I-PULSE oximetry ithiyori inokubala i-arterial hemoglobin oxygen saturation ukusuka kumlinganiselo we-pulsatile ukuya kukukhanya okubomvu okugqithisiweyo okupheleleyo okwahlulwe ngomlinganiselo ofanayo wokukhanya kwe-infrared transilluminating umnwe, indlebe, okanye ezinye iithishu.I-saturation efunyenweyo kufuneka izimele kwi-pigmentation yesikhumba, kunye nezinye izinto ezininzi, ezifana nokugxininiswa kwe-hemoglobin, i-nail polish, ukungcola kunye ne-jaundice.Izifundo ezininzi ezilawulwayo ezinkulu ezithelekisa izigulane ezimnyama nezimhlophe (izifundo ze-380) i-1,2 ibike ukuba akukho ziphoso ezibalulekileyo ezinxulumene ne-pigment kwi-pulse oximeters kwi-saturation eqhelekileyo.
Nangona kunjalo, uSeveringhaus kunye noKelleher3 bahlaziywa idatha evela kubaphandi abaninzi abaye babika iimpazamo ze-anecdotal (+ 3 ukuya + 5%) kwizigulane ezimnyama.4-7 Iimodeli zemizekelo yeempazamo ngenxa yemibala eyahlukeneyo yahlaziywa nguRalston.okqhubekayo.8 Coteokqhubekayo.I-9 ibike ukuba i-nail polish kunye ne-inki kwi-skin surface ingabangela iimpazamo, ukufunyaniswa kuqinisekiswe ngokungaqhelekanga ngabanye kwi-inki yeminwe, i-henna eyi-10, i-11 kunye ne-meconium.okqhubekayo.I-14 ifumene i-overestimation ye-saturation, ngakumbi kwi-saturation ephantsi kwizigulana ezinemibala (i-Indiya, i-Malayvs.IsiTshayina).I-Technology Subcommittee yeQela eliSebenzayo kwi-Critical Care, i-Ontario Ministry of Health, i-15 ibike iimpazamo ezingamkelekanga kwi-pulse oximetry kwi-saturation ephantsi kwizifundo ze-pigmented.I-Zeballos kunye ne-Weisman16 ithelekisa ukuchaneka kwe-Hewlett-Packard (i-Sunnyvale, CA) i-ear oximeter kunye ne-Biox II pulse oximeter (i-Ohmeda, i-Andover, i-MA) kwi-33 yamadoda amnyama amnyama asebenzisa kwiindawo ezintathu ezahlukeneyo zokulinganisa.Ekuphakameni kwe-4,000 m, apho i-oxygen saturation (i-Sao2) isuka kwi-75 ukuya kwi-84%, i-Hewlett-Packard iyancipha i-Sao2by 4.8 ± 1.6%, kanti i-Biox igqithise i-Sao2by 9.8 ± 1.8% (n = 22).Kwaxelwa ukuba ezi mpazamo, ebezichazwe ngaphambili kwabamhlophe, zombini zibaxiwe kwabantsundu.
Ngethuba leminyaka yethu emininzi yokuvavanya ukuchaneka kwe-pulse oximeter kwi-oxygen saturations ephantsi ukuya kuma-50%, ngamanye amaxesha siye saqaphela i-bias ephezulu engaqhelekanga, ngakumbi kumanqanaba aphantsi kakhulu, kwezinye kodwa kungekhona kwezinye izifundo ezinzulu.Olu phando ke ngoko lwaluyilelwe ngokukodwa ukufumanisa ukuba ngaba iimpazamo kwi-Sao2correlate ephantsi nombala wolusu.
Zonke ii-oximeters ze-pulse ezithengiswa e-United States zifunwa yi-US Food and Drug Administration ukuba zivavanywe kwaye ziqinisekiswe njengezichanekileyo ngaphantsi kwe-± 3% ingcambu ithetha impazamo yesikwere kwi-Sao2values phakathi kwe-70 kunye ne-100%.Uninzi lweemvavanyo zokulinganisa kunye nokuqinisekisa zenziwe kwizifundo zamavolontiya ezinombala okhanyayo wolusu.
ULawulo lokuTya kunye neDrugs kutshanje lucebise ukuba izifundo zokuchaneka kwe-pulse oximeter ezingeniswe kwi-Food and Drug Administration imvume yesixhobo zibandakanya izifundo ezinoluhlu lwe-pigmentation yesikhumba, nangona kungekho mfuneko yobungakanani obusasazwayo.Siyazi akukho datha ixhasa esi senzo.
Ukuba kukho i-bias ebonakalayo ebonakalayo kunye ne-reproducible kwi-saturation ephantsi kwizifundo ezimnyama, ukufakwa kwezifundo ezinombala omnyama kuya kwandisa iqela lovavanyo lithetha iimpazamo zesikwere, mhlawumbi ngokwaneleyo ukuba kubangele ukugatywa yi-Food and Drug Administration.Ukuba i-bias reproducible ifunyenwe kwi-saturation ephantsi kwizifundo ezimnyama kuzo zonke i-pulse oximeters, iilebhile zesilumkiso kufuneka zinikezelwe kubasebenzisi, mhlawumbi kunye nezinto ezicetyiswayo zokulungiswa.
Ixesha lokuposa: Jan-07-2019