Correlation of the Dural Sac Dimension With the Spread of Spinal Anesthesia

Correlation of the Dural Sac Dimension With the Spread of Spinal Anesthesia in Elderly Patients

Cerebrospinal fluid volume is an important factor that influences peak block height and regression of sensory and motor blockade. The aim of this study is to evaluate the effect of dural sac dimension on the spread of spinal anesthesia in elderly patient using ultrasound.

Study Overview

• Status: Completed
• Conditions: Elderly Patients
• Intervention / Treatment: Other: Ultrasound assessment of dural sac dimension

• Study Type: Observational
• Enrollment (Actual): 41

Contacts and Locations

Study Locations

• Korea, Republic of
  • Seoul, Korea, Republic of
    • SMG-SNU Boramae Medical Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 65 years and older (Older Adult)
• Accepts Healthy Volunteers: N/A
• Genders Eligible for Study: Female

• Sampling Method: Non-Probability Sample

Study Population

Female patients older than 65 years of age who are undergoing elective surgery under spinal anesthesia

Description

Inclusion Criteria:

• Patients who are scheduled for elective surgery under spinal anesthesia

Exclusion Criteria:

• Known anatomical abnormality or pathology in the spine
• History of lumbar spinal surgery or compression fracture
• Height less than 150 cm

Study Plan

How is the study designed?

Design Details

• Observational Models: Case-Only
• Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Correlation between the dural sac dimension and spinal anesthesia spread (peak sensory block)	The dural sac dimension is assessed before spinal anesthesia. After spinal anesthesia, the sensory and motor level are evaluated. Then, the correlation between the dural sac dimension and spinal anesthesia blockade is assessed.	At 30 minutes after the induction of spinal anesthesia

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Correlation between the dural sac dimension and duration of spinal anesthesia	The sensory and motor regression are assessed. Then, the correlation between the dural sac dimension and the duration of spinal blockade is assessed.	At 30 minutes after the end of surgery
Correlation between the dural sac dimension and body mass index	Correlation between the dural sac dimension and body mass index is assessed.	5 minutes before spinal anesthesia
Correlation between the dural sac dimension and waist circumference	Correlation between the dural sac dimension and waist circumference is assessed.	5 minutes before spinal anesthesia
Correlation between the dural sac dimension and age	Correlation between the dural sac dimension and age is assessed.	5 minutes before spinal anesthesia

Collaborators and Investigators

• Sponsor: SMG-SNU Boramae Medical Center

Study record dates

Study Major Dates

• Study Start (Actual): October 10, 2019
• Primary Completion (Actual): February 14, 2020
• Study Completion (Actual): February 14, 2020

Study Registration Dates

• First Submitted: August 12, 2019
• First Submitted That Met QC Criteria: August 21, 2019
• First Posted (Actual): August 22, 2019

Study Record Updates

• Last Update Posted (Actual): March 11, 2020
• Last Update Submitted That Met QC Criteria: March 9, 2020
• Last Verified: March 1, 2020

More Information

Terms related to this study

• Other Study ID Numbers: 2019-02

Drug and device information, study documents

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