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Biomedical subjects

B Paris

Publications and source records attributed to B Paris.

42 records · Page 3Linked to original sources
PubMed1979

[Postinfarction left ventricular aneurysm. A method for volume determination and its correlation with hemodynamic and angiographic parameters (author's transl)].

On the hypothesis that encroachment on left ventricular performance by postinfarction aneurysm (An) is related to its size, a method was investigated for the measurement of aneurysmal dimensions. On radioopaque plastic casts grossly ellipsoidal in shape with addition of masses in different position to simulate aneurysms, satisfactory data for volume calculation were obtained by the association of the ellipsoid formula applied to the contractile portion with the formula of the hemispheroid applied to the aneurysmal section, the difference between real and calculated volumes being not more than +/-5%. In 100 Pts. with previous myocardial infarction, showing at ventriculography akinetic-diskinetic segments of the left ventricular wall, the absolute volume of An and its percentage value of the total left ventricular volume (V An%) were measured. A statistical correlation was studied with other hemodynamic and angiographic parameters of left ventricular function. Cardiac index and angiographic stroke volume decreased with increasing V An%, but with a low correlation, of no statistical significance; only for An with a volume of 60% or more C.I. and SV were constantly reduced. The LVEDP, higher than normal in 80% of the cases, rose with increasing V An%, but with a correlation of low statistical significance. The EDV increased progressively and significatively with increasing V An%, resulting therefore in relation with the extension of noncontracting segment.

Angiocardiography↗
PubMed1979

[Post-extrasystolic potentiation for the study of regional left ventricular asynergy (author's transl)].

In 120 P. with ischemic heart disease, left ventricolar wall motion was analyzed from the left ventriculogram in a regular sinus beat as compared to the first beat following one or more premature ventricular contractions (PExP). The response of asynergic segment to PExP was determined with a qualitative as wall as a quantitative technique. Of a total of 225 asynergic segments, 62% showed a positive response to PExP. In the absence of pathologic Q waves in the electrocardiogram, the response was positive in 77% and negative in 23% of the cases. In the presence of Q waves, PExP was present only in 33% of the cases (p less than 0.001). In respect to the severity of asynergy, 68% of 145 hypokinetic segments and 52% of 80 akinetic-dyskinetic segments responded to PExP; in the presence of pathologic Q waves, the number of positive responses decreased to 36% in the case of segmental hypokinesis, and to 31% in the case of more severe asynergy. The study of PExP has appeared as an useful diagnostic technique, capable of detecting a residual myocardial function in left ventricular asynergic segments, even in the presence of electrocardiographic signs of infarction.

Adult↗
PubMed1977

["Idiopathic" chronic paralysis and dilatation of the right atrium].

Electric and mechanical atrial paralysis is a condition usually associated with a primitive or secondary cardiopathy. Only extremely rare cases are characterized by early appearance in young subjects without evidence of cardiac disease of any kind whatever, without character of familiarity, with atrial paralysis being the only abnormality, and are thus defined as idiopathic atrial paralysis. One of these cases (the eighth in the literature, to our knowledge), presented with a complete study and the hypothesis that "chronic idiopathic atrial paralysis" and "idiopathic right atrial enlargement" (sometimes associated, as in this case) may be different manifestations of the same chronic myocardial disease.

Adult↗