Improving Accuracy of Landmarks for Neuraxial Blocks in Pregnancy: The Sacral Anatomical Interspace Landmark (SAIL) Technique



Status:Completed
Conditions:Women's Studies
Therapuetic Areas:Reproductive
Healthy:No
Age Range:18 - Any
Updated:11/3/2018
Start Date:February 15, 2018
End Date:October 30, 2018

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A Novel Method of Improving Accuracy of Anatomical Landmarks for Neuraxial Blocks in Pregnancy: The Sacral Anatomical Interspace Landmark (SAIL) Technique

This study is a randomized clinical trial to evaluate the accuracy of the novel SAIL
technique compared to the classic intercristal line technique in estimating the L4-L5
interspace for labor epidural or spinal anesthesia placement. The investigators hypothesize
that the SAIL technique will be more accurate in successfully locating the L4-L5 interspace
in pregnant women than the classic intercristal line technique.

The current standard technique aiming at identifying the L4-L5 intervertebral space as a
reference point before performing a neuraxial block relies on the correct clinical estimation
of the intercristal line. The classic intercristal line technique uses an imaginary line that
intersects the iliac crests to determine a safe puncture level to access. In pregnant women,
the classic technique fails to identify the safe puncture level 40 % of the time.

The newly proposed Sacral Anatomical Interspace Landmark (SAIL) technique consists of using
the sacral bone to determine a safe puncture level to access.

Lumbar ultrasound will determine the accuracy of each clinical technique in identifying the
L4-L5 interspace (target).

Inclusion Criteria:

- Ultrasound-determined gestation age greater than or equal to 37 weeks

- Expressed interest or indication for epidural anesthesia

- Patients in the first stage of labor

Exclusion Criteria:

- Patients perceived or indicating that she is unable to cooperate with positioning

- BMI greater than 45 kg/m2

- Previous spine surgery or known spinal deformities

- Impaired decision making abilities

- non-English speaking
We found this trial at
1
site
500 S State St
Ann Arbor, Michigan 48109
(734) 764-1817
University of Michigan The University of Michigan was founded in 1817 as one of the...
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mi
from
Ann Arbor, MI
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