Ultrasound Measured Inferior Vena Cava Diameter Performed by Non-Sonographer Nurses

2.50
Hdl Handle:
http://hdl.handle.net/10755/306566
Category:
Abstract
Type:
Poster
Title:
Ultrasound Measured Inferior Vena Cava Diameter Performed by Non-Sonographer Nurses
Author(s):
Holbrook-Emmons, Victoria; De Lorenzo, Col. Robert A.
Lead Author STTI Affiliation:
Non-member
Author Details:
Victoria Holbrook-Emmons, MSN, RN, CEN, veemmons@swbell.net; Col. Robert A. De Lorenzo, MD, MSM, FACEP
Abstract:

Research Abstract

Purpose: Sonographic measurement of the Inferior Vena Cava (IVC) diameter is a potentially-important non-invasive estimate of fluid status. We researched whether nurses without prior ultrasound experience could accurately obtain vena cava diameters on models and subjects in comparison to expert sonographer values.

Design: Prospective educational study using a pre-and post test knowledge test and a comparison of subject imaging performance to an expert sonographer.

Setting: Urban teaching medical center.

Participants: Emergency nurses and a convenience sample of volunteer patients selected from the emergency department (ED).

Methods: Nurses completed a written survey and pre-test to document prior training and experience in ultrasound and assess baseline knowledge. A structured training program (3.5 hours in length) was provided over three sessions. Training consisted of didactics, practice on phantoms and classmates, and one volunteer patient in the ED. Subjects then each measured IVC diameters on 3 different volunteer patients in transverse and longitudinal orientations using images frozen by the subject-sonographer. An expert sonographer, blinded to subject results, performed the same examination. Correlations were determined and a post-training written exam was completed and results compared to the pre-test using a pair-wise t-test.

Results: 14 subjects participated (7 males), with a mean of 8 years experience (range 2-18). Subject-expert R-value correlation for the longitudinal orientation was 0.68 (95% CI 0.35-0.76) and 0.59 (95% CI 0.47-0.81) for the transverse. Post-test scores improved 8.2 percentage points (95% CI 4.0-12.4) from 83.3% to 91.5%.

Implications: Following a brief training course, non-sonographically experienced nurses show moderately good correlation when measuring the IVC diameter as compared to expert measurements, with better performance demonstrated in the longitudinal orientation.

Required Disclaimer: The opinions or assertions are those of the authors and do not necessarily reflect the position of the Army Medical Department or the Department of Defense.

Keywords:
Nurse expertise and sonographic measurement
Repository Posting Date:
9-Dec-2013
Date of Publication:
9-Dec-2013
Conference Date:
2013
Conference Name:
2013 ENA Annual Conference
Conference Host:
Emergency Nurses Association
Conference Location:
Nashville, Tennessee, USA
Description:
2013 ENA Annual Conference Theme: Safe Practice, Safe Care. Held at Gaylord Resort and Convention Center
Note:
This is an abstract-only submission. If the author has submitted a full-text item based on this abstract, you may find it by browsing the Virginia Henderson Global Nursing e-Repository by author. If author contact information is available in this abstract, please feel free to contact him or her with your queries regarding this submission.

Full metadata record

DC FieldValue Language
dc.language.isoen_USen_GB
dc.type.categoryAbstracten_GB
dc.typePosteren_GB
dc.titleUltrasound Measured Inferior Vena Cava Diameter Performed by Non-Sonographer Nursesen_GB
dc.contributor.authorHolbrook-Emmons, Victoriaen_GB
dc.contributor.authorDe Lorenzo, Col. Robert A.en_GB
dc.contributor.departmentNon-memberen_GB
dc.author.detailsVictoria Holbrook-Emmons, MSN, RN, CEN, veemmons@swbell.net; Col. Robert A. De Lorenzo, MD, MSM, FACEPen_GB
dc.identifier.urihttp://hdl.handle.net/10755/306566-
dc.description.abstract<p>Research Abstract</p><p>Purpose: Sonographic measurement of the Inferior Vena Cava (IVC) diameter is a potentially-important non-invasive estimate of fluid status. We researched whether nurses without prior ultrasound experience could accurately obtain vena cava diameters on models and subjects in comparison to expert sonographer values.</p><p>Design: Prospective educational study using a pre-and post test knowledge test and a comparison of subject imaging performance to an expert sonographer.</p><p>Setting: Urban teaching medical center.</p><p>Participants: Emergency nurses and a convenience sample of volunteer patients selected from the emergency department (ED).</p><p>Methods: Nurses completed a written survey and pre-test to document prior training and experience in ultrasound and assess baseline knowledge. A structured training program (3.5 hours in length) was provided over three sessions. Training consisted of didactics, practice on phantoms and classmates, and one volunteer patient in the ED. Subjects then each measured IVC diameters on 3 different volunteer patients in transverse and longitudinal orientations using images frozen by the subject-sonographer. An expert sonographer, blinded to subject results, performed the same examination. Correlations were determined and a post-training written exam was completed and results compared to the pre-test using a pair-wise t-test.</p><p>Results: 14 subjects participated (7 males), with a mean of 8 years experience (range 2-18). Subject-expert R-value correlation for the longitudinal orientation was 0.68 (95% CI 0.35-0.76) and 0.59 (95% CI 0.47-0.81) for the transverse. Post-test scores improved 8.2 percentage points (95% CI 4.0-12.4) from 83.3% to 91.5%.</p><p>Implications: Following a brief training course, non-sonographically experienced nurses show moderately good correlation when measuring the IVC diameter as compared to expert measurements, with better performance demonstrated in the longitudinal orientation.</p><p>Required Disclaimer: The opinions or assertions are those of the authors and do not necessarily reflect the position of the Army Medical Department or the Department of Defense.</p>en_GB
dc.subjectNurse expertise and sonographic measurementen_GB
dc.date.available2013-12-09T16:59:55Z-
dc.date.issued2013-12-09-
dc.date.accessioned2013-12-09T16:59:55Z-
dc.conference.date2013en_GB
dc.conference.name2013 ENA Annual Conferenceen_GB
dc.conference.hostEmergency Nurses Associationen_GB
dc.conference.locationNashville, Tennessee, USAen_GB
dc.description2013 ENA Annual Conference Theme: Safe Practice, Safe Care. Held at Gaylord Resort and Convention Centeren_GB
dc.description.noteThis is an abstract-only submission. If the author has submitted a full-text item based on this abstract, you may find it by browsing the Virginia Henderson Global Nursing e-Repository by author. If author contact information is available in this abstract, please feel free to contact him or her with your queries regarding this submission.en_GB
All Items in this repository are protected by copyright, with all rights reserved, unless otherwise indicated.