Three-Dimensional Ultrasound (3D US) in Parturients
|ClinicalTrials.gov Identifier: NCT01523249|
Recruitment Status : Completed
First Posted : February 1, 2012
Last Update Posted : September 30, 2014
|Condition or disease||Intervention/treatment|
|Pregnancy||Device: Lumbar 3D ultrasound scanning and palpation (Ultrasonix )|
|Study Type :||Observational|
|Actual Enrollment :||20 participants|
|Official Title:||Three-Dimensional Ultrasound (3D US) for Epidural Needle Insertion in Parturients|
|Study Start Date :||November 2013|
|Primary Completion Date :||February 2014|
|Study Completion Date :||September 2014|
Scanned and palpated
Healthy, pregnant, term women delivering at BC Women's Hospital and expecting to have neuraxial anesthesia.
Device: Lumbar 3D ultrasound scanning and palpation (Ultrasonix )
Paramedian ultrasound scanning of L2-3 and L3-4 lumbar interspaces to visualize ligamentum flavum. Palpation of the same intervertebral spaces to identify spine midline and needle insertion point.
Other Name: Ultrasonix US machine (model Sonix Touch)
- Distance between two needle insertion points [ Time Frame: 20 minutes of testing prior to delivery ]To measure the distance between the needle puncture site identified by the 3D US transducer to the needle puncture site identified by palpation, measured on a transparency film.
- Distance between needle insertion point and spine midline [ Time Frame: 20 minutes of testing prior to delivery ]To measure the perpendicular distance between the needle puncture site identified by the 3D US transducer to the midline identified by manual palpation (to the P-line), measured on a transparency film.
- assess quality of 3D US images [ Time Frame: one year ]To obtain US images of the epidural anatomy with various settings of the image-processing system to determine the optimal 3D US parameters that give the clearest images. An experienced sonographer will analyze the US images in the UBC laboratory using a qualitative measure of clarity (scale of 1 to 5) of the depiction of the ligamentum flavum and laminae. This quality measure will be correlated to the image acquisition parameters to determine the optimal set of parameters.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01523249
|Canada, British Columbia|
|BC Women's Hospital|
|Vancouver, British Columbia, Canada, V6H 3N1|
|Principal Investigator:||Allaudin Kamani, MD||University of British Columbia and BC Women's Hospital|