G Ital Cardiol. 1975;5(6):968-70.
Polygraphical tracings of 34 carriers with mitral prosthesis and 11 with aortic prosthesis were studied. The most significant observations were: 1) that it is not possible to record the mitralic click of the opening constantly, and that the correlation between the width of mitralic clicks is inferior to that which can be observed in the other types of artificial valve; the time of isovolumetric contraction was likewise inferior; 2) that the correlation between the width of the two aortic clicks is inferior to that observed in the other types of aortic valve; the time of expulsion from the left ventricle is longer, probably in connection with the fact that the moment of recording, the patients had not yet achieved a normal functional capacity.
对34例二尖瓣置换术患者和11例主动脉瓣置换术患者进行了多导记录研究。最显著的观察结果是：1）无法持续记录二尖瓣开放喀喇音，二尖瓣喀喇音宽度之间的相关性低于其他类型人工瓣膜中可观察到的相关性；等容收缩时间同样较短；2）两个主动脉瓣喀喇音宽度之间的相关性低于其他类型主动脉瓣中观察到的相关性；左心室射血时间较长，这可能与记录时患者尚未达到正常功能能力这一事实有关。
