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

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.

Study Overview

• Status: Not yet recruiting
• Conditions: Lower Extremity Surgery; Combined Spinal Epidurai Anesthesia
• Intervention / Treatment: Device: ltrasonic measure

• Study Type: Observational
• Enrollment (Anticipated): 50

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 55 years (ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Patients undergoing elective surgery under spinal anesthesia. Inclusion criteria: (1) Elective lower extremity surgery; (3) ASA (American Society of Anesthesiologists) Grading: ⅰ - ⅲ.

Description

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

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Ultrasound-guided group; Adult patients with American Society of Anesthesiologists physical status I/II/III scheduled to undergo elective Lower limb surgery under spinal anesthesia were considered for eligibility.	Device: ltrasonic 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.

What is the study measuring?

Primary Outcome Measures

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

Collaborators and Investigators

• Sponsor: Shengjing Hospital

Study record dates

Study Major Dates

• Study Start (ANTICIPATED): February 1, 2022
• Primary Completion (ANTICIPATED): February 1, 2023
• Study Completion (ANTICIPATED): February 1, 2023

Study Registration Dates

• First Submitted: December 16, 2021
• First Submitted That Met QC Criteria: January 20, 2022
• First Posted (ACTUAL): January 21, 2022

Study Record Updates

• Last Update Posted (ACTUAL): January 21, 2022
• Last Update Submitted That Met QC Criteria: January 20, 2022
• Last Verified: December 1, 2021

More Information

Terms related to this study

• Other Study ID Numbers: block level

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No