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  • Meeting abstract
  • Open Access

Evaluation of a novel simulation method of teaching B-lines: hand ultrasound with a wet foam dressing material

Critical Ultrasound Journal20157 (Suppl 1) :A30

  • Published:


  • Simulated Model
  • Interventional Radiology
  • Correct Answer
  • Simulation Method
  • Video Clip


Lung ultrasound simulations for pathologic conditions are not readily available for bedside teaching. Recently hand ultrasound was introduced as a new model of simulating lung ultrasound including normal lung sliding, stratosphere sign, and lung point. However no effective method of teaching B-lines has been reported.


The aim of this study was to evaluate effectiveness of a novel mode of teaching B-lines made by using hand ultrasound with a wet foam dressing material simulating a wet lung.

Patients and methods

All subjects enrolled were medical school students who were novice for lung ultrasound. All subjects attended a 20-mintutes lecture about lung ultrasound using simulated video clips of A-lines, B-lines, and lung sliding for 20 minutes and 20-minutes post-test was given. A post-test were composed of questions on the choice between A-lines and B-lines and the presence of lung sliding using randomly mixed 20 real and 20 simulated video clips using hand ultrasound with or without a wet foam dressing materials. At the end of the post-test, the correct answer was revealed and discussed. Paired t test was used to compare the each score of A-lines, B-lines, and lung sliding between the real images and simulated models.


There were 56 male and 20 female with mean age of 25.1±2.8. The mean of the total score was 51.9±4.9 for the real video clips and 52.3±5.0 for the simulated models (P=0.485). The mean of the score for correct answers between A-lines and B-lines was 17.5±2.6 for the real video clips and 17.0±2.0 for the simulated clips (P=0.0961) The mean of the score for lung sliding was 16.0±2.7 in real image and 17.6±2.6 in simulated images (P<0.001).


The novel B-line teaching model by using a hand ultrasound with a wet foam dressing material was readily available and effective method to simulate pulmonary interstitial syndrome.

Authors’ Affiliations

Department of Internal Medicine, Seoul National University Bundang Hospital, South Korea
Department of Emergency Medicine, Bundang Jesaeng Hospital, South Korea


  1. Shokoohi H, Boniface K: Hand Ultrasound: A High-fidelity Simulation of Lung Sliding. Acad Emerg Med 2012, 19(9):E1079–83. 10.1111/j.1553-2712.2012.01431.xView ArticlePubMedGoogle Scholar


© Cho et al; licensee Springer. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.