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TerminatedNCT01757314Updated Sep 28, 2016

Comparing Palpation Guided and Ultrasound Guided Arterial Line Placement

An observational study in Surgeries Requiring Arterial Lines, sponsored by Rutgers, The State University of New Jersey. Terminated at 1 site in United States. Open to participants aged 25 Years to 35 Years. Per ClinicalTrials.gov, last updated 2016-09-28.

Sponsored by Rutgers, The State University of New Jersey · Observational

Why this study was terminated
already several publications in the literature
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
4
Ages
25 Years to 35 Years
Sex
All
01

Study summary

When surgery is performed under general anesthesia, a catheter is placed in a vein to administer drugs and saline. During major operations, an additional catheter is placed in an artery in order to measure the blood pressure closely and withdraw blood samples at frequent intervals for various laboratory tests. This arterial catheter is usually placed by feeling the patient's artery at the wrist and inserting the guide-needle in a blind fashion. This procedure, at times, leads to delays and failures due to an inability to feel the arterial pulsation well either due to the patients' anatomy or the anesthetic effect. This study will determine whether training Anesthesiology Residents in the use of ultrasound technology and its application in identifying an artery can prevent the problems associated with the conventional palpation technique. Our finding will lead to better and safer anesthetic management of patients presenting for a major surgical procedure. Furthermore, the finding will help us in introducing the education and training of ultrasound-guided arterial catheter placement in our Residency Program.

The investigators propose to follow anesthesia residents over a course of 3 years assessing their skill level for both palpation and ultrasound technique.

Read the detailed description

This is an updated study on a previous IRB-approved research (0120070296) which was terminated prior to conclusion as the principal investigator terminated his employment at the UNDNJ. An arterial catheter is routinely placed immediately following induction of anesthesia, in major operative procedures, in order to measure blood pressure continuously, perform frequent blood-gas analysis and withdraw blood for repeated laboratory testing. The arterial catheter is traditionally placed blindly by palpating the radial artery of the patient. This way of placing a radial artery catheter can encounter delay or failure due to conditions such as obesity, arteriosclerosis, arterial spasm and anesthesia-induced hypotension. Our study will compare the performance of Anesthesiology Residents in placing an arterial catheter by the traditional palpation-guided technique and by the ultrasound-guided technique after training in ultrasound usage. The comparison will utilize the following parameters:

  • Time taken to successfully place a catheter
  • Number of attempts needed to place a catheter
  • Number of puncture site changes encountered
  • Failure rate of the resident with each technique
  • The need for replacement of the catheter during surgery The data collection will be done by an independent observer, who is not a member of the anesthesia care team or research team. The Residents performing the catheter placement will not be members of the research team and will not have access to the data. If the Resident fails to place the catheter, the attending anesthesiologist will rescue by placing the arterial catheter himself by a method of his choice. In the previous study, there was a trend toward a reduced failure rate and a decreased time for insertion with the ultrasound technique. In this study, the investigators will introduce the research to the first-year Residents and repeat the exercise during their second and third year of training in a longitudinal fashion to assess the progress during anesthesia training. The investigators plan to enroll eight residents from the first-year class. Each resident will perform eight arterial catheter placements with each technique. In addition, compared to the previous study, a more advanced ultrasound machine will be used which will provide better visualization of the radial artery.
02

Conditions studied

  • Surgeries Requiring Arterial Lines

Keywords

  • arterial lines
03

In context

Lead sponsor

Rutgers, The State University of New Jersey is the lead sponsor of 496 studies on the registry; 130 are open to participants now.

Of its 38 completed or terminated interventional studies of FDA-regulated products, 30 (79%) have results posted.

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

04

Who can participate

Ages eligible
25 Years to 35 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

CA 1 and CA 2 residents assigned to surgical patients who require arterial lines due to complex surgical procedures

Inclusion criteria

  • resident in training is agreeable to consent

Exclusion criteria

Exclusion Criteria:

  • None
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
4 participants (actual)

Groups and cohorts

  • CA 1 and 2 anethesia residents

    palpation technique

    Other: palpation technique

  • Ca1 and 2 residents

    ultrasound guided technique

    Behavioral: ultrasound technique

Interventions

  • Behavioralultrasound technique

    instruction in the ultrasound technique

  • Otherpalpation technique

    placement of a line via palpation technique

06

What researchers measure

Primary outcomes

  1. time to successful placement of catheter

    Time frame: residents to be timed over 2 years

07

Study locations

1 site
  • University Hospital
    Newark, New Jersey 07101, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 28, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01757314
Lead sponsor
Rutgers, The State University of New Jersey
Responsible party
Sponsor
First posted
Dec 28, 2012
Start date
Oct 2012
Primary completion
Jun 2015
Completion
Jun 2015
Last update
Sep 28, 2016

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Sep 2015. You cannot join it, but the record below documents what was studied.

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