Sestini P, Renzoni E, Rossi M, Beltrami V, Vagliasindi M
Institute of Respiratory Diseases, University of Siena, Italy.
Eur Respir J. 1995 May;8(5):783-8.
New educational technologies might help to compensate for the decrease in time and emphasis dedicated to physical examination in medical training. This may, in particular, be applicable for improving the skills in auscultation of the chest. We investigated whether a multimedia presentation of acoustic and graphic characteristics of lung sounds could improve the learning of pulmonary auscultation by medical students, in comparison with conventional teaching methods. We studied 48 medical students without clinical experience, who had received conventional formal teaching on chest examination. Chest auscultation skills were evaluated using an inaccuracy score for the student's auscultation report on three patients, selected according to a standardized procedure. After a baseline evaluation, 27 students in groups of 5-10, participated in a multimedia seminar on lung sounds during which digitized lung sounds were played and the corresponding time-expanded waveform and frequency spectrum were commented on and displayed on a computer. The remaining 21 students received conventional bedside training, acting as control group. The following week, all the students underwent a second evaluation of chest auscultation skills. No differences in the inaccuracy score were observed between the two groups in the preliminary test. However, in the second postintervention assessment, the inaccuracy score of the students who had followed the seminar (11.2 +/- 1.3 points) was significantly lower than that of the controls (16.6 +/- 1.6 points). The answers to a feedback questionnaire confirmed that the great majority of the students found the association of the acoustic signals with their visual image to be useful for learning and understanding lung sounds.(ABSTRACT TRUNCATED AT 250 WORDS)
新的教育技术可能有助于弥补医学培训中体格检查时间和重视程度的减少。这尤其可能适用于提高胸部听诊技能。我们调查了与传统教学方法相比，肺部声音的声学和图形特征的多媒体展示是否能改善医学生对肺部听诊的学习。我们研究了48名没有临床经验的医学生，他们接受过胸部检查的传统正规教学。根据标准化程序选择三名患者，通过学生听诊报告的不准确分数来评估胸部听诊技能。在基线评估后,27名学生分成5至10人的小组，参加了一个关于肺部声音的多媒体研讨会，会上播放了数字化的肺部声音，并在计算机上对相应的时间扩展波形和频谱进行了评论和展示。其余21名学生接受传统的床边培训，作为对照组。第二周，所有学生都接受了胸部听诊技能的第二次评估。在初步测试中，两组之间的不准确分数没有差异。然而，在干预后的第二次评估中，参加研讨会的学生的不准确分数(11.2±1.3分)显著低于对照组(16.6±1.6分)。一份反馈问卷的答案证实，绝大多数学生发现声学信号与其视觉图像的关联对学习和理解肺部声音很有用。(摘要截短至250字)
