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Biomedical subjects

M Terdjman

Publications and source records attributed to M Terdjman.

33 records · Page 2Linked to original sources
PubMed1983

[Patency of the foramen ovale in paradoxical embolism. Detection by contrast echocardiography and the cough provocation test].

Five patients with suspected paradoxical embolism were investigated for patent foramen ovale by contrast echocardiography. Right-to-left shunting was demonstrated in 3 patients: during a Valsalva manoeuvre in one and during coughing fits in all three. Patency of the foramen ovale was confirmed by cardiac catheterization in these 3 patients. In 2 patients the foramen was not patent and the diagnosis of paradoxical embolism was not confirmed. In two other patients, the right and left atrial pressures were measured simultaneously during a Valsalva manoeuvre and during coughing. The normal pressure gradient between the two atria was suppressed during the relaxation stage, resulting in decreased curvature of the interatrial septum which facilitated the flow of blood from the inferior vena cava into the left atrium. Coughing appears to be a simpler and more sensitive test than the Valsalva manoeuvre to induce transient right-to-left atrial shunting.

Cough↗
PubMed1983

[Two-dimensional contrast echocardiography during the drainage of hemopericardium with tamponade].

In patients with cardiac tamponade, withdrawing blood during pericardiocentesis raises questions as to its origin: pericardium or cardiac cavities? These questions can be answered by bidimensional contrast echocardiography after reinjection of a few millilitres of the blood-stained fluid removed. Microcavitations surrounding the heart and vanishing within a few minutes indicate that blood comes from the pericardium. Microcavitations obscuring the right atrium or ventricle and washed away by the blood flow in a matter of seconds indicate that these cavities have been punctured.

Adult↗
PubMed1982

[Update on the study of true and false left ventricular aneurysms by 2-dimensional echocardiography].

2D echocardiography is a great advance in the study of left ventricular aneurysms. The wide field of visualisation and the numerous planes of examination obtained from different transducer positions allow precise spatial orientation and reliable analysis of regional wall movement. An aneurysm appears as a clear and constant bulge of a segment of left ventricular wall in both diastole and systole. Antero apical aneurysms are the commonest variety. The sensitivity and specificity of 2D echo in the detection of ventricular aneurysms are high. Thrombosis within the aneurysmal bulge may also be detected (33-38%). Pseudo-left ventricular aneurysms are easily identified as a chamber communicating with the ventricle by means of a narrow neck; the width of this neck is the main echocardiographic feature differentiating pseudo and true ventricular aneurysms. 2D echocardiography gives valuable information on the state of the remaining contractile area, an important prognostic factor when surgical resection of the aneurysm is being considered.

Diagnosis, Differential↗
PubMed1976

[Diagnosis of myxomas of the left auricle by ultrasonic echography].

The two case histories of myxoma of the left auricle reported in this paper illustrate how echography is a diagnostic method which is non-invasive, simple, and relatively accurate provided that different angles of incidence are used, and especially the "root aorta-left auricle" incidence. It is indicated especially in cases with variable mitral murmurs on auscultation, but also where there is a very large left auricle, heart failure of unknown cause, or even an apparently straightforward case of mital stenosis. Moreover, as one of these case histories demonstrates, the technique allows both short and long term postoperative follow-up to be carried out with ease and safety, so that a possible recurrence can be picked up later.

Adolescent↗
PubMed1975

[Pharmacodynamic study of myocardial contraction using ultrasonic echography during isoproterenol perfusion in the normal subject].

An echographic study, both before and under isoproterenol infusion, was performed on 50 normal subjects. The movements of the posterior wass of the left ventricle were found to be averagely increased of 62% as regards the amplitude, 114% for the mean speed and 124% for the maximum speed of contraction. The transcerse diameter of the left ventricular cavity decreased by 5.25%. The circumferential fibres shortening speed expressed in circumference by second increased by 128%. An uninvasive method, echography, as cineangiography, makes it possible to assess the myocardial contractility on the basis of measurement of the average speed of circumferential fibres and of the diameter of the left ventricle.

Adult↗