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CompletedNCT03679663AccuroUpdated Oct 5, 2020

Ultrasound Versus Palpation for Spinal Anesthesia Success

An interventional study of Ultrasound in Ultrasound, sponsored by Tel-Aviv Sourasky Medical Center. Completed at 1 site in Israel. Open to female participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2020-10-05.

Sponsored by Tel-Aviv Sourasky Medical Center · Not applicable, Interventional, and Diagnostic

From the registry’s dates

  • Primary completion was Aug 2020, 6 years 2 months ago, and no results have been posted to the registry.
Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
Female
01

Study summary

Aim is to investigate the difference in number of attempts to place neuraxial block comparing handheld ultrasound versus use of palpation alone for women with impalpable bony landmarks undergoing spinal anesthesia for elective cesarean delivery.

Read the detailed description

Patients will be recruited prior to cesarean delivery and their site of lumbar injection will be examined. Women with impalpable bony landmarks will be offered recruitment to the study. Women will be randomly assigned to the standard of care group - palpation attempts only, versus an ultrasound group, where the insertion point will be identified by the handheld ultrasound device

Inclusion criteria:

Lumbar spinous processes impalpable. Elective cesarean delivery for singleton pregnancies BMI >30 No contraindications to neuraxial block Signed informed consent Neuraxial Block planned Exclusion Criteria Refuses informed consent Poor written Hebrew, no spoken English or Hebrew Patients will be randomized into two groups : an ultrasound (US) group and a palpation (PP) group.

The primary outcome of our study is the number of needle redirections, defined as any ventral advancement of the needle and/or introducer, as well as any new intervertebral space attempted.

Secondary outcomes include:

The insertion site identification time, patient verbal numerical pain score (0-10) after skin incision.

02

Conditions studied

  • Ultrasound

Keywords

  • ultrasound
03

In context

Lead sponsor

Tel-Aviv Sourasky Medical Center is the lead sponsor of 541 studies on the registry; 49 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Eligibility criteria

Inclusion Criteria:

Lumbar spinous processes impalpable. Elective caesarean delivery for singleton pregnancies BMI >30 No contraindications to neuraxial block Signed informed consent Neuraxial Block planned

05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
40 participants (actual)

Study arms

  • No intervention
    Palpation

    Anesthesia performed without ultrasound

  • Experimental
    Ultrasound

    Anesthesia performed after ultrasound

    Device: Ultrasound

Interventions

  • DeviceUltrasound

    Use of ultrasound to identify pre-puncture site

06

What researchers measure

Primary outcomes

  1. Needle movement

    number of needle redirections, defined as any ventral advancement of the needle and/or introducer, as well as any new intervertebral space attempted.

    Time frame: 10 mins

Secondary outcomes

  1. The insertion site identification time,

    time

    Time frame: 10 mins

  2. Patient verbal numerical pain score (0-10) after skin incision.

    Patient verbal numerical pain score (0-10) after skin incision. Scale is Verbal numerical rating scale, where zero = no pain at all and 10 = maximum possible pain.

    Time frame: 10 mins

  3. Patient verbal numerical pain score (0-10) after spinal performance. Patient verbal numerical pain score (0-10). Scale is Verbal numerical rating scale, where zero = no pain at all and 10 = maximum possible pain.

    Patient verbal numerical pain score (0-10) after spinal performance. Patient verbal numerical pain score (0-10) Scale is Verbal numerical rating scale, where zero = no pain at all and 10 = maximum possible pain.

    Time frame: 10 mins

07

Study locations

1 site
  • Tel Aviv Sourasky Medical Center
    Tel Aviv, Israel
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 5, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03679663
Lead sponsor
Tel-Aviv Sourasky Medical Center
Responsible party
Sponsor
First posted
Sep 20, 2018
Start date
Dec 20, 2018
Primary completion
Aug 4, 2020
Completion
Aug 4, 2020
Last update
Oct 5, 2020

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2020. You cannot join it, but the record below documents what was studied.

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