On the pathophysiology of left ventricular aneurysm. An analysis by cineangiography and videodensitometry

In 16 patients with left ventricular aneurysm, ventriculography has been performed and recorded upon videotape. By means of videodensitometer the ejection fraction of the total ventricle and its parts have been analysed. The videodensitometric result explained the ejection fraction pattern which is caused by the moment of the contrast medium in different parts of the ventricle. The regurgitation phenomenon in the contractile and non-contractile parts of the ventricle is explained by a turbulent movement of contrast medium between the different parts of the ventricle. This turbulence should be included in the criteria of a left ventricular aneurysm.