P-Wave Terminal Force in Dogs With Myxomatous Mitral Valve Disease.

摘要: Abstract P-wave terminal force (PTF) is accepted as an electrocardiographic criteria to assess left atrial abnormalities in humans. In this study, the applicability of PTF dogs with myxomatous mitral valve disease (MMVD) was evaluated, and compared its ability identify dilatation 4 other derived parameters. Seventy-four echocardiographically diagnosed MMVD were recruited for prospective cross-sectional study. Also, 47 healthy included serve controls. All underwent physical, standard echocardiographic examinations prior enrollment. Electrocardiographic measurements obtained from simultaneous recordings at three different locations precordial lead V1. defined deflection following second half P-wave, best documented first third right intercostal spaces. those locations, negative recognized a positive undulation baseline P-wave. duration measured either or spaces had poor weak correlations (P