Homma Y, Matsuzaki M, Ogasawara H, Munakata M
Comput Biomed Res. 1985 Dec;18(6):502-9. doi: 10.1016/0010-4809(85)90026-6.
We constructed a new phonopneumograph that provides real-time tracing of lung sounds at a high speed without the steps of memory and playback by use of a thermal printer system. Accuracy of the recorded wave form was considered adequate even at the maximum speed of 750 mm/sec for detailed wave form analysis. The device is easily connected to a recording system for respiratory flow rate or volume. To test the clinical usefulness of this portable instrument, the difference in the interpretation of four types of basic adventitious lung sounds by different listeners was examined. The "trained" group who had experience in using this instrument interpreted adventitious lung sounds more accurately than did the "untrained" group. Even in the "trained" group, however, the accuracy of identifying certain sounds was sometimes low. These results suggest that this device is useful for bedside interpretation of adventitious lung sounds or for training of auscultation ability.
我们构建了一种新型的呼吸音描记仪，它通过热打印机系统，无需存储和回放步骤即可高速实时追踪肺部声音。即使在750毫米/秒的最大速度下进行详细的波形分析，记录波形的准确性也被认为是足够的。该设备易于连接到呼吸流速或容积的记录系统。为了测试这种便携式仪器的临床实用性，我们研究了不同听众对四种基本附加肺音的解读差异。有使用该仪器经验的“训练有素”组比“未训练”组更准确地解读附加肺音。然而，即使在“训练有素”组中，识别某些声音的准确性有时也很低。这些结果表明，该设备对于床边附加肺音的解读或听诊能力的训练是有用的。
