{"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\/cs_cz\/the-importance-of-air-changes\/","title":{"rendered":"V\u00fdznam zm\u011bn vzduchu"},"content":{"rendered":"<p>Vzhledem k tomu, \u017ee pl\u00e1novan\u00e9 operace v nemocnic\u00edch pokra\u010duj\u00ed, spolu s p\u00e9\u010d\u00ed o pacienty s Covid-19 z\u016fst\u00e1vaj\u00ed opat\u0159en\u00ed zalo\u017een\u00e1 na p\u0159enosu kl\u00ed\u010dov\u00e1 pro minimalizaci rizik a zaji\u0161t\u011bn\u00ed toho, aby postupy pokra\u010dovaly. Kl\u00ed\u010dov\u00fdm faktorem je ale tak\u00e9 rychlost mo\u017en\u00fdch zm\u011bn vzduchu na opera\u010dn\u00edch s\u00e1lech.<\/p>\n<p>Krom\u011b sn\u00ed\u017een\u00ed rizika infekce m\u016f\u017ee m\u00edt doba pot\u0159ebn\u00e1 k odstran\u011bn\u00ed aerosol\u016f z klinick\u00fdch prostor ventila\u010dn\u00edmi syst\u00e9my v\u00fdznamn\u00fd vliv na dobu pot\u0159ebnou mezi chirurgick\u00fdmi a diagnostick\u00fdmi postupy, a tedy i na \u00farove\u0148 \u00fa\u010dinnosti na opera\u010dn\u00edch s\u00e1lech a s\u00e1lech.<\/p>\n<p><strong>Minimalizace rizika<\/strong><\/p>\n<p>Mezi rizikov\u00e9 faktory s potenci\u00e1lem ovlivnit p\u0159enos infekce v divadlech pat\u0159\u00ed p\u0159edev\u0161\u00edm pravd\u011bpodobnost, \u017ee pacienti budou m\u00edt Covid-19, co\u017e zase z\u00e1vis\u00ed na adekv\u00e1tnosti a \u00fa\u010dinnosti izolace a p\u0159edb\u011b\u017en\u00e9ho screeningu pacient\u016f a tak\u00e9 na obecn\u00e9 prevalenci onemocn\u011bn\u00ed. m\u00edry p\u0159enosu viru a komunity.<\/p>\n<p>M\u00edra rizika p\u0159i prov\u00e1d\u011bn\u00ed elektivn\u00edho chirurgick\u00e9ho z\u00e1kroku a diagnostick\u00fdch postup\u016f tak\u00e9 z\u00e1vis\u00ed na m\u00edstn\u00edm dodr\u017eov\u00e1n\u00ed p\u0159\u00edslu\u0161n\u00fdch opat\u0159en\u00ed pro kontrolu infekce, jako je p\u0159\u00edprava pacienta, myt\u00ed rukou a pou\u017e\u00edv\u00e1n\u00ed vhodn\u00fdch OOPP.<\/p>\n<p>Ale i kdy\u017e je p\u0159ijata \u0159ada opat\u0159en\u00ed pro bezpe\u010dn\u00fd vstup do non-Covid cesty, jako je sebeizolace, screening na absenci p\u0159\u00edznak\u016f, zv\u00fd\u0161en\u00e1 t\u011blesn\u00e1 teplota a negativn\u00ed testy na antigen p\u0159ed p\u0159ijet\u00edm, ur\u010dit\u00e1 \u00farove\u0148 rizika st\u00e1le p\u0159etrv\u00e1v\u00e1. K dal\u0161\u00edmu sn\u00ed\u017een\u00ed tohoto rizika jsou zapot\u0159eb\u00ed dal\u0161\u00ed opat\u0159en\u00ed, aby se zajistilo, \u017ee infekce nebude p\u0159en\u00e1\u0161ena vzduchem.<\/p>\n<p>Syst\u00e9my filtrace vzduchu na opera\u010dn\u00edch s\u00e1lech sni\u017euj\u00ed riziko infekce \u010d\u00e1sticemi p\u0159en\u00e1\u0161en\u00fdmi vzduchem. HEPA filtr zaji\u0161\u0165uje \u010distotu vzduchu p\u0159iv\u00e1d\u011bn\u00e9ho do kina, v\u00fdm\u011bna vzduchu zaji\u0161\u0165uje p\u0159\u00edvod \u010derstv\u00e9ho vzduchu v mno\u017estv\u00ed dostate\u010dn\u00e9m k na\u0159ed\u011bn\u00ed \u010d\u00e1stic v m\u00edstnosti na vhodnou \u00farove\u0148, p\u0159etlak zaji\u0161\u0165uje, \u017ee vzduch vstupuj\u00edc\u00ed do kina tak \u010din\u00ed v dostate\u010dn\u00e9m mno\u017estv\u00ed. kontrolovan\u00fdm zp\u016fsobem.<\/p>\n<h4><strong>Postupy generuj\u00edc\u00ed aerosol (AGP)<\/strong><\/h4>\n<p>Pokud je u pacienta, o kter\u00e9m je zn\u00e1mo, \u017ee je infikov\u00e1n Covid-19 nebo u kter\u00e9ho nen\u00ed stav COVID-19 nezn\u00e1m\u00fd, nebo kdy\u017e se postup prov\u00e1d\u00ed v m\u00edst\u011b \u201ehotspot\u201c, je t\u0159eba prov\u00e9st zv\u00fd\u0161en\u00e1 opat\u0159en\u00ed ve vzduchu, jak je definov\u00e1no <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\">Pokyny pro Public Health England (PHE).<\/a>.<\/p>\n<p>PHE v sou\u010dasn\u00e9 dob\u011b definuje jak\u00fdkoli opera\u010dn\u00ed s\u00e1l, na kter\u00e9m se pravideln\u011b prov\u00e1d\u011bj\u00ed procedury generuj\u00edc\u00ed aerosol, jako \u201ehotspot\u201c nebo <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\">akutn\u00ed oblast s vy\u0161\u0161\u00edm rizikem<\/a>. OOP pro person\u00e1l na s\u00e1lech, kde se prov\u00e1d\u011bj\u00ed procedury vytv\u00e1\u0159ej\u00edc\u00ed aerosol, by m\u011bly obsahovat minim\u00e1ln\u011b chirurgickou masku odolnou v\u016f\u010di tekutin\u00e1m, aby se minimalizovalo riziko rozpt\u00fdlen\u00ed kapi\u010dek.<\/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\">Postupy generuj\u00edc\u00ed aerosol<\/a> lze rozd\u011blit na respira\u010dn\u00ed a chirurgick\u00e9 AGP, p\u0159i\u010dem\u017e chirurgick\u00e9 AGP maj\u00ed obecn\u011b pravd\u011bpodobn\u011b ni\u017e\u0161\u00ed vnit\u0159n\u00ed riziko, a\u010dkoli mohou vytv\u00e1\u0159et aerosoly po del\u0161\u00ed dobu. P\u0159\u00edklady b\u011b\u017en\u00fdch AGP jsou intubace, extubace, postupy souvisej\u00edc\u00ed s tracheostomi\u00ed, neinvazivn\u00ed ventilace, bronchoskopie, endoskopie horn\u00ed \u010d\u00e1sti gastrointestin\u00e1ln\u00edho traktu a n\u011bkter\u00e9 stomatologick\u00e9 v\u00fdkony.<\/p>\n<p>Kolik v\u00fdm\u011bn vzduchu je pot\u0159eba na opera\u010dn\u00edm s\u00e1le z\u00e1vis\u00ed na typu chirurgick\u00e9ho z\u00e1kroku, kter\u00fd je na n\u011bm proveden, a na pokynech, kter\u00e9 mus\u00ed spl\u0148ovat.<\/p>\n<h4><strong>\u010casy clearance aerosolu (ACTs)<\/strong><\/h4>\n<p>Zat\u00edmco standardn\u00ed opera\u010dn\u00ed s\u00e1l mus\u00ed m\u00edt 20 v\u00fdm\u011bn vzduchu za hodinu, tato rychlost je pravideln\u011b p\u0159ekra\u010dov\u00e1na a s\u00e1ly s lamin\u00e1rn\u00edm proud\u011bn\u00edm m\u00edvaj\u00ed mnohem vy\u0161\u0161\u00ed rychlost. Syst\u00e9my lamin\u00e1rn\u00edho proud\u011bn\u00ed umo\u017e\u0148uj\u00ed p\u0159esn\u011bj\u0161\u00ed regulaci proud\u011bn\u00ed vzduchu v opera\u010dn\u00ed oblasti.<\/p>\n<p>\u0160iroce p\u0159ij\u00edm\u00e1no <a href=\"https:\/\/www.cdc.gov\/infectioncontrol\/guidelines\/environmental\/appendix\/air.html#tableb1\">mezin\u00e1rodn\u00ed sm\u011brnice<\/a> odkazuj\u00ed na \u00fadaje, kter\u00e9 ukazuj\u00ed, \u017ee ka\u017ed\u00e1 v\u00fdm\u011bna vzduchu odstran\u00ed p\u0159ibli\u017en\u011b 631 TP4T ne\u010distot ve vzduchu, p\u0159i\u010dem\u017e &gt;991 TP4T se odstran\u00ed po p\u011bti v\u00fdm\u011bn\u00e1ch vzduchu. Na z\u00e1klad\u011b tohoto p\u0159edpokladu z\u016fst\u00e1v\u00e1 po 10 v\u00fdm\u011bn\u00e1ch pouze 0,004% cirkuluj\u00edc\u00edch aerosol\u016f. A\u010dkoli existuj\u00ed omezen\u00e9 d\u016fkazy na podporu t\u00e9to metody v\u00fdpo\u010dtu, je \u0161iroce pou\u017e\u00edv\u00e1na a pokyny PHE se na ni odvol\u00e1vaj\u00ed.<\/p>\n<p>Jak dlouho trv\u00e1 ur\u010dit\u00fd po\u010det v\u00fdm\u011bn vzduchu, z\u00e1vis\u00ed na ventila\u010dn\u00edm syst\u00e9mu v pou\u017e\u00edvan\u00e9m divadle, m\u00edstnosti nebo budov\u011b. <a href=\"https:\/\/associationofanaesthetists-publications.onlinelibrary.wiley.com\/doi\/full\/10.1111\/anae.15146#anae15146-bib-0001\">V\u00fdpo\u010det<\/a> pro \u201edobu \u010di\u0161t\u011bn\u00ed aerosolu\u201c (ACT) \u2013 \u010das v minut\u00e1ch pro v\u00fdm\u011bnu vzduchu v m\u00edstnosti \u2013 je 60 d\u011bleno po\u010dtem v\u00fdm\u011bn vzduchu za hodinu nam\u011b\u0159en\u00fdch nebo odhadnut\u00fdch pro danou m\u00edstnost. V\u00fdsledn\u00fd \u010das v minut\u00e1ch se pak vyn\u00e1sob\u00ed po\u010dtem pot\u0159ebn\u00fdch v\u00fdm\u011bn vzduchu.<\/p>\n<p>Obecn\u00e1 pravidla a doporu\u010den\u00ed by se v\u0161ak m\u011bla pou\u017e\u00edvat opatrn\u011b. Ve skute\u010dnosti z\u00e1vis\u00ed doba uvol\u0148ov\u00e1n\u00ed aerosolu na charakteristik\u00e1ch m\u00edstnosti a je specifick\u00e1 pro dan\u00e9 m\u00edsto. Aby bylo mo\u017en\u00e9 vypo\u010d\u00edtat dobu odstra\u0148ov\u00e1n\u00ed aerosolu pro jednotlivou m\u00edstnost nebo divadlo, mus\u00ed zdravotn\u00ed slu\u017eba zn\u00e1t v\u00fdm\u011bnn\u00e9 kurzy vzduchu pro ka\u017ed\u00e9 m\u00edsto divadla. Zat\u00edmco v\u011bt\u0161ina opera\u010dn\u00edch s\u00e1l\u016f m\u00e1 vysokou m\u00edru ventilace, obvykle p\u0159i 20 nebo v\u00edce v\u00fdm\u011bn\u00e1ch vzduchu za hodinu, m\u016f\u017ee se to li\u0161it a doch\u00e1z\u00ed k <a href=\"https:\/\/assets.publishing.service.gov.uk\/government\/uploads\/system\/uploads\/attachment_data\/file\/144029\/HTM_03-01_Part_A.pdf\">z\u00e1konn\u00fd po\u017eadavek<\/a> pro m\u011b\u0159en\u00ed rychlosti ventilace ka\u017ed\u00fdch 14 m\u011bs\u00edc\u016f.<strong>&#160;<\/strong><\/p>\n<h4><strong>Doba odbaven\u00ed mezi procedurami<\/strong><\/h4>\n<p>A <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1111\/anae.15146\">dopis zve\u0159ejn\u011bn\u00fd Asociac\u00ed anesteziolog\u016f<\/a> v \u010dervnu navrhl, \u017ee mezi jednotliv\u00fdmi procedurami by m\u011bla b\u00fdt ponech\u00e1na doba clearance aerosolu (ACT), kter\u00e1 se rovn\u00e1 dob\u011b, kterou trv\u00e1 p\u011bt v\u00fdm\u011bn vzduchu \u2013 jak bylo nam\u011b\u0159eno pro konkr\u00e9tn\u00ed s\u00e1l \u2013 aby bylo umo\u017en\u011bno dostate\u010dn\u00e9 uvol\u0148ov\u00e1n\u00ed aerosolu. Na toto doporu\u010den\u00ed se b\u011b\u017en\u011b odkazuje, nicm\u00e9n\u011b odhady z jin\u00fdch zdroj\u016f se pohybuj\u00ed od dvou ACT a\u017e po 10\u201315 ACT.<\/p>\n<p>Vych\u00e1z\u00edme-li z p\u0159edpokladu, \u017ee mezi jednotliv\u00fdmi procedurami je zapot\u0159eb\u00ed p\u011bt v\u00fdm\u011bn vzduchu, standardn\u00ed opera\u010dn\u00ed s\u00e1l s 20 v\u00fdm\u011bnami vzduchu za hodinu by pot\u0159eboval 15minutovou dobu \u010di\u0161t\u011bn\u00ed. Ventila\u010dn\u00ed syst\u00e9my s lamin\u00e1rn\u00edm proud\u011bn\u00edm mohou m\u00edt mnohem vy\u0161\u0161\u00ed po\u010det v\u00fdm\u011bn vzduchu za hodinu, co\u017e znamen\u00e1, \u017ee mezi procedurami je zapot\u0159eb\u00ed krat\u0161\u00ed doba.<\/p>\n<p>Je na ka\u017ed\u00e9m poskytovateli zdravotn\u00ed p\u00e9\u010de, aby se rozhodl o sv\u00e9 vlastn\u00ed politice, pokud jde o to, jak\u00e1 frekvence v\u00fdm\u011bny vzduchu je p\u0159ijateln\u00e1 pro bezpe\u010dn\u00e9 odstran\u011bn\u00ed aerosol\u016f, na z\u00e1klad\u011b jejich zn\u00e1m\u00fdch rychlost\u00ed v\u00fdm\u011bny vzduchu v klinick\u00fdch oblastech. I kdy\u017e jsou k dispozici typick\u00e9 rozsahy pro r\u016fzn\u00e9 typy za\u0159\u00edzen\u00ed, pou\u017eit\u00ed odhad\u016f sp\u00ed\u0161e ne\u017e tvrd\u00fdch dat m\u016f\u017ee b\u00fdt spojeno s rizikem.<\/p>\n<p>Nav\u00edc u pacient\u016f pozitivn\u00edch na Covid nebo u pacient\u016f, jejich\u017e stav Covid nen\u00ed zn\u00e1m, m\u016f\u017ee b\u00fdt vy\u017eadov\u00e1n negativn\u00ed tlak, aby se sn\u00ed\u017eilo riziko infekce mimo prost\u0159ed\u00ed divadla.<\/p>\n<p><strong>Zlep\u0161en\u00ed doby obratu divadla<\/strong><\/p>\n<p>Bez ohledu na po\u010det v\u00fdm\u011bn vzduchu, kter\u00fd nemocnice mezi jednotliv\u00fdmi procedurami prov\u00e1d\u00ed, nen\u00ed pochyb o tom, \u017ee politika, pro kterou se ka\u017ed\u00e1 nemocnice rozhodne, m\u016f\u017ee m\u00edt podstatn\u00fd dopad na \u00farove\u0148 produktivity na s\u00e1le. Zkr\u00e1cen\u00ed doby pot\u0159ebn\u00e9 pro ka\u017edou v\u00fdm\u011bnu vzduchu, a tedy i \u010dekac\u00ed doby v divadle, m\u016f\u017ee v\u00e9st ke zv\u00fd\u0161en\u00ed efektivity a p\u0159\u00edmo ovlivnit, kolik pacient\u016f lze o\u0161et\u0159it za jeden den.<\/p>\n<p>\u010c\u00edm vy\u0161\u0161\u00ed jsou proudy vzduchu a po\u010det v\u00fdm\u011bn vzduchu za hodinu, kter\u00e9 jsou mo\u017en\u00e9 v m\u00edstnosti nebo divadle, t\u00edm rychleji <a href=\"https:\/\/bjanaesthesia.org\/article\/S0007-0912(20)30853-9\/fulltext\">aerosoly lze vy\u010distit<\/a>a t\u00edm rychlej\u0161\u00ed m\u016f\u017ee b\u00fdt doba obratu pacienta. P\u0159esto\u017ee se rozd\u00edl a u\u0161et\u0159en\u00fd \u010das mezi jednotliv\u00fdmi v\u00fdkony mohou zd\u00e1t mal\u00e9, m\u016f\u017ee m\u00edt podstatn\u00fd rozd\u00edl v po\u010dtu v\u00fdkon\u016f proveden\u00fdch za den nebo t\u00fdden, co\u017e v kone\u010dn\u00e9m d\u016fsledku zkracuje \u010dekac\u00ed doby pacienta na pl\u00e1novan\u00e9 chirurgick\u00e9 a diagnostick\u00e9 v\u00fdkony.<\/p>\n<p>Mobiln\u00ed a modul\u00e1rn\u00ed opera\u010dn\u00ed s\u00e1ly p\u0159edstavuj\u00ed vysoce kontrolovan\u00e1 prost\u0159ed\u00ed, co\u017e usnad\u0148uje v\u00fdpo\u010det po\u010dtu nutn\u00fdch v\u00fdm\u011bn vzduchu v ka\u017ed\u00e9m p\u0159\u00edpad\u011b. Krom\u011b zv\u00fd\u0161en\u00ed kapacity, kter\u00e1 pom\u00e1h\u00e1 zkr\u00e1tit \u010dekac\u00ed listiny, mohou tyto jednotky v n\u011bkter\u00fdch p\u0159\u00edpadech nab\u00eddnout vy\u0161\u0161\u00ed po\u010det v\u00fdm\u011bn vzduchu za hodinu ne\u017e intern\u00ed za\u0159\u00edzen\u00ed nemocnice, co\u017e je\u0161t\u011b v\u00edce zvy\u0161uje propustnost.<\/p>\n<p>Vanguard <a href=\"\/cs_cz\/facilities\/operating-theatres\/\">mobiln\u00ed opera\u010dn\u00ed s\u00e1ly<\/a> a <a href=\"\/cs_cz\/facilities\/endoscopy\/\">endoskopick\u00e9 soupravy<\/a> nab\u00edz\u00ed okoln\u00ed vzduch filtrovan\u00fd HEPA s a\u017e 30 v\u00fdm\u011bnami \u010derstv\u00e9ho vzduchu za hodinu, kter\u00fd proch\u00e1z\u00ed nad pacientem, <a href=\"\/cs_cz\/facilities\/operating-theatres\/\">mobiln\u00ed divadlo s lamin\u00e1rn\u00edm proud\u011bn\u00edm<\/a> m\u016f\u017ee prov\u00e9st a\u017e 60 v\u00fdm\u011bn vzduchu za hodinu v divadeln\u00ed m\u00edstnosti.<\/p>\n<p>Dal\u0161\u00ed informace jsou k dispozici v &#039;<a href=\"https:\/\/icmanaesthesiacovid-19.org\/managing-theatre-processes-for-planned-surgery-between-covid-19-surges\">\u0158\u00edzen\u00ed opera\u010dn\u00edch proces\u016f pro pl\u00e1novan\u00e9 operace mezi n\u00e1valy COVID-19<\/a>\u201c, spole\u010dn\u00fd dokument s pokyny Fakulty intenzivn\u00ed medic\u00edny, Spole\u010dnosti intenzivn\u00ed p\u00e9\u010de, Asociace anesteziolog\u016f a Kr\u00e1lovsk\u00e9 vysok\u00e9 \u0161koly anesteziolog\u016f, rovn\u011b\u017e schv\u00e1len\u00fd Royal College of Surgeons of England.<\/p>\n<p>The <a href=\"https:\/\/www.rcseng.ac.uk\/coronavirus\/recovery-of-surgical-services\/\">Royal College of Surgeons<\/a> Anglie, <a href=\"https:\/\/www.alsgbi.org\/2020\/04\/22\/laparoscopy-in-the-covid-19-environment-alsgbi-position-statement\/\">Asociace laparoskopick\u00fdch chirurg\u016f Velk\u00e9 Brit\u00e1nie a Irska<\/a> a <a href=\"https:\/\/www.rcseng.ac.uk\/coronavirus\/joint-guidance-for-surgeons-v2\/\">meziuniverzitn\u00ed skupina<\/a> chirurgick\u00e9 organizace tak\u00e9 zve\u0159ejnily pokyny k chirurgick\u00fdm aspekt\u016fm pl\u00e1novan\u00fdch cest a managementu pacient\u016f b\u011bhem Covid-19.<\/p>","protected":false},"excerpt":{"rendered":"<p>Vzhledem k tomu, \u017ee pl\u00e1novan\u00e9 operace v nemocnic\u00edch pokra\u010duj\u00ed, spolu s p\u00e9\u010d\u00ed o pacienty s Covid-19 z\u016fst\u00e1vaj\u00ed opat\u0159en\u00ed zalo\u017een\u00e1 na p\u0159enosu kl\u00ed\u010dov\u00e1 pro minimalizaci rizik a zaji\u0161t\u011bn\u00ed toho, aby postupy pokra\u010dovaly. Kl\u00ed\u010dov\u00fdm faktorem je ale tak\u00e9 rychlost mo\u017en\u00fdch zm\u011bn vzduchu na opera\u010dn\u00edch s\u00e1lech.<\/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\/cs_cz\/the-importance-of-air-changes\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The importance of air changes - 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