Astma Volwassenen Wetenschap

Reference Equations for the ADL-Glittre Test in Pediatric Subjects.
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Reference Equations for the ADL-Glittre Test in Pediatric Subjects.

Respir Care. 2019 Apr 16;:

Authors: Martins R, Bobbio TG, Mayer AF, Schivinski CI

Abstract
BACKGROUND: The ADL-Glittre test (TGlittre) was initially proposed to evaluate the activities of daily life (ADL) of adults with COPD that involve activities with the upper limbs in addition to walking. Recently, the test has been adapted for children (TGlittre-P), but no reference values have been proposed for its use in this population. The main objective of this study was to develop reference equations for the pediatric adaptation of the TGlittre.
METHODS: A cross-sectional study carried out over a period of 19 months. Children 6 -14 y old participated in the study. The study was rigorously controlled based on the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire and on normal spirometry. Study subjects were evaluated for their biometric data (ie, weight, height, body mass index, body surface area, and length of the lower limbs) and spirometric data. Subjects then performed 2 TGlittre-P tests with an interval of 30 min between them. Statistical analysis included a Pearson correlation test to verify a correlation between time spent on the TGlittre-P and biometric variables such as gender and age. Subsequently, a multiple regression analysis was conducted for those variables. The level of signficance was set at a P of 0.05.
RESULTS: Eighty-seven children (44 girls) participated in the study. Age was the predictive variable with the greatest influence on the time spent on the TGlittre-P (male: adjusted R2 = 39.6%; female: adjusted R2 = 25.2%). The following equations were established: time spent on the TGlittre-P = 3.781 - 0.083 × age (female), and time spent on the TGlittre-P = 4.025 - 0.123 × age (male).
CONCLUSIONS: TGlittre-P reference equations were developed for females and males, with age being the most influential predictive variable in the test performed by children.

PMID: 30992402 [PubMed - as supplied by publisher]



The Melbourne epidemic thunderstorm asthma event 2016: an investigation of environmental triggers, effect on health services, and patient risk factors.
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The Melbourne epidemic thunderstorm asthma event 2016: an investigation of environmental triggers, effect on health services, and patient risk factors.

Lancet Planet Health. 2018 06;2(6):e255-e263

Authors: Thien F, Beggs PJ, Csutoros D, Darvall J, Hew M, Davies JM, Bardin PG, Bannister T, Barnes S, Bellomo R, Byrne T, Casamento A, Conron M, Cross A, Crosswell A, Douglass JA, Durie M, Dyett J, Ebert E, Erbas B, French C, Gelbart B, Gillman A, Harun NS, Huete A, Irving L, Karalapillai D, Ku D, Lachapelle P, Langton D, Lee J, Looker C, MacIsaac C, McCaffrey J, McDonald CF, McGain F, Newbigin E, O'Hehir R, Pilcher D, Prasad S, Rangamuwa K, Ruane L, Sarode V, Silver JD, Southcott AM, Subramaniam A, Suphioglu C, Susanto NH, Sutherland MF, Taori G, Taylor P, Torre P, Vetro J, Wigmore G, Young AC, Guest C

Abstract
BACKGROUND: A multidisciplinary collaboration investigated the world's largest, most catastrophic epidemic thunderstorm asthma event that took place in Melbourne, Australia, on Nov 21, 2016, to inform mechanisms and preventive strategies.
METHODS: Meteorological and airborne pollen data, satellite-derived vegetation index, ambulance callouts, emergency department presentations, and data on hospital admissions for Nov 21, 2016, as well as leading up to and following the event were collected between Nov 21, 2016, and March 31, 2017, and analysed. We contacted patients who presented during the epidemic thunderstorm asthma event at eight metropolitan health services (each including up to three hospitals) via telephone questionnaire to determine patient characteristics, and investigated outcomes of intensive care unit (ICU) admissions.
FINDINGS: Grass pollen concentrations on Nov 21, 2016, were extremely high (>100 grains/m3). At 1800 AEDT, a gust front crossed Melbourne, plunging temperatures 10°C, raising humidity above 70%, and concentrating particulate matter. Within 30 h, there were 3365 (672%) excess respiratory-related presentations to emergency departments, and 476 (992%) excess asthma-related admissions to hospital, especially individuals of Indian or Sri Lankan birth (10% vs 1%, p<0·0001) and south-east Asian birth (8% vs 1%, p<0·0001) compared with previous 3 years. Questionnaire data from 1435 (64%) of 2248 emergency department presentations showed a mean age of 32·0 years (SD 18·6), 56% of whom were male. Only 28% had current doctor-diagnosed asthma. 39% of the presentations were of Asian or Indian ethnicity (25% of the Melbourne population were of this ethnicity according to the 2016 census, relative risk [RR] 1·93, 95% CI 1·74-2·15, p <0·0001). Of ten individuals who died, six were Asian or Indian (RR 4·54, 95% CI 1·28-16·09; p=0·01). 35 individuals were admitted to an intensive care unit, all had asthma, 12 took inhaled preventers, and five died.
INTERPRETATION: Convergent environmental factors triggered a thunderstorm asthma epidemic of unprecedented magnitude, tempo, and geographical range and severity on Nov 21, 2016, creating a new benchmark for emergency and health service escalation. Asian or Indian ethnicity and current doctor-diagnosed asthma portended life-threatening exacerbations such as those requiring admission to an ICU. Overall, the findings provide important public health lessons applicable to future event forecasting, health care response coordination, protection of at-risk populations, and medical management of epidemic thunderstorm asthma.
FUNDING: None.

PMID: 29880157 [PubMed - indexed for MEDLINE]



Asthma and atopic dermatitis after early-, late-, and post-term birth.
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Asthma and atopic dermatitis after early-, late-, and post-term birth.

Pediatr Pulmonol. 2018 03;53(3):269-277

Authors: Korhonen P, Haataja P, Ojala R, Hirvonen M, Korppi M, Paassilta M, Uotila J, Gissler M, Luukkaala T, Tammela O

Abstract
OBJECTIVE: To assess the incidence and risk factors of asthma and atopic dermatitis by seven years of age after early-term (ET) (37+0 -38+6 weeks), full-term (FT) (39+0 -40+6 weeks), late-term (LT) (41+0 -41+6 weeks), and especially post-term (PT) (≥42 weeks) birth.
METHODS: Altogether, 965 203 infants born between 1991 and 2008 in Finland were investigated in ET, FT, LT, and PT groups. Data on asthma medication reimbursement and hospital visits for atopic dermatitis were retrieved from national health databases.
RESULTS: The frequencies of asthma medication reimbursement in the ET, FT, LT, and PT groups were 4.5%, 3.7%, 3.3%, and 3.2%, respectively. Hospital visits due to atopic dermatitis were most common after PT birth. Compared with FT births, ET births were associated with an increased risk of asthma (adjusted odds ratio (aOR), 95% confidence interval (CI) 1.20, 1.17-1.23), while LT (aOR, 95%CI 0.91, 0.89-0.93) births and PT (aOR, 95%CI 0.87, 0.83-0.92) births decreased this risk. PT birth (aOR, 95%CI 1.06, 1.01-1.10) predicted atopic dermatitis. From a population point of view, the most relevant risk factors for asthma were male sex, ET birth, smoking during pregnancy and birth by elective cesarean section, and for atopic dermatitis male sex, first delivery, birth in a level II hospital and birth by cesarean section.
CONCLUSIONS: Early-term birth was a predictor of asthma, and PT birth was associated with atopic dermatitis. Counseling against smoking and following strict indications for planned ET deliveries and cesarean sections may be means to reduce the risk of later asthma.

PMID: 29316371 [PubMed - indexed for MEDLINE]



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