{"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\/ro_ro\/the-importance-of-air-changes\/","title":{"rendered":"Importan\u021ba schimb\u0103rilor de aer"},"content":{"rendered":"<p>Pe m\u0103sur\u0103 ce interven\u021bia chirurgical\u0103 planificat\u0103 continu\u0103 \u00een spitale, al\u0103turi de \u00eengrijirea pacien\u021bilor cu Covid-19, m\u0103surile de precau\u021bie bazate pe transmitere r\u0103m\u00e2n esen\u021biale pentru a minimiza riscul \u0219i pentru a asigura ca procedurile s\u0103 continue. Dar rata schimb\u0103rilor de aer posibile \u00een s\u0103lile de opera\u021bie este, de asemenea, un factor cheie.<\/p>\n<p>Pe l\u00e2ng\u0103 reducerea riscului de infec\u021bie, timpul necesar pentru ca aerosolii s\u0103 fie cur\u0103\u021ba\u021bi din zonele clinice prin sistemele de ventila\u021bie poate avea un impact semnificativ asupra timpului necesar \u00eentre procedurile chirurgicale \u0219i de diagnosticare \u0219i, prin urmare, asupra nivelurilor de eficien\u021b\u0103 \u00een s\u0103lile de opera\u021bie \u0219i s\u0103lile de proceduri.<\/p>\n<p><strong>Minimizarea riscului<\/strong><\/p>\n<p>Factorii de risc cu poten\u021bialul de a influen\u021ba transmiterea infec\u021biei \u00een cinematografe includ probabilitatea ca pacien\u021bii s\u0103 aib\u0103 Covid-19 \u00een primul r\u00e2nd, care, la r\u00e2ndul s\u0103u, depinde de adecvarea \u0219i eficacitatea izol\u0103rii \u0219i pre-screening-ului pacien\u021bilor, precum \u0219i de prevalen\u021ba general\u0103 a ratele de transmitere a virusului \u0219i a comunit\u0103\u021bii.<\/p>\n<p>Nivelul de risc atunci c\u00e2nd se efectueaz\u0103 interven\u021bii chirurgicale elective \u0219i proceduri de diagnostic depinde, de asemenea, de respectarea la nivel local la m\u0103surile de precau\u021bie relevante pentru controlul infec\u021biilor, cum ar fi preg\u0103tirea pacientului, sp\u0103larea m\u00e2inilor \u0219i utilizarea EIP adecvat\u0103.<\/p>\n<p>Dar chiar \u0219i \u00een cazul \u00een care sunt luate o serie de m\u0103suri pentru intrarea \u00een siguran\u021b\u0103 pe calea non-Covid, cum ar fi autoizolarea, screening-ul pentru absen\u021ba simptomelor, cre\u0219terea temperaturii corpului \u0219i teste negative pentru antigen \u00eenainte de internare, r\u0103m\u00e2ne un anumit nivel de risc. Pentru a reduce \u0219i mai mult acest risc, sunt necesare m\u0103suri de precau\u021bie suplimentare pentru a se asigura c\u0103 infec\u021bia nu este transmis\u0103 prin aer.<\/p>\n<p>Sistemele de filtrare a aerului din s\u0103lile de opera\u021bie reduc riscul de infec\u021bie cu particulele din aer. Filtrul HEPA asigur\u0103 c\u0103 aerul furnizat \u00een cinematograf este curat, schimburile de aer asigur\u0103 furnizarea de aer proasp\u0103t \u00eentr-o cantitate suficient\u0103 pentru a dilua particulele din camer\u0103 la un nivel adecvat, \u00een timp ce presiunea pozitiv\u0103 asigur\u0103 c\u0103 aerul care intr\u0103 \u00een cinematograf face acest lucru \u00eentr-un mod controlat.<\/p>\n<h4><strong>Proceduri generatoare de aerosoli (AGP)<\/strong><\/h4>\n<p>Sunt necesare m\u0103suri de precau\u021bie sporite \u00een aer atunci c\u00e2nd se efectueaz\u0103 o procedur\u0103 generatoare de aerosoli (AGP) pe un pacient despre care se \u0219tie c\u0103 este infectat cu Covid-19 sau pentru care starea Covid-19 este necunoscut\u0103, sau se efectueaz\u0103 o procedur\u0103 \u00eentr-o loca\u021bie \u201ehotspot\u201d, asa cum este definit de <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\">Ghid pentru S\u0103n\u0103tatea Public\u0103 Anglia (PHE).<\/a>.<\/p>\n<p>PHE define\u0219te \u00een prezent orice sal\u0103 de opera\u021bii \u00een care procedurile de generare de aerosoli sunt \u00eentreprinse \u00een mod regulat ca loca\u021bie \u201ehotspot\u201d sau <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\">zon\u0103 acut\u0103 cu risc mai mare<\/a>. Ca minim, EIP pentru personalul din s\u0103lile \u00een care sunt efectuate proceduri de generare de aerosoli ar trebui s\u0103 includ\u0103 o masc\u0103 chirurgical\u0103 rezistent\u0103 la lichide pentru a minimiza riscul de dispersare a pic\u0103turilor.<\/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\">Proceduri generatoare de aerosoli<\/a> pot fi \u00eemp\u0103r\u021bite \u00een AGP respiratorii \u0219i chirurgicale, cu AGP chirurgicale, \u00een general, probabil s\u0103 aib\u0103 un risc intrinsec mai mic, de\u0219i pot genera aerosoli pentru perioade mai lungi. Exemple de AGP obi\u0219nuite sunt intubarea, extubarea, procedurile legate de traheostomie, ventila\u021bia neinvaziv\u0103, bronhoscopia, endoscopia gastro-intestinal\u0103 superioar\u0103 \u0219i anumite proceduri dentare.<\/p>\n<p>C\u00e2te schimb\u0103ri de aer sunt necesare pentru o sal\u0103 de opera\u021bie depind de tipul de interven\u021bie chirurgical\u0103 efectuat\u0103 \u00een acesta \u0219i de liniile directoare pe care trebuie s\u0103 le respecte.<\/p>\n<h4><strong>Timpi de eliminare a aerosolilor (ACT)<\/strong><\/h4>\n<p>\u00cen timp ce o sal\u0103 de opera\u021bie standard trebuie s\u0103 aib\u0103 20 de schimburi de aer pe or\u0103, aceast\u0103 rat\u0103 este dep\u0103\u0219it\u0103 \u00een mod regulat, iar teatrele cu flux laminar tind s\u0103 aib\u0103 o rat\u0103 mult mai mare dec\u00e2t aceasta. Sistemele cu flux laminar permit ca fluxul de aer s\u0103 fie controlat mai str\u00e2ns \u00een zona de operare.<\/p>\n<p>Acceptat la scar\u0103 larg\u0103 <a href=\"https:\/\/www.cdc.gov\/infectioncontrol\/guidelines\/environmental\/appendix\/air.html#tableb1\">orient\u0103ri interna\u021bionale<\/a> consulta\u021bi datele care indic\u0103 faptul c\u0103 fiecare schimbare de aer elimin\u0103 aproximativ 63% de contaminan\u021bi din aer, cu &gt;99% \u00eendep\u0103rta\u021bi dup\u0103 cinci schimb\u0103ri de aer. Pe baza acestei ipoteze, dup\u0103 10 schimburi r\u0103m\u00e2n doar 0,004% din aerosolii circulan\u021bi. De\u0219i exist\u0103 dovezi limitate pentru a sus\u021bine aceast\u0103 metod\u0103 de calcul, este utilizat\u0103 pe scar\u0103 larg\u0103, iar ghidul PHE se refer\u0103 la aceasta.<\/p>\n<p>C\u00e2t timp dureaz\u0103 realizarea unui anumit num\u0103r de schimb\u0103ri de aer depinde de sistemul de ventila\u021bie din teatrul, \u00eenc\u0103perea sau cl\u0103direa utilizat\u0103. <a href=\"https:\/\/associationofanaesthetists-publications.onlinelibrary.wiley.com\/doi\/full\/10.1111\/anae.15146#anae15146-bib-0001\">Calculul<\/a> pentru \u201etimpul de eliminare a aerosolilor\u201d (ACT) - timpul necesar \u00een minute pentru un schimb de aer \u00eentr-o \u00eenc\u0103pere - este 60 \u00eemp\u0103r\u021bit la num\u0103rul de schimburi de aer pe or\u0103 m\u0103surate sau estimate pentru camera respectiv\u0103. Timpul rezultat \u00een minute este apoi \u00eenmul\u021bit cu num\u0103rul de schimburi de aer necesare.<\/p>\n<p>Cu toate acestea, orient\u0103rile \u0219i recomand\u0103rile generice trebuie utilizate cu pruden\u021b\u0103. \u00cen realitate, timpii de eliminare a aerosolilor depind de caracteristicile camerei \u0219i sunt specifici loca\u021biei. Pentru a calcula timpul de eliberare a aerosolilor pentru o camer\u0103 sau un teatru individual, serviciul de s\u0103n\u0103tate trebuie s\u0103 cunoasc\u0103 ratele de schimb de aer pentru fiecare loca\u021bie a teatrului. \u00cen timp ce majoritatea s\u0103lilor de opera\u021bie au o rat\u0103 mare de ventila\u021bie, \u00een general la 20 sau mai multe schimb\u0103ri de aer pe or\u0103, aceasta poate varia \u0219i exist\u0103 o <a href=\"https:\/\/assets.publishing.service.gov.uk\/government\/uploads\/system\/uploads\/attachment_data\/file\/144029\/HTM_03-01_Part_A.pdf\">cerin\u021b\u0103 legal\u0103<\/a> pentru ca ratele de ventila\u021bie s\u0103 fie m\u0103surate la fiecare 14 luni.<strong>&#160;<\/strong><\/p>\n<h4><strong>Timp de lichidare \u00eentre proceduri<\/strong><\/h4>\n<p>A <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/full\/10.1111\/anae.15146\">scrisoare publicat\u0103 de Asocia\u0163ia Anestezi\u015ftilor<\/a> \u00een iunie a sugerat c\u0103 un timp de eliminare a aerosolilor (ACT) egal cu timpul necesar pentru cinci schimb\u0103ri de aer pentru a trece prin cicluri - a\u0219a cum este m\u0103surat pentru un anumit cinematograf - ar trebui l\u0103sat \u00eentre proceduri pentru a permite un clearance suficient pentru aerosoli. La aceast\u0103 recomandare se face referire \u00een mod obi\u0219nuit, totu\u0219i, estim\u0103rile din alte surse variaz\u0103 de la dou\u0103 ACT p\u00e2n\u0103 la 10-15 ACT.<\/p>\n<p>Pe baza ipotezei c\u0103 sunt necesare cinci schimb\u0103ri de aer \u00eentre proceduri, o sal\u0103 de opera\u021bie standard cu 20 de schimb\u0103ri de aer pe or\u0103 ar avea nevoie de un timp liber de 15 minute. Sistemele de ventila\u021bie cu flux laminar pot avea un num\u0103r mult mai mare de schimb\u0103ri de aer pe or\u0103, ceea ce \u00eenseamn\u0103 c\u0103 este necesar un timp mai scurt \u00eentre proceduri.<\/p>\n<p>Este la latitudinea fiec\u0103rui furnizor de s\u0103n\u0103tate s\u0103 decid\u0103 propria politic\u0103 \u00een ceea ce prive\u0219te frecven\u021ba de schimbare a aerului acceptabil\u0103 pentru eliminarea \u00een siguran\u021b\u0103 a aerosolilor, pe baza ratelor de schimb de aer cunoscute \u00een zonele clinice. De\u0219i sunt disponibile intervale tipice pentru diferite tipuri de instala\u021bii, utilizarea estim\u0103rilor, mai degrab\u0103 dec\u00e2t a datelor concrete, poate fi asociat\u0103 cu riscul.<\/p>\n<p>\u00cen plus, pentru pacien\u021bii cu Covid-pozitivi sau pentru pacien\u021bii a c\u0103ror stare Covid este necunoscut\u0103, poate fi necesar\u0103 o presiune negativ\u0103 pentru a reduce riscul de infec\u021bie \u00een afara mediului de teatru.<\/p>\n<p><strong>\u00cembun\u0103t\u0103\u021birea timpilor de func\u021bionare a teatrului<\/strong><\/p>\n<p>Indiferent de num\u0103rul de schimb\u0103ri de aer pe care un spital le are \u00eentre proceduri, nu exist\u0103 nicio \u00eendoial\u0103 c\u0103 politica pe care o decide fiecare spital poate avea implica\u021bii substan\u021biale asupra nivelurilor de productivitate a teatrului. O reducere a timpului necesar pentru fiecare schimbare de aer \u0219i, prin urmare, a timpilor de a\u0219teptare \u00een teatru, poate duce la c\u00e2\u0219tiguri de eficacitate \u0219i poate avea un impact direct asupra num\u0103rului de pacien\u021bi care pot fi trata\u021bi \u00eentr-o zi.<\/p>\n<p>Cu c\u00e2t sunt mai mari fluxurile de aer \u0219i num\u0103rul de schimb\u0103ri de aer pe or\u0103 posibile \u00eentr-o camer\u0103 sau teatru, cu at\u00e2t mai rapid <a href=\"https:\/\/bjanaesthesia.org\/article\/S0007-0912(20)30853-9\/fulltext\">aerosolii pot fi cur\u0103\u021ba\u021bi<\/a>, \u0219i cu at\u00e2t timpii de r\u0103spuns ale pacientului pot fi mai rapidi. De\u0219i diferen\u021ba \u0219i timpul economisit \u00eentre fiecare procedur\u0103 poate p\u0103rea mic\u0103, poate face o diferen\u021b\u0103 substan\u021bial\u0103 \u00een ceea ce prive\u0219te num\u0103rul de proceduri \u00eentreprinse \u00eentr-o zi sau \u00eentr-o s\u0103pt\u0103m\u00e2n\u0103, reduc\u00e2nd \u00een cele din urm\u0103 timpii de a\u0219teptare ale pacientului pentru procedurile chirurgicale \u0219i de diagnosticare planificate.<\/p>\n<p>S\u0103lile de opera\u021bie mobile \u0219i modulare reprezint\u0103 medii extrem de controlate, ceea ce faciliteaz\u0103 calculul num\u0103rului de schimb\u0103ri de aer necesare \u00een fiecare caz. Pe l\u00e2ng\u0103 ad\u0103ugarea capacit\u0103\u021bii pentru a ajuta la reducerea listelor de a\u0219teptare, aceste unit\u0103\u021bi pot oferi, \u00een unele cazuri, un num\u0103r mai mare de schimb\u0103ri de aer pe or\u0103 dec\u00e2t facilit\u0103\u021bile interne ale unui spital, cresc\u00e2nd \u0219i mai mult debitul.<\/p>\n<p>Vanguard <a href=\"\/ro_ro\/facilities\/operating-theatres\/\">s\u0103li de opera\u021bii mobile<\/a> \u0219i <a href=\"\/ro_ro\/facilities\/endoscopy\/\">cabinete de endoscopie<\/a> ofer\u0103 aer de mediu filtrat HEPA cu p\u00e2n\u0103 la 30 de schimburi de aer proasp\u0103t pe or\u0103 care trec peste pacient, \u00een timp ce un <a href=\"\/ro_ro\/facilities\/operating-theatres\/\">teatru mobil cu flux laminar<\/a> poate efectua p\u00e2n\u0103 la 60 de schimb\u0103ri de aer pe or\u0103 \u00een sala de teatru.<\/p>\n<p>Informa\u021bii suplimentare sunt disponibile \u00een \u201e<a href=\"https:\/\/icmanaesthesiacovid-19.org\/managing-theatre-processes-for-planned-surgery-between-covid-19-surges\">Gestionarea proceselor de teatru pentru interven\u021bii chirurgicale planificate \u00eentre crizele COVID-19<\/a>&#039;, un document de orientare comun al Facult\u0103\u021bii de Medicin\u0103 de Terapie Intensiv\u0103, Societatea de Terapie Intensiv\u0103, Asocia\u021bia Anestezi\u015ftilor \u0219i Colegiul Regal al Anestezi\u0219tilor, aprobat \u0219i de Colegiul Regal al Chirurgilor din Anglia.<\/p>\n<p>The <a href=\"https:\/\/www.rcseng.ac.uk\/coronavirus\/recovery-of-surgical-services\/\">Colegiul Regal al Chirurgilor<\/a> al Angliei, cel <a href=\"https:\/\/www.alsgbi.org\/2020\/04\/22\/laparoscopy-in-the-covid-19-environment-alsgbi-position-statement\/\">Asocia\u021bia Chirurgilor Laparoscopici din Marea Britanie \u0219i Irlanda<\/a> si un <a href=\"https:\/\/www.rcseng.ac.uk\/coronavirus\/joint-guidance-for-surgeons-v2\/\">grup intercolegial<\/a> dintre organiza\u021biile chirurgicale au publicat, de asemenea, documente de orientare privind aspectele chirurgicale ale c\u0103ilor planificate \u0219i managementul pacien\u021bilor \u00een timpul Covid-19.<\/p>","protected":false},"excerpt":{"rendered":"<p>Pe m\u0103sur\u0103 ce interven\u021bia chirurgical\u0103 planificat\u0103 continu\u0103 \u00een spitale, al\u0103turi de \u00eengrijirea pacien\u021bilor cu Covid-19, m\u0103surile de precau\u021bie bazate pe transmitere r\u0103m\u00e2n esen\u021biale pentru a minimiza riscul \u0219i pentru a asigura ca procedurile s\u0103 continue. Dar rata schimb\u0103rilor de aer posibile \u00een s\u0103lile de opera\u021bie este, de asemenea, un factor cheie.<\/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 v27.5 - 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\/ro_ro\/the-importance-of-air-changes\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The importance of air changes - 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