Asthme et facteurs météorologiques

Peyre, M.; Cheminat, J.C.; Molina, C

doi:10.1016/s0335-7457(79)80043-x

Cited by 2 publications

(2 citation statements)

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“…If this weather type is not very compatible with a good dispersal of pollen, it can single-handedly lead to an increase in bronchial hyper-reactivity and so to the appearance or to a worsening of asthma symptoms during a period when the allergic person is already under the influence of the pollen or of its allergens. It is important to notice that fog alone is usually not a trigger for asthma; the best proof of this is that the Mont-Dore (France), where fog is very frequent, every year receives 16,000 patients for a thermal or climatic course of treatment, most of them having a respiratory illness (Peyre et al 1979). However the patients are submitted to a special environment bringing together medium altitude, the absence of pollution, the modification of their usual allergens, a certain level of relaxation and rest and the pharmacological aspects of the cure.…”

Section: Mca On Pollen Concentrationsmentioning

confidence: 99%

“…Thus some authors (Peyre et al 1979) have shown that it is difficult to identify correlations between asthma crisis and an isolated meteorological factor, but that the path of fronts is much more conclusive, suggesting that the study of asthma morbidity should be made with reference to the larger meteorological scale and by integrating diverse parameters.…”

Section: Introductionmentioning

confidence: 99%

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Predicting days of high allergenic risk during Betula pollination using weather types

Laaidi¹

2001

International Journal of Biometeorology

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The aim of this study was to build up a picture of the influence of meteorological conditions on pollen and pollinosis, taking account of weather types, pollen concentrations in the air and pollinosis symptoms, with the aim of preventing allergic responses. The study took place in Burgundy from 1996 to 1998, during the pollination of the birch (Betula), which is the most important arborean allergen in this region. We used daily pollen data from four Hirst volumetric traps, identified weather types by Bénichou's classification, and obtained data on the occurrence of rhinitis, conjunctivitis, asthma and coughing from a sample of 100 patients. These data were analysed by multiple-component analysis. The results show that pollen dispersal is favoured by windy conditions, low relative humidity, precipitation below 2 mm and temperatures above 6 degrees C. Such weather also favours pollinosis, but other particular meteorological situations, even if they do not assist pollen dispersal, can act directly on the development of symptoms: a decrease of temperature (3 degrees C) led to the development of rhinitis and conjunctivitis, while strong winds were associated with many cases of conjunctivitis and asthma, owing to the irritant effect of cold or wind; asthma was favoured by temperature inversions with fog, probably because such weather corresponds to high levels of pollution, which act on bronchial hyperreactivity. Because the weather types favouring pollination and pollinosis are predicted by the meteorological office, this can constitute a tool for reducing the effect of high-risk allergenic days.

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Section: Mca On Pollen Concentrationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%