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Y Ollivier

Publications and source records attributed to Y Ollivier.

11 recordsLinked to original sources
PubMed2005

[Cardiac surgery without transfusion in 2005].

PURPOSE: Between January 1991 and October 2003, 200 Jehovah Witnesses adult patients underwent elective cardiac surgery. To asses the impact on continuing progress of blood saving protocols and the increasing operative risk of patients proposed to surgery, we have re-assessed our results in this specific population. METHODOLOGY: Files of the first 100 patients operated upon between 1991 and 1998 were reviewed, and compared to the following 100 ones treated between 1998 to today. All patients were scored using the Euroscore model. RESULTS: In the latest series, patients are older (68 vs 51) and 13% underwent an iterative procedure, although there was none in the first series. Three deaths occurred after one month at the beginning of our experience, only one in the latest series. Operative risk factors had distinctly deteriorated, with more redux, and ejection fraction lower than 35%. Major progress to maintain morbi-mortality stability were multifactorial: preoperative erythropoietin in order to reach an haemoglobin minimal value of 14 g/dL, Cornell University protocol, mini-ECC, warm blood cardioplegia, ultra-early extubation. CONCLUSION: Cardiac surgery without transfusion can be realised with an equivalent risk to that of classical surgery, despite an operative risk aggravation, due to the association of recent conservative techniques.

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PubMed2004

[Fiat lux!].

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Adult↗
PubMed1991

The European space suit, a design for productivity and crew safety.

In order to fulfill the two major mission objectives, i.e. support planned and unplanned external servicing of the COLUMBUS FFL and support the HERMES vehicle for safety critical operations and emergencies, the European Space Suit System baseline configuration incorporates a number of design features, which shall enhance the productivity and the crew safety of EVA astronauts. The work in EVA is today--and will be for several years--a manual work. Consequently, to improve productivity, the first challenge is to design a suit enclosure which minimizes movement restrictions and crew fatigue. It is covered by the "ergonomic" aspect of the suit design. Furthermore, it is also necessary to help the EVA crewmember in his work, by giving him the right information at the right time. Many solutions exist in this field of Man-Machine Interface, from a very simple system, based on cuff check lists, up to advanced systems, including Head-Up Displays. The design concept for improved productivity encompasses following features: easy donning/doffing thru rear entry, suit ergonomy optimisation, display of operational information in alpha-numerical and graphical form, and voice processing for operations and safety critical information. Concerning crew safety the major design features are: a lower R-factor for emergency EVA operations thru increased suit pressure, zero prebreath conditions for normal operations, visual and voice processing of all safety critical functions, and an autonomous life support system to permit unrestricted operations around HERMES and the CFFL. The paper analyses crew safety and productivity criteria and describes how these features are being built into the design of the European Space Suit System.

Communication↗
PubMed1975

[Plasma transport of 5-hydroxytryptamine-3H. I. Nature and classification of indole derivatives after injection of 5-hydroxytryptamine-3H].

After a single i.p. injection of tritiated-5-hydroxytryptamine to young, old or stressed rats, the blood plasma was filtered through Sephadex-G 25 column. Two peaks of radioactivity were obtained. One was excluded from the column and eluted together with plasma proteins, the other was retained on the column and eluted as free indoles. The radioactivity bound to plasma proteins was identified as 5-hydroxyindole acetic acid. The free radioactivity was identified as 5-hydroxytryptamine.

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PubMedDate not supplied

Prevalences of rheumatoid arthritis in Roman Catholic nuns and the general female population in Brittany, France: a pilot study.

OBJECTIVE: To evaluate the influence of lifestyle factors on the prevalence of rheumatoid arthritis (RA) by comparing Roman Catholic nuns and the general female population. METHOD: RA prevalence in the general population was evaluated using a standardized telephone survey in 1857 homes taken at random. Individuals who reported an inflammatory joint disease were contacted by a rheumatologist of our unit, missing data were collected from the general practitioner or rheumatologist with the patient's permission, and if necessary a physical examination was done by a rheumatologist. The 9 largest Roman Catholic nun communities in Brittany were screened using the same standardized questionnaire administered face-to-face; nuns who reported an inflammatory joint disease were interviewed and examined by rheumatologists. In both populations, RA was diagnosed when (1) the rheumatologist of our unit who interviewed the patient considered the RA classification criteria positive and (2) the rheumatologist who examined the patient gave a diagnosis of RA independently from RA classification criteria. RESULTS: Data were available for 1706 adult females in the general population and 721 nuns. Of the 20 nuns who reported RA or polyarthritis, 11 received a diagnosis of RA (prevalence 1.52%). The prevalences adjustedfor the French population after 40 years were 1.66% (95% confidence interval, 0.84-2.44) and 1.33 (0.27-2.40) among the nuns and the general female population, respectively. CONCLUSION: Although our nun population was too small for definite conclusions, we found no evidence of a difference in RA prevalence among nuns and the general female population in Brittany.

Adult↗