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Biomedical subjects

A Janin

Publications and source records attributed to A Janin.

At least 181 records · Page 10Linked to original sources
PubMed1987

[Pure bronchial adenoma. Anatomico-clinical and ultrastructural study of a case].

We report a case of monomorphic bronchial cystadenoma (or mucous gland adenoma). This exceptional tumor (only 34 cases reported up to now) is benign, but a lobectomy is often necessary because of severe inflammatory lesions of the surrounding lung. Ultrastructurally it was different from the other tumors of bronchial glands, since it contained mucous cells, myoepithelial cells, and oncocytic cells, and the basement membrane was thickened.

Adenoma↗
PubMed1984

[Mucocutaneous and salivary manifestations of the graft vs host reaction after bone marrow transplantation].

Mucocutaneous reactions to graft versus host disease may be acute (maculopapular rash, scarlatiniform rash, epidermal necrosis), related to T lymphocyte aggression to basal layer cells, or chronic (lichenoid, or even poikilodermic and sclerous lesions) when a complex mechanism is involved. The syndrome sicca is a major manifestation of graft versus host disease of a chronic type, histology showing moderate lymphocyte infiltration and then marked fibrosis.

Bone Marrow Transplantation↗
PubMed1980

[Chronic atrophic polychondritis. Report of three cases, with ultrastructural study by electron microscopy].

The authors report 3 cases of chronic atrophic polychondritis with clinical signs characteristic of the disease. The 3 patients had deafness of perceptive type, very severe in one case. In one case, the relationship between inflammatory rheumatism and rheumatoid arthritis is discussed. The 3 cases include a pathological study under the electron microscope of the cartilage of the ear. Certain ultrastructural peculiarities observed (dense perichondrocyte granules) are compared with the data in the literature.

Adult↗
PubMed1979

Effects of amiodarone on cardiac and coronary hemodynamics and on myocardial metabolism in patients with coronary artery disease.

While the antiarrhythmic effects of amiodarone are well-documented, its hemodynamic effects are not. We injected 5 mg/kg amiodarone i.v. in 16 patients undergoing coronary arteriography. Heart rate did not change. Aortic (systolic, diastolic and mean) and left ventricular (systolic and end-diastolic) pressures decreased significantly (p less than 0.01) at 5 and 15 minutes; systemic vascular resistance also fell significantly (p less than 0.05), while cardiac index increased slightly but significantly (p less than 0.05). Coronary vascular resistance decreased significantly (p less than 0.01) and coronary sinus blood flow rose in most patients, from a mean of 138 ml/min to 153 ml/min at 5 minutes (p less than 0.02); it then returned toward the control value at 15 minutes (mean 145 ml/min). Myocardial metabolism of O2 was normal and unchanged. Metabolism of lactate improved in five patients, remained unchanged in seven and deteriorated transiently in four. No undesirable hemodynamic and clinical side effects occurred when the drug was administered slowly. We conclude that amiodarone is a powerful systemic and coronary vasodilator. In addition to its present indications in the treatment of angina pectoris and arrhythmias, the drug might be very useful as an afterload-reducing agent.

Adult↗
PubMed1977

[Concomitant Prinzmetal angina and coronary angina. Angiographic study in 13 patients (author's transl)].

Is coronary spasm the explanation for the paroxysmal myocardial ischaemia of Prinzmetal angina? Although considered adventurous two or three years ago, this hypothesis has been supported by the publication of approximately 15 cases in which the cause and effect relationship seemed to be proven by spasm seen on coronary arteriography at the same time as a typical attack. The authors report 13 cases of this type (the first of which was published in 1972). Spasm occurred in a normal coronary system in 3 cases, whilst in 2 cases there were only non-stenotic plaques of atheroma. In 8 cases, spasm occurred at the site of or distant from a significant atheromatous lesion. In 8 cases, spasme involved the right coronary whilst in 3 cases the A.I.V. was affected and in 2, two of the three main coronary trunks. In the light of their experience, the authors stress two points: --in many cases, nitroglycerine alone is not sufficient to relieve the spasm, and only the in situ injection of papaverine had a constant effect; --it is essential to opacify both coronary systems during a typical attack in order to obtain proof of spasm.

Adult↗
PubMed1977

[Study of survival in angiographically determined ischemic cardiopathies: Apropos of 345 medically treated patients].

A study of 345 patients with ischaemic heart disease due to coronary arteriosclerosis which had been demonstrated by coronary arteriography, and seen between November 1967 and December 1974, was directed towards finding out what had happened to the patients so that, by an actuarial study of their survival, the prognostic significance of the arteriographic and ventriculographic studies could be determined. The prognostic value of the clinical findings has shown the importance:--of the presence of clinical left ventricular failure;--of the presence of coronary insufficiency with frequent attacks; of the presence of sequelae of infarction as seen on the ECG at rest;--on the length of the symptomatic history before arteriography. The assessment of the prognostic potential of the arteriographic findings has emphasised:--the fundamental importance of diffusion of stenoses and occlusions of several main coronary trunks;--the high risk if the lesion affects the left coronary trunk; the high risk of prognostic significance of lesions on the IVA. The prognostic significance of ventricular lesions as demonstrated on ventriculography in the right anterior oblique incidence has shown the sinister significance of extensive lesions of more than two or three of the seven ventriculographic segments and of lesions with dilatation, whereas very localised static plaques hardly influence the prognosis at all.

Adult↗
PubMed1976

[Myocardial infarction in early postoperative complications in operations of myocardial revascularization: incidences, clinical study and mechanisms].

A study of the electrocardiograms and enzyme levels after surgery to revascularise the myocardium in a group of 174 consecutive patients has allowed us to demonstrate 19 cases of early postoperative myocardial infarction (EPOMI) (10.9%). 10 of these cases had no clinical features of EPOMI; 9 had clinical signs (collapse of altered systemic pressures, arrhythmias) or haemodynamic disorders (raised left atrial pressure). The EPOMI turned out to be fatal in 3 cases (19%), and to be complicated by left ventricular failure in 6 cases (32%). Post-operative coronary arteriography showed that 8 out of 20 grafts were occluded in 13 patients; ventriculography showed the myocardial damage consequent upon EPOMI in 8 patients out of 12; Autopsy showed graft occlusion in each of the two patients. The means of diagnosis of EPOMI must be electrocardiographic and enzymatic. An attempt has been made to study the causes of EPOMI: aortocoronary bypass hazardous because of poor distal supply (6 cases) or surgical difficulties (6 cases); progression of the atheromatous lesions (3 cases); infarct already inicipient at the time of surgery (1 case). EPOMI is a complication of cardiac surgery which must be recognised; the mechanisms are diverse, and any of the factors which are relevant to the surgical procedure may be a cause.

Adult↗