Browsing by Subject "SICK BUILDING SYNDROME"

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  • Maragkidou, Androniki; Jaghbeir, Omar; Hämeri, Kaarle; Hussein, Tareq (2018)
    In this study, we measured the concentrations of accumulation and coarse particles inside an educational workshop (March 31–April 6, 2015), calculated particle emission and losses rates, and estimated inhaled deposited dose. We used an Optical Particle Sizer (TSI OPS 3330) that measures the particle number size distribution (diameter 0.3–10 μm) and we converted that into particle mass size distribution (assuming spherical particles and unit density). We focused on two particle size fractions: 0.3–1 μm (referred as PN0.3−1 and PM0.3−1) and 1–10 μm (referred as PN1−10 and PM1−10). The occupants' activities included coffee brewing, lecturing, tobacco smoking, welding, scrubbing, and sorting/drilling iron. The highest concentrations were observed during welding with PN0.3−1 (PM0.3−1) was ∼1866 cm−3 (55 μg/m3) and PN1−10 (PM1−10) was ∼7 cm−3 (103 μg/m3). The lowest concentrations were observed during coffee brewing and metal turning with PN0.3−1 (PM0.3−1) was ∼22 cm−3 (0.7 μg/m3) and PN1−10 (PM1−10) was ∼0.5 cm−3 (4 μg/m3). The emissions rate of coarse particles was 85–1010 particles/hour × cm3 whereas that for submicron particle in the diameter range 0.3–1 μm was 5.7 × 104–9.3 × 104 particles/hour × cm3 depending on the activity and the ventilation rate. The coarse particles losses rate was 0.35–2.1 h−1 and the ventilation rate was 0.24–2.1 h−1. The alveolar received the majority and particles below 1 μm with a fraction of about 53% of the total inhaled deposited dose whereas the head/throat region received about 18%. This study is important for better understanding the health effects at educational workshops.
  • Selinheimo, Sanna; Vuokko, Aki; Sainio, Markku; Karvala, Kirsi; Suojalehto, Hille; Jarnefelt, Heli; Paunio, Tiina (2016)
    Introduction Indoor air-related conditions share similarities with other conditions that are characterised by medically unexplained symptoms (MUS)-a combination of non-specific symptoms that cannot be fully explained by structural bodily pathology. In cases of indoor air-related conditions, these symptoms are not fully explained by either medical conditions or the immunological-toxicological effects of environmental factors. The condition may be disabling, including a non-adaptive health behaviour. In this multifaceted phenomenon, psychosocial factors influence the experienced symptoms. Currently, there is no evidence of clinical management of symptoms, which are associated with the indoor environment and cannot be resolved by removing the triggering environmental factors. The aim of this study is to compare the effect of treatment-as-usual (TAU) and two psychosocial interventions on the quality of life, and the work ability of employees with non-specific indoor air-related symptomatology. Methods and analyses The aim of this ongoing randomised controlled trial is to recruit 60 participants, in collaboration with 5 occupational health service units. The main inclusion criterion is the presence of indoor air-related recurrent symptoms in 2 organ systems, which have no pathophysiological explanation. After baseline clinical investigations, participants are randomised into interventions, which all include TAU: cognitive-behavioural psychotherapy, psychoeducation and TAU (control condition). Health-related quality of life, measured using the 15D-scale, is the primary outcome. Secondary outcomes include somatic and psychiatric symptoms, occupational factors, and related underlying mechanisms (ie, cognitive functioning). Questionnaires are completed at baseline, at 3, 6 and 12-month follow-ups. Data collection will continue until 2017. The study will provide new information on the individual factors related to indoor air-associated symptoms, and on ways in which to support work ability. Ethics and dissemination The Coordinating Ethics Committee of the Hospital District of Helsinki and Uusimaa, Finland, has granted approval for the study. The results will be published in peer-reviewed journals.
  • Selinheimo, Sanna; Vuokko, Aki; Hublin, Christer; Järnefelt, Heli; Karvala, Kirsi; Sainio, Markku; Suojalehto, Hille; Suvisaari, Jaana; Paunio, Tlina (2019)
    Objective: Nonspecific health complaints associated with indoor air are common in work environments. In some individuals, symptoms become persistent without an adequate explanation. The aim was to study factors that associate with the health-related quality of life (HRQoL) of employees with persistent, nonspecific indoor-air-related symptomatology. Methods: We present baseline results of a randomized controlled trial of interventions targeted on the HRQoL of the employees with indoor-air-associated nonspecific symptoms. The main participant-inclusion criterion was the presence of persistent indoor-air-related multiorgan symptoms with no known pathophysiological or environment-related explanation. As a comparison for participants' HRQoL (n = 52) we used data from the general-population Health 2011 study (BRIF8901) including information on subjects matched to the participants' working status and age and subjects with asthma, anxiety or depressive disorder, or other chronic conditions with work disability. Results: The participants showed greater and a clinically significant impairment of HRQoL [M = 0.83, SE = 0.013] than individuals from the general population [M = 0.95, SE = 0.001, p <.001, Hedges' g = 2.33] and those with asthma [M = 0.93, SE = 0.005, p <.001, Hedges' g = 1.46], anxiety and depressive disorder [M = 0.89, SE = 0.006, p <.001, Hedges' g = 0.73], or a chronic condition with work disability [M = 0.91, SE = 0.003, p <.001, Hedges' g = 1.11]. Prevalent symptoms of depression, anxiety, and insomnia and poor recovery from work were associated with a poor HRQoL. Conclusions: Individuals with nonspecific indoor-air-associated symptoms have a poorer HRQoL than individuals in the general population with a globally burdensome disease. Psychological distress associated with a poor HRQoL should be considered in the making of decisions about the treatment of these patients.
  • Harmo, Panu; Puusa, Janne; Lehtinen, Simo; Selkäinaho, Jorma; Aattela, Elisa; Visala, Arto; Salkinoja-Salonen, Mirja Sinikka; Työryhmä: Sisäilmapoliisi (Siy sisäilmatieto oy, 2017)
    SIY Raportti
    Rikkivety tiedetään terveydelle haitalliseksi kroonisessa tai usein toistuvassa altistuksessa jo alle 0,01 mg/m3 pitoisuuksissa, mutta sen monitorointiin markkinoiden kenttäkelpoisten mittarien herkkyys (≥0,05 mg/m3) ei riitä. Kehitimme online-luettavan hopeaanturin sulfidikaasujen havainnointiin sisätiloissa, joissa on tarvetta matalien pitoisuuksien pitkäaikaisseurantaan. Mittausanturi on pienikokoinen, äänetön, kustannustehokas eikä häiritse tilojen muuta toimintaa. Useita antureita samanaikaisesti 24/7 käyttäen on mahdollista jäljittää sulfidikaasujen päästölähteet ja purkautumisajankohdat koko kiinteistössä. Anturin herkkyydeksi osoittautui 0,002 mg kertapurkaus sulfidirikkiä, mutta pienemmätkin yksittäispäästöt tulivat näkyviin, jos purkauksia oli useita. Antureiden sijoittamista vaihtelemalla on mahdollista paikantaa sulfidikaasujen päästölähteet.