School of Psychology, The University of Queensland, St Lucia, QLD, 4072, Australia.
School of Psychology, The University of Queensland, St Lucia, QLD, 4072, Australia; School of Information Technology and Electrical Engineering, The University of Queensland, St Lucia, QLD, Australia; School of Clinical Medicine, The University of Queensland, St Lucia, QLD, 4072, Australia.
Appl Ergon. 2019 Jul;78:110-119. doi: 10.1016/j.apergo.2019.01.013. Epub 2019 Mar 4.
We performed a randomised controlled trial comparing two kinds of earcons that could provide intermittent pulse oximetry information about a patient's oxygen saturation (SpO) and heart rate (HR). Timbre-earcons represented SpO levels with different levels of timbre, and pitch-earcons with different levels of pitch. Both kinds of earcons represented HR with tremolo. Participants using pitch-earcons identified SpO levels alone, and both SpO plus HR levels, significantly better than participants using timbre-earcons: p < .001 in both cases. However, there was no difference between earcon conditions in how effectively HR was identified, p = .422. For both kinds of earcons, identification of SpO levels was more compromised by simultaneous changes in HR than identification of HR levels was compromised by simultaneous changes in SpO, suggesting asymmetric integrality. Overall, pitch-earcons may provide a better intermittent auditory pulse oximetry display than timbre-earcons, especially for clinical contexts when quiet is needed.
我们进行了一项随机对照试验，比较了两种耳标，它们可以提供有关患者血氧饱和度 (SpO) 和心率 (HR) 的间歇性脉搏血氧仪信息。音色耳标用不同的音色来表示 SpO 水平，音调耳标用不同的音高来表示。两种耳标都用震音表示 HR。使用音调耳标的参与者单独识别 SpO 水平，以及 SpO 加 HR 水平，明显优于使用音色耳标的参与者：两种情况下 p<0.001。然而，在识别 HR 的有效性方面，耳标条件之间没有差异，p=0.422。对于两种耳标，HR 同时变化对 SpO 水平识别的影响比对 HR 水平识别的影响更大，这表明不对称完整性。总的来说，音调耳标可能比音色耳标提供更好的间歇性听觉脉搏血氧仪显示，特别是在需要安静的临床环境中。
