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Clinical Trials/CTRI/2026/01/101537
CTRI/2026/01/101537
Not yet recruiting
Not Applicable

COMPARISON OF ULTRASOUND-GUIDANCE WITH CRAIGS FORMULA FOR MEASUREMENT OF DEPTH OF SUBARACHNOID SPACE IN PATIENTS UNDERGOING SPINAL ANAESTHESIA

VMMC and sjh1 site in 1 country35 target enrollmentStarted: February 5, 2026Last updated:

Overview

Phase
Not Applicable
Status
Not yet recruiting
Sponsor
VMMC and sjh
Enrollment
35
Locations
1
Primary Endpoint
To see if ultrasound can be used to predict skin to sub arachnoid space depth in adult Indian population

Overview

Brief Summary

Patients meeting inclusion criteria will undergo a pre-anaesthetic evaluation, including physical exam, relevant investigations, and airway assessment. They will be informed about the ultrasound procedure and instructed to fast after 10 PM. Three SSD measurements will be taken: 1) ultrasound at the L3-L4 interspace, 2) Craig’s formula using height, and 3) actual depth after a subarachnoid block using a 25-gauge Quincke needle. The procedure will be performed under aseptic conditions with supervision. Patients with difficulty during the block will be excluded from the study.

Study Design

Study Type
Observational

Eligibility Criteria

Ages
18.00 Year(s) to 65.00 Year(s) (—)
Sex
All

Inclusion Criteria

  • All Patients aged between 18 and 65 years of either gender, undergoing elective surgeries under spinal anaesthesia with ASA1 or 2 status.

Exclusion Criteria

  • Patients with known or visible spinal deformities and history of previous spine surgeries.
  • Exclusion Criteria Details
  • Patients with coagulation abnormalities.
  • Patients with allergic or skin diseases in the spinal area.

Outcomes

Primary Outcomes

To see if ultrasound can be used to predict skin to sub arachnoid space depth in adult Indian population

Time Frame: Not applicable

Secondary Outcomes

  • 1. To see the accuracy of the Craigs formula for actual skin-to-subarachnoid space distance calculation in the adult Indian population(2. To see the number of Sub Arachnoid Block attempts for a successful spinal anaesthesia)

Investigators

Sponsor
VMMC and sjh
Sponsor Class
Government medical college
Responsible Party
Principal Investigator
Principal Investigator

Dr Sunil

VMMC and SJH

Study Sites (1)

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