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Autonomic neuropathy increases the risk of obstructive sleep apnea in obese diabetics
No full textFluid shift from the legs to the neck induced by LBPP (lower-body positive pressure) increases UA
(upper airway) collapsibility in healthy men. Rostral fluid displacement during recumbency may
therefore contribute to the pathogenesis of OSA (obstructive sleep apnoea). There is a higher
prevalence of OSA in men than in women. We therefore hypothesized that UA collapsibility in-
creases more in men in response to rostral fluid displacement than in women. UA collapsibility
was assessed in healthy, non-obese men and women while awake by determining UA Pcrit (critical
closing pressure) during application of different suction pressures to the UA. Subjects were
randomized to 5 min control or LBPP arms after which they crossed-over into the other arm
following a 30 min washout. LBPP was applied by inflating anti-shock trousers wrapped around
both legs to 40 mmHg. Pcrit, leg fluid volume and neck circumference were measured at baseline
and after 5 min of both control and LBPP periods. LBPP caused a decrease in leg fluid vol-
ume and an increase in neck circumference that did not differ between men and women. However,
compared with the control period, LBPP induced a much greater increase in Pcrit in men than in
women (7.2 +
−1.8 compared with 2.0 +
−
1.5 cmH2O, P=0.035). We conclude that rostral fluid
displacement by LBPP increases UA collapsibility more in healthy, non-obese men than in women.
This may be one mechanism contributing to the higher prevalence of OSA in men than in
women
DECREASED PERIPHERAL CHEMOSENSITIVITY TO CO2 PREVENTS CENTRAL SLEEP APNEA IN SEVERE DIABETIC AUTONOMIC NEUROPATHY
No full textSkin prick-test reactivity to aeroallergens and allergic symptoms in an urban population of central Italy: a longitudinal study.
No full textACUTE VENTILATORY AND GAS-EXCHANGE EFFECTS OF A NEW BETA-2 AGONIST, BROXATEROL, IN ASTHMATICS
No full textCEREBROVASCULAR REACTIVITY AND HYPERCAPNIC RESPIRATORY DRIVE IN DIABETIC AUTONOMIC NEUROPATHY
No full textOBSTRUCTIVE INSTEAD OF EXPECTED CENTRAL SLEEP APNEAS OCCUR IN SEVERE DIABETIC AUTONOMIC NEUROPATHY
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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