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Biomedical subjects

B Arnaud

Publications and source records attributed to B Arnaud.

At least 19 recordsLinked to original sources
PubMed1992

[Diagnosis by Doppler color echography of dural carotid-cavernous fistula of ophthalmological manifestation].

The case reported here, concerns a spontaneous low-flow fistula between the external carotid arterial network and the cavernous sinus, with ophthalmological symptoms (exophthalmos, red eye) in an old woman with cardiac failure. The shunt was diagnosed by color-Doppler-imaging, which showed a flow reversal with a systolic component in the superior and inferior enlarged ophthalmic veins. This finding led the authors to extend the arterial filling sequence since the shunt was not detectable on standard arterial views. Embolization was performed during angiography which remains necessary to localize the shunt and to treat the fistula. The clinical symptoms progressively returned to normal and the correction of the hemodynamic disturbances could be followed by color-Doppler imaging, a non-invasive technique which can be easily repeated.

Aged↗
PubMed1990

[Arterial occlusion associated with toxoplasmic chorioretinitis].

The authors report a case of unusual toxoplasma chorioretinitis presenting a branch retinal occlusion of an artery passing through the acute necrotic focus. This complications has been very rarely described previously and may have been caused by the acute retinal necrosis. Arterial inflammatory phenomena constitute another etiologic hypothesis. As this branch vascular obstruction may change the appearance of the fundus and obscure the initial inflammatory focus, ocular toxoplasmosis should be included in the differential diagnosis of branch retinal vascular occlusion associated with posterior uveitis, particularly in young patients.

Adult↗
PubMed1990

[A case of post-traumatic occlusion of the central retinal artery].

We report a case of central retinal artery occlusion following a minor ocular injury. The occlusions are an uncommon but well following some surgical operations on the eyeball, the eyelids or the nose. They probably result from an arterial spasm which trigger mechanisms are not very well known.

Adult↗
PubMed1989

[Mucocele of ophthalmologic expression and treatment apropos of 46 cases].

Mucoceles of the facial sinuses are benign tumors. They consist of a pouch made up from altered sinusal mucosa containing mucus ant inflammatory exudate. This tumors have a tendency to distension and to erode the bony walls. Their common site is in the anterior frontoethmoidal, rarely in the posterior ethmoidal or sphenoidal and exceptionally in the maxillary sinuses. They grow progressively at the expense of the eye and its annexes. Standard radiology is the main diagnostic key, but the scanner is essential to determine the extension and to evaluate the integrity of the posterior wall of the frontal sinus. Surgical intervention is the only way to treat a mucocele. The way of access to the mucocele can be either via the inferior way of Jacques or via the superior way of neurosurgical approach.

Diplopia↗
PubMed1986

[Role of acute normovolemic hemodilution in treating retinal venous occlusions].

The supposed state of retinal venous occlusions by a thrombus has led to the use of diverse antithrombotic treatments (heparin, fibrinolytic agents). This theory being considered at the moment as controversial, haemorheological theories being more particularly favoured, other treatments are proposed in an attempt to better retinal microcirculation, and this by changing the blood viscosity parameters. The study reported here compared the effects on recovery of visual acuity of retinal venous occlusion patients of anticoagulant treatment alone, haemodilution alone, or both together. After initial ophthalmic assessment, twenty-five patients were randomly assigned to one of three groups: group I (n = 5; mean age 62 +/- 14 yr) received heparin for 21 days, followed by antivitamin K drugs for a further 30 days; group II (n = 10; mean age 54 +/- 16 yr) were acutely hemodiluted with 40,000 daltons molecular weight dextran, bringing the haematocrit to between 0.25 and 0.30; on day 2, the same anticoagulant treatment as in group I was associated; group III (n = 10; mean age 58 +/- 18 yr) were only hemodiluted. The hemodiluted state was maintained for 21 days. A biological assessment was carried out for the three groups on days 1, 2, 7, 14, 21 and 30 (haematocrit, fibrinogen level, platelet count, kaolin-cephalin time, heparin level). The evolution of visual acuity was assessed on days 7, 14, 21, 30, 60 and 90. Mean visual acuity was assessed on days 7, 14, 21, 30, 60 and 90. Mean visual acuity was virtually the same for the three groups on day 0.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗
PubMed1978

[Ocular localization appearing in a child with acute lymphoblastosis after hematological remission for 18 months].

Case report of a 4-year-old girl in whom a unilateral ocular localization appeared after 1 1/2 year of maintained remission of acute lymphoblastic leukaemia. The evolution of this localization can be divided in three phases: 1. During the first 17 months, an apparent simple relapsing conjunctivitis of the left eye. 2. During the following 5 months, repeated episodes of the left iritis with mydriasis and discolouration of the iris. 3. Finally, left uveitis involving the anterior chamber, with hypopion, hyphaema and glaucoma; the clinical presentation at this stage was suggestive of ocular lymphoblastosis. Radiotherapy to the lesion (total dose, 1 200 rads) was quickly followed by resolution without sequelae. No relapse was observed during the following 30 months, till death. The ocular disease remained the only manifestation of leukaemia during its evolution. A haematological relapse occurred 11 months after cure of the iritis, followed 1 year later by a second, treatment-sensitive relapse, and finally by a third, fatal relapse. The patient survived 5 years 9 months.

Child, Preschool↗