Isihloko
Ingabe i-methylene blue ingathinta ama-pulse oximeter nokuhlolwa kwaselabhorethri?
Yebo. I-methylene blue ingaphazamisa ama-pulse oximeter, imicu yokuhlola umchamo namanye amadivayisi okuhlaziya aselabhorethri. Umphumela uncike endleleni yokulinganisa, ekugxileni kukadayi nasesikhathini. Lokhu akusho ukuthi yonke imiphumela engajwayelekile ngemva kokuchayeka ayilona iqiniso.
Isilinganiso esiphansi somoya-mpilo sisadinga ukunakwa. Funa usizo lwezimo eziphuthumayo uma unokuphelelwa umoya kakhulu, ubuhlungu besifuba, ukudideka, ukuquleka noma izindebe eziluhlaza okwesibhakabhaka ngokumpunga. Xhumana nochwepheshe wezempilo ngokushesha uma isilinganiso siphansi ngokungalindelekile noma siqhubeka nokwehla, ngisho noma uzizwa uphilile. Iseluleko se-FDA ngama-pulse oximeter sigcizelela ukuthi izimpawu nezilinganiso kufanele kubhekwe ndawonye, nokuthi umoya-mpilo ophansi ungaba khona ngaphandle kwezimpawu ezisobala. Tshela ithimba elikwelaphayo ngokuchayeka ku-methylene blue; ungalindi ukuthi udayi uphele emzimbeni ngaphambi kokufuna usizo.
Indlela udayi oshintsha ngayo isilinganiso
Ukuhlola okusebenzisa ukukhanya kuthola ukukhanya, bese kuguqula leyo nkomba ibe umphumela ophathelene nomzimba. Uma enye into emunca ukukhanya ingena kusampula, lokho kuguqulwa kungase kungabe kusanemba. Ithuluzi lingase libike inani elicheme, libonise iphutha noma lehluleke ukubala umphumela.
Ekulinganiseni nge-pulse oximeter, i-SpO₂ ebikiwe ilinganisela ukugcwala kwe-hemoglobin ngomoya-mpilo ngokusebenzisa ukukhanya okudlula ezicutshini. Ucwaningo lukaGorman noShnider ngokumuncwa kokukhanya yi-hemoglobin nangudayi lwabonisa ukuthi i-methylene blue imunca ukukhanya okwanele ku-660 nm ukuze kubonakale sengathi ukugcwala ngomoya-mpilo kwehlile. Lokhu kuchaza isilinganiso esiphansi esingelona iqiniso ngemva kokufakwa emthanjeni: ukumuncwa kokukhanya okwengeziwe kungathathwa ngephutha njengoshintsho emoyeni-mpilo oboshwe ku-hemoglobin.
Umucu wokuhlola umchamo unenkinga ehlukile. Izingxenye zawo ezinamakhemikhali okuhlola zakha imibala ehunyushwa ngumuntu noma idivayisi yokuhlaziya. Umchamo onombala ogqamile ungafihla noma ushintshe leyo nkomba ebonakalayo. Ayikho kulezi zindlela zokuphazamisa edinga ukuthi into yomzimba elinganiswayo ibe isishintshile. Ngakolunye uhlangothi, ayikho kuzo evimbela ukuba kube nokugula kwangempela ngesikhathi esifanayo.
Ithebula eliyinkomba yokuphazamiseka kokuhlolwa
Ithebula lehlukanisa izixwayiso eziselebula, umbiko wesiguli nokuhlolwa okungeze udayi ngokuqondile kumasampula. Amazinga okugxila asho udayi okusampula ehloliwe, hhayi umthamo okufanele uthathwe noma izinga elisegazini elibikezelwa ngokulebula kwebhodlela.
| Ukuhlolwa noma ithuluzi | Ukuchayeka okubhalwe phansi nokutholakele | Indlela yokuphazamisa nomkhawulo oqondene nomthombo |
|---|---|---|
| I-pulse oximeter | I-PROVAYBLUE efakwa emthanjeni ingaveza isilinganiso esiphansi esingelona iqiniso sokugcwala ngomoya-mpilo ngesikhathi sokufakwa noma ngokushesha ngemva kwakho. | Ukuphazamiseka kokulinganisa okusebenzisa ukukhanya. Ulwazi lokunquma umuthi luncoma ukuhlola isampula yegazi lomthambo othwala igazi lisuka enhliziyweni ngenye indlela; alunikezi isici sokulungisa esisebenza kuzo zonke izimo. |
| Umucu wokuhlola umchamo osebenzisa inkomba eluhlaza okwesibhakabhaka, kuhlanganise ne-leukocyte esterase | Ilebula lomkhiqizo ofakwa emthanjeni lixwayisa ukuthi udayi okhishwa ngomchamo ungaphazamisa ukuhunyushwa kwemiphumela. | Ukuphazamiseka okubangelwa umbala; alukho uhlobo lomkhiqizo, indlela iphutha elichema ngayo noma izinga lomngcele wokugxila okushiwo. Lesi sixwayiso asiqinisekisi ukutheleleka futhi asikuphiki. |
| I-albumin elinganiswa ngomucu uma iqhathaniswa namaprotheni omchamo alinganiswa nge-turbidimetry | Umbiko wesiguli wango-2018 wathola i-albumin engu-3+ (300 mg/dL) ngomucu, kodwa amaprotheni omchamo angu-18 mg/dL nge-turbidimetry, ngemva kokusetshenziswa komuthi ohlanganisa i-methenamine ne-methylthioninium. | Umchamo oluhlaza okwesibhakabhaka ngokuluhlaza okotshani kakhulu wathinta ingxenye yomucu ehlola i-albumin. Yisigameko esisodwa; isifinyezo asisho idivayisi yokuhlaziya noma indlela umuthi owasetshenziswa ngayo. Lokhu akuqinisekisi ukufaneleka kwazo zonke ezinye izindlela zokuhlola amaprotheni. |
| Ukuhlolwa komchamo nge-Roche cobas u601 | Ocwaningweni lwango-2025 lokwengeza udayi kumasampula, i-methylene blue emchameni ku-≥5 mg/L yathinta iningi lezinkomba ezikalwayo. | Ukuphazamiseka kokulinganisa okususelwa embala; umphumela wokuhlola ngaphandle komzimba oqondene nale divayisi, hhayi yonke imicu noma zonke izindlela iziguli ezichayeka ngazo. |
| I-co-oximetry nge-Werfen GEM Premier 4000 | Kulolo cwaningo, igazi lomthambo obuyisela igazi enhliziyweni elivela kubanikeli abaphilile, okwengezwe kulo udayi kwaze kwaba ngu-≥50–70 mg/L, laveza imiphumela engakwazanga ukubalwa. | Ukwehluleka kokulinganisa okusebenzisa ukukhanya emazingeni okugxila ahloliwe; akubona ubufakazi bokuthi ukwelashwa okuvamile kuhlala kwenza i-co-oximetry ingasebenzi. |
| Izinkomba ze-Roche cobas c502 nokuhlolwa kwama-amphetamine emchameni nge-c702 | Ukwengeza udayi kwachemisa inkomba ye-hemolysis iye phansi ngaphezu kuka-0.1 mg/L, inkomba ye-lipemia iye phezulu ngaphezu kuka-0.01 mg/L, nokuhlolwa kwama-amphetamine kuye phezulu ngaphezu kuka-0.08 mg/L. | Ukuphazamiseka kokulinganisa okusebenzisa ukukhanya okuqondene nendlela ethile. Inkomba ayikona ukuxilongwa kwesifo; inkomba yokuqala yokuhlola echemele ohlangothini oluthile ayiqinisekisi ukuchayeka esidakamizweni. |
Ababhali bango-2025 babheka ukuphazamiseka abakubonile ekuhlolweni okungekhona okomchamo njengokungenamathuba amaningi okuba yinkinga ekunakekelweni kweziguli endaweni yabo. Bafaka amazwana ngombala womchamo ukuze baxwayise ngokuhlolwa komchamo okungenzeka kuthinteke. Ukuhlola kwabo akufanele kuguqulwe kube isimangalo esisebenza kuzo zonke izimo sokuthi ukuhlolwa kwegazi akuthinteki noma ukuhlolwa komchamo akunakusetshenziswa.
Izilinganiso zomoya-mpilo ziphendula imibuzo ehlukene
Isampula yegazi lomthambo othwala igazi lisuka enhliziyweni ilusizo kuphela uma ithimba lazi ukuthi yisiphi isilinganiso esenziwayo. I-co-oximetry isebenzisa ubude bamaza bokukhanya obuhlukahlukene ukuze yehlukanise izinhlobo ze-hemoglobin, kuhlanganise ne-methemoglobin. Ihlukile kunesinzwa esivamile esifakwa emunweni esisebenzisa ubude bamaza obubili. Ukugcwala ngomoya-mpilo okubaliwe kanye nengxenye ethile ye-hemoglobin elinganiswa ngokuqondile nakho kuyimiphumela ehlukene. Ukuhlola kwaselabhorethri kwezigameko ezimbili ze-methemoglobinemia kuchaza ukuthi ukugcwala ngomoya-mpilo okubalwa ngezilinganiso zamagesi egazi kusekelwe ekucabangeni ukuthi i-hemoglobin isebenza ngendlela evamile. Ukubala okunjalo kungadukisa uma kunezinhlobo ze-hemoglobin ezingajwayelekile.
Uphenyo lwezokwelapha ngemiphumela engahambisani yama-co-oximeter lubonisa ukuthi kungani lokhu kubalulekile. Ukuphazamiseka kwalo kwakubangelwa yi-sulfhemoglobin, hhayi i-methylene blue. Amathuluzi ahlukene akhipha amanani angahambisani, kuyilapho isiguli sasiphinde sibe nokungajwayelekile kwangempela egazini. Abaphenyi baqhathanisa izindlela nokutholakele ekuhlolweni kwesiguli kunokuba bamemezele ukuthi isiguli noma yonke imiphumela yaselabhorethri “ijwayelekile.” Leso simiso sokuxilonga siyasebenza nalapho udayi ofakiwe kusolwa ukuthi yiwona ophazamisayo.
I-methemoglobinemia iwukuphazamiseka kwangempela kokuthuthwa komoya-mpilo, hhayi nje umbala wegazi ongajwayelekile. Esigulini esithola ukwelashwa, okubonakala njengokwehla kwesimo kumonitha kungase kubonise ukuphazamiseka okudalwe ngudayi, isifo esisaqhubeka noma enye inkinga. Ithimba elikwelaphayo kufanele lehlukanise la mathuba. Ilebula le-methylene blue liphinde lichaze i-hemolytic anemia yangempela kanye nokuthi i-methemoglobinemia ingase ibuye. Lezo zinguquko emzimbeni akufanele zishaywe indiva njengokungathi zingamaphutha okubangelwa umbala.
Ingabe ukusetshenziswa ngomlomo kubangela inkinga efanayo?
Isixwayiso esinamandla kunazo zonke nge-pulse oximeter esicashunwe lapha siphathelene nokufakwa emthanjeni. Asinikezi uhlelo lwesikhathi noma iphutha elilindelekile ekulinganiseni ukugcwala ngomoya-mpilo lapho abathengi beyisebenzisa ngomlomo. Ukuchayeka ngomlomo kusengabaluleka ekuhlolweni komchamo: isigameko esishicilelwe esihilela i-Prosed DS ethathwa ngomlomo, umuthi oyinhlanganisela equkethe i-methylene blue, sabhala ngomchamo oluhlaza okwesibhakabhaka ngokuluhlaza okotshani futhi sachaza ukuthi ukushintsha kombala kwenza kanjani kube nzima ukusebenzisa imicu esekelwe embala.
Indlela yokufaka ibalulekile ngoba ithinta ukuthi udayi ufinyelela kanjani futhi nini egazini nasemchameni. Ngakho-ke, imikhiqizo yomjovo esetshenziswa ekwelapheni kufanele yehlukaniswe nemikhiqizo ethathwa ngomlomo lapho kuchazwa ukuchayeka. Ukuthi “Ngisebenzise i-methylene blue” akusizi njengokusho igama lomkhiqizo, izinga lokugxila, inani, indlela yokuyisebenzisa nesikhathi.
Kule mithombo asikho isikhathi esisodwa sokulinda esisekelwe ebufakazini esenza konke ukuhlolwa kuphinde kuthembeke. Izinga lomngcele wokugxila kusampula alinakuliguqulwa libe amahora asedlule kusukela ekusetshenzisweni ngaphandle kolwazi olwengeziwe. Ukushintsha okubonakalayo kombala womchamo nakho akunakuqinisekisa ukuthi ukuhlolwa okuthile kuthembekile yini.
Okufanele ukutshele udokotela noma ilabhorethri
Ngaphambi kokuhlolwa okuhleliwe, nikeza udokotela ocela ukuhlolwa noma ilabhorethri ulwazi olulandelayo:
- Umkhiqizo uqobo noma isithombe selebula lawo, kuhlanganise nezinye izithako.
- Inani elisetshenzisiwe, izinga lokugxila, indlela yokulisebenzisa nesikhathi sokuchayeka kwakamuva kakhulu.
- Noma yiziphi izimpawu onazo manje nesizathu sokuhlolwa.
- Noma yimuphi umphumela ongalindelekile, kuhlanganise negama ledivayisi nesikhathi sokulinganisa uma kutholakala.
Ungayeki ukwelashwa okunqunyiwe noma uhlehlise ukuhlolwa okuphuthumayo ukuze isampula ibukeke ijwayelekile. Ithimba lezokwelapha linganquma ukuthi lifake yini amazwana ahumusha umphumela, lisebenzise enye indlela eqinisekisiwe noma liphinde isilinganiso lapho kufanele khona. Ukuphinda ngokushesha yona le ndlela ethintekile kungase kumane kuphinde iphutha layo.
Kubacwaningi, umbuzo ohambisana nalokhu uthi ingabe udayi ushintshe okwenzeka emzimbeni noma ushintshe kuphela inkomba yokuhlolwa. Lokho kudinga izilawuli zokuphazamiseka kwe-methylene blue ekuhloleni kocwaningo. Ezigulini, usizo olusebenzayo ukunikeza ulwazi olunembile ngokuchayeka, ukuze ilabhorethri iphenye isilinganiso esifanele kunokuba iqagele ngombala kuphela.