Aerul conditionat a devenit o obisnuinta si pentru multi romani, desi uneori problemele pe care le cauzeaza sanatatii contrabalanseaza beneficiile. Pentru cardiaci avem fara indoiala beneficii: prezenta unei temperaturi de 20 de grade la birou si acasa asigura un flux sanguin constant, cu conditia, bineinteles, ca persoana respectiva sa nu-si supuna organismul unei treceri bruste la caldura torida de afara.
Insa pentru reumatici ori pentru persoane cu migrene sau diverse afectiuni din sfera O.R.L. – sinuzite, amigdalite – prezenta aerului conditionat puternic, a temperaturilor scazute si a lipsei de umiditate pot fi factori nocivi persistenti si agresivi, care intretin aceste infectii si cronicizeaza boala, ducand chiar la pusee acute.
Pentru alergici sau purtatorii de lentile de contact, medicii oftalmologi recomanda in scop profilactic folosirea lacrimilor artificiale, mai ales celor care beneficiaza de aer conditionat in masina si acasa sau lucreaza in birouri cu aer conditionat de tip industrial, care pot “usca” rapid cornea.
Un alt pericol poate fi contaminarea sistemului de conducere a aerului, umidificatoarelor si bazinelor acestora cu microrganisme (cel mai des actinomycetele termofile). Acestea contamineaza prin spori toata cladirea, imprastiindu-se o data cu aerul rece. Rezultatul poate fi instalarea unei pneumonii la un anumit procent de persoane, care sunt sensibilizate prin expunere repetata, timp de saptamani sau luni. Cei mai vulnerabili sunt fumatorii, cei care sufera de boli pulmonare, diverse afectiuni cronice sau convalescentii. Forma acuta necesita spitalizare; cea subacuta se poate dezvolta insidios, cu tuse si respiratie dificila, astenie, oboseala continua si scaderea imunitatii, pierdere in greutate. Boala se poate complica, ducand la bronsiolita la unii pacienti, alteori mergand pana la insuficienta respiratorie.
Atunci cand in bazinele de apa ale sistemelor mari de umidificare se dezvolta o serie de amoebe, endotoxine, bacterii si fungi, la unele persoane expuse se instaleaza o stare febrila acuta, cu dureri musculare si dispnee. Afectiunea apare mai ales in ziua de luni, sau dupa zilele de sarbatoare, cand instalatia nu a functionat si microorganismele sau toxinele lor s-au inmultit.
In cazurile fara complicatii, simptomele pot disparea o data cu incetarea expunerii, dar implica atentionarea personalului administrativ pentru controlarea permanenta a calitatii apei din bazin si a vaporilor imprastiati in cladire. Mai grave sunt situatiile in care sunt implicate microorganisme mai virulente, precum bacteria Legionella pneumophilla, ce determina asa-zisa “boala a legionarilor”, o boala insa mai rar intalnita.
Multe persoane folosesc si in propriile locuinte umidificatoare, mai ales in camera copiilor. Bazinele acestora trebuie clatite, spalate des si resturile de apa aruncate. Exista pe piata substante speciale, care se adauga in aceasta apa pentru reglarea ph-ului si care impiedica dezvoltarea microorganismelor.
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