Lukin A, Polić S, Rumboldt Z, Bagatin J, Rakić D, Kuzmanić A
Klinika za unutarnje bolesti, KBC Split.
Lijec Vjesn. 1996 May-Jun;118(5-6):127-8.
Heart auscultation has one of the key roles in beside diagnosis, especially in patients with cardiovascular diseases. Sometimes, because of the human cars' low sensitivity, a problem emerges in the proper evaluation of heart sounds and murmurs of lower frequencies. Our study compared two stethoscopes, the classic acoustic stethoscope (Littmann 2120) and an electronic one with the sound amplifier and the noise filtering system (Medmax2) in 10 patients examined by 10 physicians. Significantly better detection of low frequency sounds was found in favour of electronic stethoscope (chi 2 = 17.9; p < 0.0001). It is concluded that the selective amplificator improves the stethoscope performance and has its place in everyday bedside practice, especially in departments of cardiology.
心脏听诊在床旁诊断中起着关键作用之一，尤其是在患有心血管疾病的患者中。有时，由于人耳的敏感性较低，在正确评估低频心音和杂音时会出现问题。我们的研究比较了两种听诊器，经典的声学听诊器（Littmann 2120）和一种带有声音放大器和噪声过滤系统的电子听诊器（Medmax2），由10位医生对10名患者进行检查。结果发现，电子听诊器在检测低频声音方面明显更好（卡方 = 17.9；p < 0.0001）。得出的结论是，选择性放大器可提高听诊器的性能，在日常床旁实践中占有一席之地，尤其是在心脏病学科室。
