Biomedical subjects

C Verdière

Publications and source records attributed to C Verdière.

3 recordsLinked to original sources

PubMed1985

[Angiocardiographic diagnosis in right ventricular dysplasias].

Right ventricular dysplasia (RVD) is characterised by fatty and fibrous infiltration of the right ventricular wall and usually presents clinically with ventricular arrhythmias. The aim of this study was to determine the morphological changes of RVD and establish diagnostic criteria applicable in cases with atypical clinical signs or electrocardiographic changes. The angiocardiographic data of 10 cases of RVD was reviewed. 8 cases were complicated by right ventricular arrhythmias. The other 2 cases were not arrhythmogenic but had highly suggestive ECG changes; there were no other causes of right ventricular disease. Selective right ventriculography was performed with the catheter positioned in the inflow tract distal to the moderator band. In the 8 cases without tricuspid regurgitation there was one constant finding: the presence of parietal fissuration with massive impregnation of the ventricle distal to the moderator band. Two signs were commonly observed; the stagnation of contrast in the inferior regions of the right ventricle during left ventricular opacification (6/8 cases); irregular opacification of the pulmonary infundibulum (5/8 cases); an infundibulor aneurysm was observed in 1 case. Biometrical data was normal in all 8 cases compared with a control group of 10 normal subjects: the right ventricular disease was segmental and not diffuse. It was associated with a moderate alteration of left ventricular function and with segmental abnormalities of wall motion in 2 cases. None of these signs were observed in the right ventriculographies of 7 cases of typical dilated cardiom-opathies. These 4 signs were not found in 2 cases with tricuspid regurgitation where changes were essentially limited to a dilatation of the right ventricular inflow tract.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗

PubMed1985

[Prospective study of the prevalence of coronary involvement in isolated aortic stenosis].

From 1980 to 1982, 148 consecutive patients with isolated aortic stenosis (AS) were studied prospectively with coronary angiography. Significant coronary artery disease was discovered in 27 patients (18.4 percent of cases), with involvement of the left main coronary artery 4 times (15 percent of cases), three-vessel involvement 10 times (37 percent of cases), two-vessel involvement 8 times (30 percent of cases), and single-vessel involvement 9 times (33 percent of cases). Clinical information such as age, sex, the existence of angina (present in 81 out of 148 patients, or 54.7 percent of cases), or electrocardiographic findings could not accurately predict coronary artery involvement except for the previous history of a myocardial infarction. Five patients with coronary artery lesions had no manifestations of angina, comprising 18.5 percent of patients with coronary artery disease, 3.4 percent of the entire group of 148 patients with AS, and 7 percent of patients without angina. This study's originality resides in the fact that it is a prospective study which demonstrates that coronary artery lesions associated with AS can often be severe and can not be predicted without coronary angiography. No other examination can reliably identify the association of these two conditions, making coronary angiography a routine part of the preoperative evaluation of AS if these lesions are to be discovered.

Adult↗

PubMed1984

[Are post-infarction left ventricular aneurysms distensible? Volumetric study using angiography].

During left ventriculography, post-infarction left ventricular aneurysms present as diastolic deformations of the ventricular contour which, when accentuated during systole, give rise to paradoxical systolic expansion. The volumic consequences of thie parietal dyskinesia were studied in 10 cases of chronic anterior wall aneurysm. The borders of the aneurysm were determined by Watson's technique: diastolic and systolic volumes and endocardial surface areas were measured using a computer. In 9 out of 10 cases, neither volume nor endocardial surface area of the aneurysm varied from diastole to systole. Systolic distension of the aneurysm was observed in only one case. In the remainder, paradoxical systolic expansion was related to a charge in the shape of the aneurysm and to overall movement of the heart. The angiographic observations are important for the understanding of the physiopathology of post-infarction aneurysm and for choice of techniques for surgical treatment.

Adult↗