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Finding out how deep the needle should go for spinal anaesthesia: comparing ultrasound scan with a simple body measurement method Using height

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

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2026/01/101537
Enrollment
35
Registered
2026-01-19
Start date
Unknown
Completion date
Unknown
Last updated
2026-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: O- Medical and Surgical

Interventions

Intervention1: Nil: Nil Control Intervention1: Nil: Nil

Sponsors

VMMC and sjh
Lead Sponsor

Eligibility

Inclusion criteria

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

Exclusion criteria: 1. Patients with known or visible spinal deformities and history of previous spine surgeries. Exclusion Criteria Details 2. Patients with coagulation abnormalities. |3. Patients with allergic or skin diseases in the spinal area

Design outcomes

Primary

MeasureTime frame
To see if ultrasound can be used to predict skin to sub arachnoid space depth in adult Indian populationTimepoint: Not applicable

Secondary

MeasureTime frame
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 3.To see if Body Surface Area or Body Mass Index has a correlation with Skin to Sub Arachnoid space depthTimepoint: Not applicable

Countries

India

Contacts

Public ContactDr Deepa K Khurana

VMMC and sjh

drdeepakhurana@gmail.com9871813837

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 7, 2026