Ukwenza Kanjani Amakhaya Okuzimisa Ngokujwayelekile Okwenzayo Ngokusebenzisa I-HVAC?

Izinsiza Zokudesigna Kwemithambo Yokuqonda Kwamakhaya Okuqondisa PCR Ukulawula Ukungena Kwamazinyo

Kungani Amakhaya Okuqondisa PCR Kufanele Abe Nokulawula Kwemithambo Yokuqonda: Ukulawula Ukuphuma Kwamazinyo Okuqondisa

Emazinkundleni e-PCR, izinkinga zokusebenza kwe-HVAC ziyisikhundla kakhulu ngoba kufanele sibulale ukuthi iziqu zezimfuno zezinye zingene emazinkundleni amasha. Kungaba yizinto ezincinci zokuthi i-DNA noma i-RNA zihlala zihlaza emhlabathini kusukela kwezimfuno zezinye zokuziphatha kahle emazinkundleni amasha futhi zithola iziphelo esizimele zokuthi zilungile kahle okungafanele. Futhi qinisekisa, i-PCR ibhekisela kubukhona kwesikhundla kwezinhlobo zokuthi zihlala zihlaza kahle kahle. Ngakho-ke, isithili esinye sokuthi singasemva kwezimfuno zezinye singasebenza kahle kakhulu kakhulu kuzokuthi zilungile kahle. Lokhu-ke kuyisibonelo sokuthi ukuthi izinkinga zokusebenza kwe-HVAC ziyisikhundla kakhulu ngoba ziyabulala izinto zonke ezincinci zemhlabathi futhi zibheka ukuthi umlando wokuhamba kwemhlabathi uyisikhundla esihle. Umhlabathi kufanele uhlale uhlaza kusukela kwezindawo zokuphatha izinkampani ezihlala zihlaza kusukela kwezindawo zokuphatha izinto emva kokuthi ukuthi kubhekiswe kahle kahle. Uma lezi zinkinga zokusebenza azikwazi ukuthi zihlanganise kahle, izindawo ezahlukene zomkhumbulo zihlala zihlanganisa kahle kahle okuyisibonelo sokuthi izimfuno azilungile kahle futhi ngamanye amaxesha abadokotela bahlala bathetha iziphelo esizimele ngokuthi zilungile kahle ngokuthi zilungile kahle.

Izindlela Zokusebenza Ezinkulu: Izimfanzi Zokusebenza Zokuhlanzwa Zase-ISO, Umoya Ophuma Kuphakade, Nokuhlanzwa Ngamaphetha Ama-HEPA

Ukudesigna izisitemu zesikhathi sokuhlanza isikhathi esihle (HVAC) kumaziko we-PCR kuyisibonelo sesithathu sezindlela ezinamandla okunye. Isibonelo sokuqala sifuna ukufikilela emaqhingeni e-ISO yokuhlanza isikhathi, okanye e-ISO Class 7, okusho ukuthi akukho zinkulu kunezinkulu zezinto ezingaphansi kwe-0.5 microns ngumetro wokubili weyayizilwane, okuyi-352,000. Lokhu kuseta umkhakha wokugcina okuphezulu kwezinhlobo zezinto zokuhlanza isikhathi kumaziko. Okwesibili kukuvumela kokuhlanza isikhathi okuphambili. Isikhathi kufanele sikhule kuzindawo ezingaphansi kokuchitha, njengokwesikhathi sokubeka amasimba (reagent preparation spaces), kuze kuzindawo ezingaphakeme kokuchitha njengokwesikhathi sokuchaza i-PCR (post-PCR analysis). Lokhu kuhlupha ukuthi isikhathi sikhule ngendlela eyodwa futhi kungakhulise izinto ezingaphansi zokuchitha kumaziko. Okwesithathu kukusebenzisa izifiltara ze-HEPA, okuyisibonelo esibalasekile ekubhaleni izinto ezingaphezulu kwe-99.97% ezingaphansi kwe-0.3 microns, futhi kuzoba nezinye izinyama ezingaphansi zokubhala izi-DNA/iz-RNA noma izinkuku zokuchitha. Lezi zifiltara zihlupha izinto ezingachitha kabusha phambi kokuthi isikhathi sikhule ngaphandle kumaziko noma sikhule kabusha kumaziko. Uma lezi zinto zonke zisebenza ngendlela efanele, zidala isisitemu sokugcina esihle esifanana nezindlela ze-ISO 14644 futhi nezindlela ze-CDC okuphatha kahle kumaziko okuchaza izinto ngendlela yezimfundo yezibalo (molecular diagnostic facilities).

Ukwahlukaniswa Kwemisebenzi Yezikhathi Ezintathu Ne-Strategy Yokubeka Iphresha

Imisebenzi Yezikhathi: Ukubhala Amasimbi, Ukuphakamisa, Nokuchaza Okungaphambili Kokuphakamisa

Ukuze kubhekwe ngokuphelele, izilabho zezibalo zokuqondisa (PCR) kufuneka zibe nezindawo ezithathu ezingaqondi kahle, ngakho-ke lezi zibalo zezibalo zizobhala phakathi. Okokuqala kukuzinda kokwenza amareagent, okufuneka kube nzima kakhulu ngoba lapho abantu bakhuthaza amamaster mix bese bakhwela amasampuli emva kwezikhumba zokuvula (laminar flow hoods). Okwesibili kukuzinda kokuphakanyiswa ngezitha zokuphakanyiswa (thermal cyclers) zihlala lapho. Akukho ukudlala ngezitshini eziphansi, futhi kuncane ukungena kwezinye zokuphakanyiswa. Ezindaweni zokugcina, lapho abantu baphatha izinto zokuphakanyiswa kusukela ekugcineni kwemithambo (gel electrophoresis) noma ukulungisa kusukela kusuka kumthambo wokufunda (sequencing)? Lapho kukhona inkambu enkulu yokuqondisa ngokungafanele. Kufuneka kubekwe kabusha kusukela kwezinye zindawo zokusebenza phambi. Izilabho zihlanganisa izinkampani zokuhlukanisa phakathi kwezindawo, zibeka izinkampani zokusebenza zokuphakathi kwezindawo zonke, futhi zibeka izinhlobo zokuhamba kusukela ekusukelweni kuwo wonke umsebenzi wabantu. Izingxenye zezilabho zingaba zihlanganisa izinkampani zokuvula (airlocks) noma izikhumba zokugcina (pass-through chambers) ukuze zibekwe kusukela kwezindawo ezihlukene zomsebenzi.

Ukubhekisa Kwemilingo Yokuqondisa: Ukugcina Imilingo Yokuqondisa Okungafani Nokungasemthwakathini Kuzona Zonke Iizone

Isiqondiso sesistimu yesifanayo sesifanayo sisebenzisa ukuthi umoya uhambe kusendaweni esifanele ngemikhumbuzo yelaboratori: kusukela kubunqula bokuphatha amasimbi, emva kwalokho kuhamba kuphakathi kwemikhumbuzo yokuphakamisa, futhi ekugcineni kufika kumakhaya okuphambili kwe-PCR. Kumaqondiso okuphatha amasimbi, siyabahlinza ngokwesibonelo kusukela ku-+10 ku-+15 Pascals kungaphandle kokwesibonelo kumaqondiso okuphambili, ukuze izinto zangaphandle azifikelela phakathi. Amakhaya okuphakamisa ayisahlukene ngokwesibonelo noma kuncane kakhulu kusukela ku-0, njengoba yilokhu isibonelo sokuphambili phakathi kwezinye izindawo. Uma sifika kulezi zindawo zokuphambili kwe-PCR, isifanayo siphula phezulu kwe-zero, ngokwesibonelo kusukela ku-10 ku-15 Pascals. Lokhu kusiza ekuthinteni izinkomo zezinto ezingaqondiwa futhi kuzithumela ngqo kumaqondiso okuphambili okuqukethwe ngokuphathelene ne-HEPA. Kufanele sibhekisele kulezi zifanayo ngokuphambili. Abaqondi abaningi bakhuluma ukuthi izinguquko ezincane zingaba zingcono kakhulu lapha; uma isifanayo sishintsha ngokuphambili ngokulinganayo kwe-5 Pascals kulezi zindawo eziphambili, izinkinga zokuthinteka zihamba ngokulinganayo kwe-30%. Funa ukubheka futhi ukuthi kuzimele ngokuphambili kwezinye izinto. Umoya owenziwa kumaqondiso okuphambili kwe-PCR kufanele uhambe kuphakathi kwezinqumo zokuphambili zokugcina zokuphathelene ne-HEPA kuqala. Lezi zinqumo zizokwenzela konke okubigaba kune-0.3 microns, zibhala ngokulinganayo kwe-99.97% yezinto zonke ozikhipha ngokuphambili ngokwesibonelo.

Izinqambu Zokusebenza Zokuphatha Isikhangeli Sokuhlanzwa Kwezindawo Zokuziphatha Kwizilabho Zokuziphatha

Izivinini Zokuhlanzwa Kwesikhathi: Kungani 12–15 ACH Yisifunda Esincane Sokufundwa Kwizilabho Zokuziphatha

Kwizilabho zokuziphatha, sikhuluma ngokujwayelekile ngama-12 kuze ngama-15 amasikhathi okuhlanzwa kwesikhathi esingakade ukususa lezi zinto ezingamnye ezihlukanayo ezihlanzwa emva kokuziphatha. Lezi zinto ezingamnye zingathinta izinyango uma akukho kakhulu kwezivinini zokuhlanzwa, okubangela izinkinga njengeziqulelo ezinkulu ezibonakalayo. Izifundo zazibonisa ukuthi lapho izilabho zihlala phansi kwezinombolo zanoma, ubuchwepheshe bungaba buningi kangaka—ngokuvamile ngamashumi amathathu okunye noma kungenzeka kahle. Lapho sisebenzisa izilabho zokuziphatha zezinhlobo ezingamnye eziningi kakhulu njenge-Mycobacterium tuberculosis, i-CDC isho ukuthi kufanele kube kahle kakhulu—ngokuvamile kuze kube kuma-20 amasikhathi okuhlanzwa ngosikhathi. Iziphakamiso zezilabho ezintsha zihlanganisa lezi zinhlobo zezivinini zokuhlanzwa zezinyango ezijabula ukuzibona konke ngokuphathelene ngezinsuku zonke. Lokhu kusiza abasebenzi ukuba babe ngaphandle kwezifunda ze-ISO 14644-1 zokusebenza kwezilabho zokuhlakanipha, okuyisifunda sokufundwa ngokuvamile yonke ilabho enomthembiso wokusebenza ngokuphelele.

izisikhangeli Zokuhlanza Kwangaphandle Ngokuphelele Nezinkampani Zokuhlanza: Ukukhulula Izinkinga Zokubuyiselwa Kwemithombo Yomkhakha Wokuhlanza Kwizindawo Zokuziphatha Kwe-PCR

Emazinkundleni we-PCR, isistimu se-HVAC kufanele isebenze ngokuphelele ngohawa oshisise, noma yikuphi okunye okungakwazi ukubuyiselwa. Uma uhawa lubuyiselwa, lubelela amamplicon angasebenziswe kusukela emhlabathini eyodwa, okuyinto engaqondi kakhulu nokuthi sifanele sibonelela njani umgomo wokuphatha umlando wehawa kulezi zindawo eziphakeme. Umsebenzi wokuvula kusha kusobala ngokwesikhathi kusobala ngamafiltara ayo a-MERV-14 okwesibini, emva koko kuhamba ku-amafiltara a-HEPA angavumela i-ISO 45-D noma i-IEST-RP-CC001. Lezi zifiltara kufanele zilindele izinye zezinto ezinkulu zokugcina ezinkulu kune-99.99% zezinto ezinkulu kune-0.3 microns. Amazinkundla angalapho akhombisa le sizinda sokuziphatha kubona ukuphela kwemiphumela yokugcina kwehawa ngokuphakeme kwe-87% uma kulinganiswa nezinye zisistimu esizigcina uhawa oludala nolusha. Ngeminyaka apho izinkampani zisobenza ngokuphelele, kufanele kubekho ukuphela kwezifiltara ezinkulu kune-30% ngokuphakeme. Funa ukubona, amafiltara asiyi kufanele abuyiselwe kuphela uma bapheka ukuphela kwe-pressure drop. Kufanele abuyiselwe ngokuphakeme ngokuzimela ngokuzimela ngokuzimela ngokuzimela ngokuzimela.

Ukuzimela, Ukuvavanya, nokudokumenta kwezinhlangano zezinye zezindawo zokuphatha izinkampani zemithombo yezibonelo

Izinhlelo ze-PCR lab HVAC zidinga ngokuphelele ukuhlangabezana nezindinganiso ezivela ku-ISO 14644, imithetho ye-CDC yokuphepha kwezinto eziphilayo, kanye nezidingo ze-CLIA. Inqubo yokuqinisekisa idlula ezigabeni ezintathu eziyinhloko. Okokuqala, i-Installation Qualification (IQ), eqinisekisa ukuthi konke kufakwe kahle nokuthi yonke imibhalo ilungile. Khona-ke kukhona ukufaneleka kokusebenza (OQ) lapho sihlola khona ukuthi uhlelo lusebenza kahle kangakanani ngaphansi kwezimo ezahlukene njengamazinga okuhamba komoya, izilungiselelo zengcindezi, namazinga okushisa. Ekugcineni, i-Performance Qualification (PQ) ibheka ukusebenza kwangempela ngesikhathi sokusebenza kwangempela, ilinganisa izinto ezinjengokubala kwezinhlayiya, umehluko wengcindezi, nokuthi umoya ushintshwa kangaki ngehora lapho kusetshenziswa izinqubo ezijwayelekile zaselebhu. Zonke lezi zivivinyo zidinga imibhalo eningiliziwe. Silandelela amabalazwe esivinini somoya, sibale izinhlayiya ezisemkhathini, sigcine amarekhodi okushintsha kwengcindezi phakathi kwamakamelo, futhi sibhale lapho kushintshwa izihlungi. Le mibhalo idala umkhondo wokuhlola odingekayo ukuze uthole isitifiketi. Ngokuvamile ama-lab enza ukuvuselelwa njalo ezinyangeni eziyisithupha kuya kwezingu-12. Lokhu kuhilela ukuhlola kabusha ukubalwa kwezinhlayiya ngezinsimbi ezilinganisiwe ukuze kuqinisekiswe ukuthi zihlala ngaphansi kwezinhlayiya ezingu-3 520 ezinobukhulu obungu-0,5 microns noma ngaphezulu kumitha eliyisikubhu, okuhlangabezana namazinga e-ISO Class 5. Ukwehluleka ukugcina amarekhodi afanele ngokushintsha komoya ngehora, ukuqina kwengcindezi yasendlini, noma ukushintshwa kwamafilimu njalo kungaholela ezinkingeni ezinkulu. I-FDA iye yajezisa ama-laboratories ngemali engaphezu kwengxenye yesigidi samaRandi ngenxa yemikhuba emibi yokubhala. Ngakho ukuphathwa okuhle kwe-HVAC akuyona nje into enhle kakhulu ukuba nayo kubalulekile ukuqinisekisa ukuthi imiphumela yethu yokuxilonga inembile futhi inokwethenjelwa.

Isikhombisi Sokuqala

Umgubho wokusebenza kwe-HVAC kwi-PCR labs yini?

Izinhlayo zokusebenza kwe-HVAC kwi-PCR labs ziyizinga elikhulu ekuvikeleni kwamafutha. Zenza ukuthi kufakelwe amafutha ngendlela efanele nokuphatha kwamafutha, okukhomba ukungavikeli kwezinye iziphumo zezilinganiso ezidlule futhi ukuthi kubhekwe iziphumo eziphelele.

Kungani ukuphatha kwamafutha ngendlela eyodwa kwi-PCR laboratories?

Ukuphatha kwamafutha ngendlela eyodwa kukhombisa ukungabikho kwezinkinga zokuphatha kwezinto ezivikela emaphakathini. Kuzinikeza ukuthi amafutha aphathe kusuka emazinkundleni angaphansi kuze kumazinkundleni angaphezulu, okunciphisa izindlela zokuthi izinto zokuvikela zizophelele kuziphumo zezilinganiso.

Izimali zokuvikela kwezindawo eziphelele kwi-PCR labs zini?

I-PCR labs ziqondana nezimali zokuvikela kwe-ISO, okunjalo kuyizimali zase-ISO Class 7, okuzoba kunciphisa inombolo yezinto ezizodwa ngaphezu kwe-0.5 microns ngalilitha lezifutha.

Ukuguqula kwezimboni zokugcina kufaka kuthi kanjani kuhambisa kwamafutha kwi-PCR laboratories?

Ukuguqula kwezimboni zokugcina kufaka kuthi kuhambisa kwamafutha phakathi kwezindawo zolaboratori, ukuchaza izimboni ezihlukene kusuka kwezimboni ezincane kuma-zimboni eziningi ukuze kuvikelwe izinto zokuvikela.