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Biomedical subjects

A Robin

Publications and source records attributed to A Robin.

At least 73 records · Page 4Linked to original sources
PubMed1980

[Visual complications of mitral leaflet prolapse (author's transl)].

Among ten patients with acute ischemic cerebral accident and mitral leaflet prolapse, two women presented with visual disturbances consistent with embolism in the ophthalmic or posterior cerebral circulation. These observations emphasize the importance of thorough cardiovascular assessment in all patients with acute cerebral or ocular ischemia, and we suggest that echocardiography should be part of routine investigation of such patients.

Adult↗
PubMed1980

[Ultrastructural aspect of the different levels of the lacrimal system (author's transl)].

Using the transmission electron microscope and the scanning electron microscope, we have found a different ultrastructure at the different levels of the lacrimal system: 1) tarsal conjonctiva: numerous microvilli on a relief of small valleys; 2) lacrimal punctum: the surface of the cell is flat with sparse microvillosti, sparse cilia and strong intercellular junction; 3) external part of the canaliculus: pavement epithelium with numerous microvillositi and pinocytosis, absence of cilia; 4) internal part of the canaliculus: the microvillositi are very small or absent; 5) lacrimal sac: the cilia are arranged by tufts scattered on this malpighian epithelium; 6) nasolacrimal duct: the cilia are numerous; 7) in the nose the cilia are extremely numerous.

Cilia↗
PubMed1979

Artificially induced active transport of amino acid driven by the efflux of a sugar via a heterologous transport system in de-energized Escherichia coli.

Consistent with the model of an H+ cotransport, amino acid uptake can be driven by a proton gradient generated by an efflux of sugar when the normal energy sources are suppressed. Heterologous countertransport is completely inhibited by uncouplers unlike homologous countertransport. Positive coupling was obtained with methyl thiogalactoside/proline, methyl thiogalactoside/phenylalanine, gluconate/proline; however, the poor coupling efficiency suggests a more complex sequence of reactions.

Amino Acids↗
PubMed1979

Laser scotometry in drusen and pits of the optic nerve head.

Laser scotometry is an accurate means of detecting dense blind spots. A small low-energy spot is guided across the fundus from nonseeing to seeing areas. Patient responses are recorded on fundus photographys, allowing direct correlation with fundus pathology. Accuracy to less than 1 degree is feasible. All typical optic nerve drusen tested with this technique had field defects. In cases of optic nerve pits, dense scotomas correlated with the shape of visible nerve fiber defects rather than with the shape of serous retinal detachments.

Adult↗
PubMed1978

[A new lacrimal intubation set (author's transl)].

The authors report a new lacrimal intubation set made with two very malleable metal probes and with a silicone tube. The system can be used during the repair of the nasolacrimal duct injuries, during dacryorhinocystostomy, and also for the repair of canaliculus injuries with the little set.

Adult↗
PubMed1976

Rationing out-patients: a defence of the waiting list.

New psychiatric out-patients were offered immediate or delayed appointments (average delay 12 weeks) in random order. The two groups thus formed, comprising 234 patients, were shown to be comparable in some important respects. Immediate appointments were taken up significantly more frequently than delayed appointments, and 12 per cent of immediate and 22 per cent of delayed patients did not receive any psychiatric service. No evidence was found that delay increased other medical services supplied. Non-attenders were presumed to suffer from "neurosis" and "personality problem". Initial attenders used more services than those who failed to keep their first appointment but came later. A waiting list is proposed as a screening device to limit out-patient referrals.

Adolescent↗