{"id":3619,"date":"2021-01-20T10:16:56","date_gmt":"2021-01-20T10:16:56","guid":{"rendered":"\/?p=3619"},"modified":"2021-01-20T10:16:56","modified_gmt":"2021-01-20T10:16:56","slug":"the-importance-of-air-changes","status":"publish","type":"post","link":"https:\/\/www.vanguardhealthcare.co.uk\/bs_ba\/the-importance-of-air-changes\/","title":{"rendered":"Va\u017enost izmjena zraka"},"content":{"rendered":"<p>Kako se planirana operacija nastavlja u bolnicama, uz brigu o pacijentima Covid-19, mjere opreza zasnovane na prijenosu ostaju klju\u010dne za minimiziranje rizika i osiguravanje da se procedure odvijaju. Ali brzina mogu\u0107ih izmjena zraka u operacionim salama tako\u0111er je klju\u010dni faktor.<\/p>\n<p>Osim smanjenja rizika od infekcije, vrijeme koje je potrebno da se aerosoli uklone iz klini\u010dkih podru\u010dja pomo\u0107u ventilacijskih sistema mo\u017ee imati zna\u010dajan utjecaj na vrijeme potrebno izme\u0111u hirur\u0161kih i dijagnosti\u010dkih procedura, a samim tim i na nivoe efikasnosti u operacionim salama i salama za procedure.<\/p>\n<p><strong>Minimiziranje rizika<\/strong><\/p>\n<p>Faktori rizika sa potencijalom da uti\u010du na preno\u0161enje infekcije u salama uklju\u010duju verovatno\u0107u da pacijenti imaju Covid-19 na prvom mestu, \u0161to opet zavisi od adekvatnosti i efikasnosti izolacije i prethodnog skrininga pacijenata, kao i od op\u0161te prevalencije stope prijenosa virusa i zajednice.<\/p>\n<p>Nivo rizika pri poduzimanju elektivne operacije i dijagnosti\u010dkih procedura tako\u0111er zavisi od lokalnog pridr\u017eavanja relevantnih mjera opreza za kontrolu infekcije, kao \u0161to su priprema pacijenta, pranje ruku i upotreba odgovaraju\u0107e OZO.<\/p>\n<p>Ali \u010dak i kada se poduzmu niz mjera za siguran ulazak u ne-Covid put, kao \u0161to su samoizolacija, skrining za odsustvo simptoma, povi\u0161ena tjelesna temperatura i negativni testovi na antigen prije prijema, odre\u0111eni nivo rizika i dalje ostaje. Da bi se ovaj rizik dodatno smanjio, potrebne su dodatne mjere opreza kako bi se osiguralo da se infekcija ne prenosi zrakom.<\/p>\n<p>Sistemi za filtriranje zraka u operacijskim salama smanjuju rizik od infekcije \u010desticama u zraku. HEPA filter osigurava da je zrak koji se dovodi u pozori\u0161te \u010dist, izmjene zraka osiguravaju da je svje\u017ei zrak u koli\u010dini dovoljnoj da razrijedi \u010destice u prostoriji do odgovaraju\u0107eg nivoa, dok pozitivni tlak osigurava da zrak koji ulazi u pozori\u0161te to \u010dini u kontrolisan na\u010din.<\/p>\n<h4><strong>Postupci stvaranja aerosola (AGP)<\/strong><\/h4>\n<p>Potrebne su poja\u010dane mjere opreza u zraku kada se postupak stvaranja aerosola (AGP) izvodi na pacijentu za kojeg se zna da je zara\u017een Covid-19 ili za koga nije poznat status Covid-19, ili se postupak poduzima na lokaciji &#039;hotspot&#039;, kako je definisano od strane <a href=\"https:\/\/www.gov.uk\/government\/publications\/wuhan-novel-coronavirus-infection-prevention-and-control\/covid-19-personal-protective-equipment-ppe#ppe-guidance-by-healthcare-context\">Smjernice za javno zdravstvo Engleske (PHE).<\/a>.<\/p>\n<p>PHE trenutno defini\u0161u svaku operacijsku salu u kojoj se redovno provode procedure stvaranja aerosola kao &#039;hotspot&#039; lokaciju ili <a href=\"https:\/\/www.gov.uk\/government\/publications\/wuhan-novel-coronavirus-infection-prevention-and-control\/covid-19-personal-protective-equipment-ppe#ppe-guidance-by-healthcare-context\">akutnog podru\u010dja ve\u0107eg rizika<\/a>. Kao minimum, osobna za\u0161titna oprema za osoblje u bioskopima u kojima se poduzimaju procedure koje stvaraju aerosol treba uklju\u010diti hirur\u0161ku masku otpornu na teku\u0107inu kako bi se smanjio rizik od raspr\u0161ivanja kapljica.<\/p>\n<p><a href=\"https:\/\/www.gov.uk\/government\/publications\/wuhan-novel-coronavirus-infection-prevention-and-control\/covid-19-infection-prevention-and-control-guidance-aerosol-generating-procedures\">Postupci stvaranja aerosola<\/a> mogu se podijeliti na respiratorne i hirur\u0161ke AGP-ove, pri \u010demu je op\u0107enito vjerovatno da \u0107e hirur\u0161ki AGP-ovi biti manjeg intrinzi\u010dnog rizika, iako mogu stvarati aerosole tokom du\u017eeg perioda. Primjeri uobi\u010dajenih AGP-a su intubacija, ekstubacija, procedure vezane za traheostomiju, neinvazivna ventilacija, bronhoskopija, endoskopija gornjeg dijela gastrointestinalnog trakta i odre\u0111ene stomatolo\u0161ke procedure.<\/p>\n<p>Koliko je izmjena zraka potrebno za operacijsku salu ovisi o vrsti operacije koja se u njoj poduzima i smjernicama koje se moraju pridr\u017eavati.<\/p>\n<h4><strong>Vrijeme \u010di\u0161\u0107enja aerosola (ACT)<\/strong><\/h4>\n<p>Dok standardna operaciona sala treba da ima 20 izmena vazduha na sat, ova stopa se redovno prekora\u010duje, a bioskopi sa laminarnim protokom obi\u010dno imaju mnogo ve\u0107u stopu od toga. Sistemi laminarnog protoka omogu\u0107avaju \u010dvr\u0161\u0107u kontrolu protoka vazduha u radnom podru\u010dju.<\/p>\n<p>\u0160iroko prihva\u0107eno <a href=\"https:\/\/www.cdc.gov\/infectioncontrol\/guidelines\/environmental\/appendix\/air.html#tableb1\">me\u0111unarodne smjernice<\/a> odnose se na podatke koji pokazuju da svaka izmjena zraka uklanja pribli\u017eno 63% zaga\u0111iva\u010da u zraku, pri \u010demu se &gt;99% uklanja nakon pet izmjena zraka. Na osnovu ove pretpostavke, samo 0,004% cirkuliraju\u0107ih aerosola ostaje nakon 10 izmjena. Iako postoje ograni\u010deni dokazi koji podr\u017eavaju ovu metodu izra\u010dunavanja, ona se \u0161iroko koristi i smjernice za PHE se odnose na nju.<\/p>\n<p>Koliko vremena je potrebno da se izvr\u0161i odre\u0111eni broj izmjena zraka ovisi o ventilacijskom sistemu u pozori\u0161tu, prostoriji ili zgradi koja se koristi. <a href=\"https:\/\/associationofanaesthetists-publications.onlinelibrary.wiley.com\/doi\/full\/10.1111\/anae.15146#anae15146-bib-0001\">Ra\u010dunica<\/a> za &#039;vrijeme \u010di\u0161\u0107enja aerosola&#039; (ACT) - vrijeme potrebno u minutama za razmjenu zraka u prostoriji - je 60 podijeljeno s brojem izmjena zraka po satu izmjerenim ili procijenjenim za tu prostoriju. Rezultiraju\u0107e vrijeme u minutama se zatim mno\u017ei sa brojem potrebnih izmjena zraka.<\/p>\n<p>Me\u0111utim, generi\u010dke smjernice i preporuke treba koristiti s oprezom. U stvarnosti, vremena \u010di\u0161\u0107enja aerosola zavise od karakteristika prostorije i specifi\u010dna su za lokaciju. Da bi se odredilo vrijeme \u010di\u0161\u0107enja aerosola za pojedina\u010dnu prostoriju ili pozori\u0161te, zdravstvena slu\u017eba mora znati stope izmjene zraka za svaku lokaciju pozori\u0161ta. Dok ve\u0107ina operacionih sala ima visoku stopu ventilacije, uglavnom pri 20 ili vi\u0161e izmjena zraka na sat, to mo\u017ee varirati i postoji <a href=\"https:\/\/assets.publishing.service.gov.uk\/government\/uploads\/system\/uploads\/attachment_data\/file\/144029\/HTM_03-01_Part_A.pdf\">zakonski zahtev<\/a> za mjerenje stope ventilacije svakih 14 mjeseci.<strong>&#160;<\/strong><\/p>\n<h4><strong>Razmak izme\u0111u procedura<\/strong><\/h4>\n<p>A <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1111\/anae.15146\">pismo koje je objavilo Udru\u017eenje anesteziologa<\/a> u junu je predlo\u017eio da se izme\u0111u procedura ostavi vrijeme \u010di\u0161\u0107enja aerosola (ACT) koje je jednako vremenu potrebnom za pet izmjena zraka - kako je izmjereno za odre\u0111eni bioskop - kako bi se omogu\u0107ilo dovoljno \u010di\u0161\u0107enje aerosola. Ova preporuka se obi\u010dno pominje, me\u0111utim, procjene iz drugih izvora kre\u0107u se od dva ACT-a do 10-15 ACT-a.<\/p>\n<p>Na osnovu pretpostavke da je potrebno pet izmjena zraka izme\u0111u procedura, standardnoj operacionoj sali sa 20 izmjena zraka na sat potrebno je 15-minutno vrijeme za \u010di\u0161\u0107enje. Ventilacijski sistemi teatra sa laminarnim protokom mogu imati mnogo ve\u0107i broj izmjena zraka po satu, \u0161to zna\u010di da je potrebno kra\u0107e vrijeme izme\u0111u procedura.<\/p>\n<p>Na svakom zdravstvenom radniku je da odlu\u010di o svojoj vlastitoj politici u pogledu toga koja je u\u010destalost izmjene zraka prihvatljiva za sigurno uklanjanje aerosola, na osnovu njihovih poznatih brzina izmjene zraka u klini\u010dkim podru\u010djima. Dok su tipi\u010dni rasponi za razli\u010dite tipove objekata dostupni, kori\u0161tenje procjena umjesto \u010dvrstih podataka mo\u017ee biti povezano s rizikom.<\/p>\n<p>Osim toga, za Covid pozitivne pacijente ili pacijente \u010diji je Covid status nepoznat, mo\u017ee biti potreban negativan pritisak kako bi se smanjio rizik od infekcije izvan okru\u017eenja pozori\u0161ta.<\/p>\n<p><strong>Pobolj\u0161anje vremena obrade pozori\u0161ta<\/strong><\/p>\n<p>Bez obzira na broj izmjena zraka koje bolnica ima izme\u0111u procedura, nema sumnje da politika za koju se svaka bolnica odlu\u010di mo\u017ee imati zna\u010dajne implikacije na nivo produktivnosti u pozori\u0161tu. Smanjenje vremena potrebnog za svaku izmjenu zraka, a time i vremena \u010dekanja u pozori\u0161tu, mo\u017ee dovesti do pove\u0107anja efikasnosti i direktno utjecati na to koliko pacijenata mo\u017ee biti lije\u010deno u jednom danu.<\/p>\n<p>\u0160to su ve\u0107i protok zraka i broj izmjena zraka na sat koji su mogu\u0107i u prostoriji ili pozori\u0161tu, to je br\u017ee <a href=\"https:\/\/bjanaesthesia.org\/article\/S0007-0912(20)30853-9\/fulltext\">aerosoli se mogu o\u010distiti<\/a>, i \u0161to br\u017ee vrijeme obrade pacijenta mo\u017ee biti. Iako se razlika i u\u0161te\u0111eno vrijeme izme\u0111u svake procedure mo\u017ee \u010diniti malim, to mo\u017ee napraviti zna\u010dajnu razliku u odnosu na broj procedura poduzetih u danu ili sedmici, u kona\u010dnici skra\u0107uju\u0107i vrijeme \u010dekanja pacijenata na planirane kirur\u0161ke i dijagnosti\u010dke procedure.<\/p>\n<p>Mobilne i modularne operacione sale predstavljaju visoko kontrolisano okru\u017eenje, \u0161to olak\u0161ava izra\u010dunavanje potrebnog broja izmena vazduha u svakom slu\u010daju. Osim \u0161to pove\u0107avaju kapacitet za smanjenje lista \u010dekanja, ove jedinice u nekim slu\u010dajevima mogu ponuditi ve\u0107i broj izmjena zraka po satu od internih objekata bolnice, \u0161to dodatno pove\u0107ava propusnost.<\/p>\n<p>Vanguard&#039;s <a href=\"\/bs_ba\/facilities\/operating-theatres\/\">mobilne operacione sale<\/a> i <a href=\"\/bs_ba\/facilities\/endoscopy\/\">paketi za endoskopiju<\/a> nude HEPA filtrirani zrak okoline sa do 30 izmjena svje\u017eeg zraka na sat koji prolazi preko pacijenta, dok <a href=\"\/bs_ba\/facilities\/operating-theatres\/\">mobilni laminarni teatar<\/a> mo\u017ee izvr\u0161iti do 60 izmjena zraka na sat u pozori\u0161noj sali.<\/p>\n<p>Dodatne informacije dostupne su u &#039;<a href=\"https:\/\/icmanaesthesiacovid-19.org\/managing-theatre-processes-for-planned-surgery-between-covid-19-surges\">Upravljanje procesima u kazali\u0161tu za planiranu operaciju izme\u0111u naleta COVID-19<\/a>&#039;, zajedni\u010dki dokument sa smjernicama Fakulteta za intenzivnu njegu, Dru\u0161tva za intenzivnu njegu, Udru\u017eenja anesteziologa i Kraljevskog koled\u017ea anesteziologa, koji je tako\u0111er podr\u017eao Kraljevski koled\u017e hirurga Engleske.<\/p>\n<p>The <a href=\"https:\/\/www.rcseng.ac.uk\/coronavirus\/recovery-of-surgical-services\/\">Kraljevski koled\u017e hirurga<\/a> Engleske, the <a href=\"https:\/\/www.alsgbi.org\/2020\/04\/22\/laparoscopy-in-the-covid-19-environment-alsgbi-position-statement\/\">Udru\u017eenje laparoskopskih hirurga Velike Britanije i Irske<\/a> i an <a href=\"https:\/\/www.rcseng.ac.uk\/coronavirus\/joint-guidance-for-surgeons-v2\/\">me\u0111ukolegijsku grupu<\/a> hirur\u0161kih organizacija su tako\u0111er objavile dokumente sa smjernicama o hirur\u0161kim aspektima planiranih puteva i upravljanja pacijentima tokom Covid-19.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kako se planirana operacija nastavlja u bolnicama, uz brigu o pacijentima Covid-19, mjere opreza zasnovane na prijenosu ostaju klju\u010dne za minimiziranje rizika i osiguravanje da se procedure odvijaju. Ali brzina mogu\u0107ih izmjena zraka u operacionim salama tako\u0111er je klju\u010dni faktor.<\/p>","protected":false},"author":1,"featured_media":1366,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2,115],"tags":[137,5,122],"class_list":["post-3619","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-products-and-services","tag-endoscopy-suite","tag-mobile","tag-operating-theatre"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The importance of air changes - Vanguard Healthcare Solutions<\/title>\n<meta name=\"description\" content=\"Transmission-based precautions as well as the rate of air changes possible in operating theatres are crucial to continue care during Covid-19\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.vanguardhealthcare.co.uk\/bs_ba\/the-importance-of-air-changes\/\" \/>\n<meta property=\"og:locale\" content=\"bs_BA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The importance of air changes - 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