the Relationship Between Vertebral Body Length, Subarachnoid Space Width and Block Level

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT05201261

Enrollment

Registered

2022-01-21

Start date

2022-02-28

Completion date

2023-02-28

Last updated

2022-01-21

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

Conditions

Combined Spinal Epidurai Anesthesia, Lower Extremity Surgery

Brief summary

Spinal anesthesia technology has been widely used in various surgeries and multi-mode analgesia. Spinal ultrasound imaging has been proved to be a reliable tool for evaluating spinal parameters. Ultrasound-guided spinal puncture technology has also been skillfully applied in clinical practice. How to provide perfect nerve block effect for operation, provide good postoperative analgesia, and prevent unnecessary extensive block leading to other complications and related risks has always been the focus of anesthesiologists. Doses and the relationship between the anesthesia plane great individual differences, and previous research on the patient's own condition such as height, weight, 6 to the anesthesia plane have different results, the influence of clinical work often refer patients height adjustment of drug doses, this research attempts to evaluate ultrasound was used to assess spinal vertebral body in the plane of the length and width of subarachnoid and anesthesia.

Interventions

DEVICEltrasonic measure

In the right decubitus position, the spine was scanned with an ultrasonic convex array probe. Starting from the sacrum, the length of each vertebral body of the lumbar spine was measured on a para-midsagittal oblique view. The intervertebral space was located and the width of the subarachnoid space was measured on a midsagittal and transverse view.

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 55 Years

Healthy volunteers

Inclusion criteria

* Patients undergoing elective lower limbs surgery * ASA: grade I to III

Exclusion criteria

* There are contraindications to spinal anesthesia * Allergic to local anesthetics * Patient refused

Design outcomes

Primary

Measure	Time frame	Description
The length of lumbar cone	1year	Ultrasound findings
The width of subarachnoid space was measured by ultrasound	1year	Ultrasound findings

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026