesthesia.
• 3.Spinal deformity.
• 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.
• 10.Patients with intra-abdominal tumors or mass.
• 11.Pregnant patients.

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
To analyze the correlation between hip/shoulder - width ratio and maximum sensory	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.
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 Measures

Name	Time	Method
To analyze the correlation of age, height, weight, vertebral column length with maximum	sensory blockade to pin prick sensation.

Trial Locations

Locations (1)

Deen Dayal Upadhyay Hospital, Govt of NCT of delhi; 🇮🇳 West, DELHI, India

Deen Dayal Upadhyay Hospital, Govt of NCT of delhi

🇮🇳West, DELHI, India

Dr Ajay Kumar

Principal investigator

9718990114

ajayannu@gmail.com