Biomedical subjects

F Jacquot

Publications and source records attributed to F Jacquot.

18 recordsLinked to original sources

PubMed2005

[Assessment of a matrix-based quantitative ultrasound imaging device (Beam scanner): reproducibility].

PURPOSE: A new matrix-based quantitative ultrasound (QUS) device was developed for the assessment of two parameters: BUA (Broadband Ultrasound Attenuation) and SOS (Speed Of Sound). This device, called Beam scanner, is a contact imaging device designed to evaluate the calcaneus. The aim of this preliminary study was to evaluate the reproducibility of results in a sample of patient with heterogeneous age distribution. MATERIALS AND METHODS: Seventy-six subjects were included: 18 healthy young males, 18 healthy young women and 40 women aged over 50 years old, including 19 osteoporotic patients according to WHO criteria. Five measurements were made for each patient after foot repositioning. Short-term precision was estimated using the coefficient of variation (CV), standardized CV (SCV) and intra-class correlation coefficient (ICC). RESULTS: SCV varied with the group of subjects between 2.0 and 4.3% for BUA, and between 3.1 and 4.5% for SOS. Mean values of BUA and SOS were statistically lower for osteoporotic women compared with healthy young women or healthy young males (p<0.001). For BUA, only SCV and ICC were better for women aged over 50 years old but without statistical difference. CONCLUSION: This study shows that the heterogeneity of the studied sample population is not a significant factor when assessing precision. This new device has a precision similar to others QUS devices.

Absorptiometry, Photon↗

PubMed2001

Long-term follow-up of functional outcomes and radiographic changes at adjacent levels following lumbar spine fusion for degenerative disc disease.

There are very few studies with more than 20 years' follow-up of lumbar spine fusions for disc degeneration. Currently, there is a lot of interest in the subject of degenerative changes above the level of fusion; this study is concerned with such changes in the very long term (30 years). Twenty-eight patients showing sound fusion on radiographs following posterior midline spinal fusion performed by a single surgeon between 1968 and 1970 were compared with an age- and gender-matched group of 28 patients who had undergone surgery for degenerative disc disease without fusion during the same period, by the same surgeon and using similar criteria for evaluation (Short Form 36 and Oswestry Disability Index; functional testing using self-paced walk and timed up-and-go; flexion and extension lateral radiographs of the lumbar spine). In this study, the incidence of radiographic changes at levels above the level of previous involvement was twice as high in the fusion group as in the non-fusion group. However, there was no statistically significant difference between the two groups in the outcomes measured using validated scales and functional testing. The study emphasises the importance of complete evaluation of these patients using validated outcome measurement instruments against the background of radiographic changes and subjective assessment of back pain. It also shows that radiographic changes do not necessarily mean functional impairment in all patients following lumbar spine fusion for degenerative disc disease.

Case-Control Studies↗

PubMed1993

Anxiogenic-like effects of yohimbine and idazoxan in two behavioral situations in mice.

In a light-dark choice situation, the alpha-2 adrenoceptor antagonist idazoxan shows anxiogenic-like effects, which cannot be blocked by the alpha-2 adrenoceptor agonist clonidine, or by the benzodiazepine receptor antagonist Ro 15-1788. In a conditioned conflict situation, both idazoxan and the alpha-2-adrenoceptor yohimbine show anxiogenic-like effects; the effect of idazoxan could not be blocked by clonidine or Ro 15-1788. These data suggest that systems other than alpha-2 adrenoceptors or benzodiazepine receptors must be found to explain these anxiogenic-like properties.

Adrenergic alpha-Antagonists↗

PubMed1988

[Deflected cephalic presentation. Apropos of 80 cases].

Between 1974 and 1986, we have observed 80 deflected cephalic presentations in the Maternity of Hopital Edouard Herriot in babies weighing more than 2,000 g. They are divided in 34 brow presentations, 27 faces and 14 Bregma. The diagnosis was often made late. Caesarean section is the rule in brow and mento-posterior face presentations. There was no fetal trauma.

Cesarean Section↗

PubMed1983

[The psychology of chronic rheumatism patients based on the Rorschach test].

The objective of this research was to try to see if it was possible to find in a population of chronic rheumatickies (a great majority of P.C.E.) some specific psychologie characteristics or constants among these sicks. So we have used Rorschach test. On the based of 19 persons inspected, we have found 84% who present a pathological inhibition and 68% a pathological anxiety. They are datums more strikingness, but we have found others interesting indications. For example: 47% persons presented symptoms of a affectivity no stabilize egocentric and impulsive and had a perturbed thought by their affectives problems. 21% a deficient valuation of reality. We have terminated trying to discuss two others questions from datums collected.

Adult↗

PubMed1981