[Prognostic importance of ballistocardiographic indices in myocardial contractile function during a mitral commissurotomy during the late stages of mitral stenosis].

In 100 patients under retrospective analysis was the role of ballistocardiograms taken before operation for prognosis of the myocardium contractive function during narcosis and operation. The ballistocardiographic record made on the Starr table enables, with the aid of the work and power formula, to quantitatively estimate the stage of narcosis and operation.