I-PULSE oximetry ngokwethiyori ingabala ukugcwaliswa komoyampilo kwe-arterial hemoglobin ukusuka kusilinganiso se-pulsatile kuya kwengqikithi yokukhanya okubomvu okudlulisiwe kuhlukaniswe ngesilinganiso esifanayo sokukhanya kwe-infrared transilluminating umunwe, indlebe, noma esinye izicubu.I-saturation etholiwe kufanele izimele ku-pigmentation yesikhumba, nezinye izinto eziningi eziguquguqukayo, njengokugxilisa i-hemoglobin, i-nail polish, ukungcola, ne-jaundice.Izifundo eziningana ezinkulu ezilawulwayo eziqhathanisa iziguli ezimnyama nezimhlophe (izifundo ezingama-380) eziyi-1,2 azibikanga amaphutha abalulekile ahlobene ne-pigment kuma-pulse oximeters ekugcwaleni okuvamile.
Kodwa-ke, u-Severinghaus no-Kelleher3 babuyekeze idatha evela kubaphenyi abaningana abaye babika amaphutha e-anecdotal (+3 kuya ku-5%) ezigulini ezimnyama.4-7 Imodeli yokufanisa yamaphutha ngenxa yemibala ehlukahlukene yabuyekezwa nguRalston.et al.8 Coteet al.I-9 ibike ukuthi upende wezinzipho noyinki endaweni yesikhumba kungabangela amaphutha, okutholakele kuqinisekiswe ngokungananazi ngabanye ngoyinki wezigxivizo zeminwe, i-henna engu-10, i-11 ne-meconium.12 Odayi abajovwe ngomjovo babangela amaphutha esikhashana.13 U-Leeet al.I-14 ithole ukulinganisa ngokweqile kokugcwala, ikakhulukazi ekugcwaleni okuphansi kweziguli ezinombala (amaNdiya, isiMalayvs.IsiShayina).I-Technology Subcommittee yeQembu Elisebenzayo Lokunakekelwa Okubalulekile, Umnyango Wezempilo wase-Ontario, i-15 ibike amaphutha angamukeleki ku-pulse oximetry ekugcwaleni okuphansi ezifundweni ezinemibala.U-Zeballos no-Weisman16 baqhathanise ukunemba kwe-Hewlett-Packard (Sunnyvale, CA) i-ear oximeter kanye ne-Biox II pulse oximeter (Ohmeda, Andover, MA) ezinsizwa ezimnyama ezingama-33 ezijima ezindaweni ezintathu ezihlukene ezilingisiwe.Ekuphakameni okungu-4,000 m, lapho ukugcwala komoyampilo ku-arterial (Sao2) kusuka ku-75 kuya ku-84%, i-Hewlett-Packard ilinganisele kancane i-Sao2by 4.8 ± 1.6%, kuyilapho i-Biox ilinganisela ngokweqile i-Sao2by 9.8 ± 1.8% (n = 22).Kuthiwa la maphutha, abikwe kwabamhlophe phambilini, womabili anehaba kwabamnyama.
Phakathi neminyaka yethu eminingi yokuhlola ukunemba kwe-oximeter ye-pulse oximeter ekugcwalisweni komoyampilo okungaphansi kuka-50%, siye saqaphela ukuchema okuphezulu ngokungavamile, ikakhulukazi emazingeni okugcwala aphansi kakhulu, kwezinye kodwa hhayi kwezinye izifundo ezinemibala ejulile.Ngakho-ke lolu phenyo lwaluklanyelwe ngokukhethekile ukunquma ukuthi ingabe amaphutha e-Sao2correlate ephansi nombala wesikhumba.
Wonke ama-pulse oximeters adayiswa e-United States adingwa yi-US Food and Drug Administration ukuthi ahlolwe futhi aqinisekiswe njenganembe ngaphansi kuka-±3% wempande yephutha eliyisikwele ku-Sao2values phakathi kuka-70 no-100%.Iningi lokuhlolwa kokulinganisa nokuqinisekisa kwenziwe ezifundweni zamavolontiya ezinombala okhanyayo wesikhumba.
I-Food and Drug Administration isanda kuphakamisa ukuthi izifundo zokunemba kwe-pulse oximeter ezihanjiswe ukuze kugunyazwe idivayisi ye-Food and Drug Administration zihlanganisa izifundo ezinohlu lwemibala yesikhumba, nakuba kungekho mfuneko yobuningi esabalalisiwe.Siyazi ukuthi ayikho idatha esekela lesi senzo.
Uma kukhona ukuchema okubalulekile nokuphindaphindekayo okuhle ekugcwaleni okuncane ezifundweni ezinesikhumba esimnyama, ukufakwa kwezifundo ezinesikhumba esimnyama kuzokhuphula iqembu lokuhlola kusho impande yamaphutha ayisikwele, mhlawumbe okwanele ukubangela ukwenqatshwa yi-Food and Drug Administration.Uma ukuchema okungakhiqizeka kutholakala ekugcwaleni okuphansi ezifundweni ezinesikhumba esinsundu kuwo wonke ama-pulse oximeters, amalebula ayisixwayiso kufanele anikezwe abasebenzisi, mhlawumbe nezici zokulungisa eziphakanyisiwe.
Isikhathi sokuthumela: Jan-07-2019