Te kikorangi metilīni mō te mahere repe waitinana kaitiaki: ngā waikano, ngā pūtohu, me te tika

Ka pā mai tētahi pātai whāiti ki te mātanga pokanga e rongoā ana i te mate pukupuku ū i tōna wā tōmua: kua tae rānei te puku mate ki ngā repe waitinana i te kēkē? Mā te tango i ngā repe katoa e whakautu taua pātai, engari ka puta pea te pupuhi nā te whakaemi waitinana me ngā raruraru ringa mauroa ki te tokomaha o ngā tūroro ka kitea kāore he mate i ō rātou repe. Mā te ariā o te repe kaitiaki e āhei ai tētahi pokanga whāiti ake. Ka tautuhia i te wā o te pokanga te repe tuatahi, te rōpū repe iti rānei, e whiwhi ana i te waitinana e rere mai ana i te takiwā o te puku mate, ka tangohia, ka tirohia. Ki te kore he puku mate i taua repe, tērā pea kāore hoki he mate i ngā repe o taua rohe, ā, ka taea te karo i te tangohanga katoa.

Nō reira, ko te tūāpapa o tēnei tikanga ko te kimi pono i taua repe. Koinei te take e whakamahia ai ngā pūtohu, ā, koinei hoki te wāhi o te kikorangi metilīni.

E rua ngā pūtohu, e rua ngā tohu ā-tinana

He pōhēhē noa te whakaaro he momo rerekē noa iho te waikano kikorangi me te pūtohu iraruke o te mea kotahi. He ariā motuhake ēnei, ā, ka puta he tohu motuhake i ia mea.

Ka werohia te waikano kikorangi, arā, te kikorangi metilīni, te kikorangi isosulfan, te kikorangi patent rānei, ki te taha o te puku mate, o te kōmatawhānui rānei. Ka haere mā ngā ara waitinana, ka whakakikorangi i te ara me te repe kia kitea ai. Ka whai te mātanga pokanga i te tae mā te karu tahanga.

Ka werohia motuhaketia te pūtohu iraruke, ko te nuinga he colloid whanariki technetium-99m. Ka haere mā taua ara rerenga anō, ā, ka tuku i ngā pūaho gamma ka kitea mā tētahi pūoko ā-ringa. Mā tēnei e kitea ai ngā repe e hōhonu ana, he iti noa te tae kikorangi, kāore rānei e kitea e te karu.

Ko te whakakotahitanga o ēnei e kīia ana ko te tikanga pūtohu takirua, ā, koinei tonu te tikanga tohutoro paerewa i ngā mahi haumanu o ēnei rā. Ka whakakapi ia tikanga i ngā ngoikoretanga o tērā atu: ka rongo te pūoko i ngā mea kāore e kitea e te karu, ā, ka whakaatu te waikano i ngā mea ka taea noa e te pūoko te tohu āwhiwhi i te wāhi. Ka whakataurite te toenga o tēnei tuhinga i te kikorangi metilīni ki ngā kōwhiringa kē i raro i taua anga.

Te kikorangi metilīni anake: he nui te tautuhi, he māharahara mō ngā hua tōraro hē

Ko te whakatau tata whakakotahi tino pakari mō te kikorangi metilīni e whakamahia ana ko ia anake, nō tētahi arotake pūnahanaha me te tātari-meta o ngā rangahau 18 mō ngā tūroro mate pukupuku ū 1,559 kāore i kitea ā-haumanu he mate i ngā repe o te kēkē. I whakakorehia ngā rangahau e whakamahi ana i ētahi atu waikano kikorangi, i ngā tikanga whakakotahi ki te iratōpū iraruke rānei, nō reira he whakatau tata tēnei mō te mahinga o te kikorangi metilīni anake.

Ko te pāpātanga tautuhi whakakotahi he 91% (95% CI 88 ki te 94%). I te reo māmā: i te āhua 9 o ia 10 tukanga i whakamātauria, i kitea tētahi repe kaitiaki, neke atu rānei. Ko ngā pāpātanga i ngā rangahau takitahi i waenga i te 75 me te 100%, ā, he nui te rerekētanga i waenga i ngā rangahau (I² āhua 68%). I whakaata tēnei i ngā rerekētanga o te kukū (ko te nuinga 1%), te rōrahi (0.1 ki te 10 mL, ko te nuinga 2, 5 mL rānei), te wāhi werohanga (huri noa i te puku mate, i raro rānei i te kōmatawhānui), ngā tikanga mātai mate, me te wheako o te mātanga pokanga.

Ko te pāpātanga tōraro hē whakakotahi he 13% (95% CI 9 ki te 18%). He pātai kē tā te pāpātanga tōraro hē e whakautu ai i tā te pāpātanga tautuhi: i roto i ngā tūroro i tino whai mate i ngā repe, he aha te hautanga i puta hē ai he hua tōraro mō te repe kaitiaki? Ka taea e tētahi tikanga te eke pai ki te ine tuatahi, engari te eke kino ki te tuarua, ā, koinei tonu te mea i puta i konei. Ko te tairongo he 87%, ko te uara matapae tōraro he 91%, ā, ko te tika whānui he 94%.

I whakatau ngā kaituhi he whakaaetia te tautuhi 91%, engari he nui rawa ngā hua tōraro hē 13% ina whakatauritea ki te paerewa pokanga i whakahuahia e rātou. I akiaki rātou kia tūpato ki te whakawhirinaki ki te kikorangi metilīni anake. Kāore i kitea i ngā whakataurite rōpū iti he rerekētanga whai tikanga ā-tatauranga i waenga i ngā horopeta 2 mL me te 5 mL, i waenga rānei i te werohanga huri noa i te puku mate me te werohanga i raro i te kōmatawhānui. Heoi, he whānui ngā awhe whakapono, nō reira kāore e taea te whakakore i te tūpono he rerekētanga tūturu. Kāore ngā taunakitanga i tohu i tētahi kukū, rōrahi, wāhi werohanga rānei hei kōwhiringa tino pai. Mō te horopaki o te pānui i ngā kupu horopeta i ngā pepa haumanu, tirohia te aratohu mō te pānui i tētahi kawa haumanu kikorangi metilīni.

Te kikorangi metilīni anake me te kikorangi metilīni me te pūtohu iraruke

I roto i tētahi whakamātautau matapōkere i tētahi pokapū kotahi mō ngā tūroro mate pukupuku ū 60 i te wā tōmua i Hyderabad, i whakaritea kia whiwhi ngā tūroro 30 i te kikorangi metilīni 5 mL anake, ā, kia whiwhi ngā tūroro 30 i taua waikano me te colloid whanariki technetium-99m kua tātarihia, 1 mCi. I muri iho, i tangohia katoatia ngā repe o te kēkē o ia tūroro hei paerewa tohutoro. I kitea tētahi repe kaitiaki, neke atu rānei, i ngā tūroro 30 katoa o ia rōpū (he tautuhi 100% i ia rōpū), ā, i tata ōrite te tau toharite o ngā repe i kitea (3.16 ki te 3.20 repe).

He āhua whakapono taua pāpātanga tautuhi tino pai, kia whakaarohia rā anō te rahi o te tauira. E 7 anake ngā tūroro i whai hua tōrunga mō te repe kaitiaki i ia rōpū, nō reira he torutoru noa ngā takahanga hei tūāpapa mō ia whakatau tata tātaritanga, ā, kāore i pūrongotia he awhe whakapono. Ko ngā tatauranga i kīia e te pepa he "tōraro hē" (8.6% ki te 4.3%) e whakamahi ana hoki i tētahi tauraro kāore i te paerewa: ka whakawehea ngā hua tōraro hē ki ngā hua whakamātautau tōraro katoa, kaua ki ngā tūroro katoa i tino whai mate i ngā repe. Nā konei ka tata ake aua tatauranga ki te kotahi tango i te uara matapae tōraro, tēnā i te pāpātanga tōraro hē tikanga noa. Ko ngā tatauranga tairongo me te motuhaketanga, te āhua nei, e aro ana ki te matapae mate anō i ngā repe ehara i te repe kaitiaki, kaua ki te kimi i te horahanga mate pukupuku ki ngā repe o te kēkē ahakoa te wāhi. Nō reira, kaua ēnei tatauranga e whakakotahitia ki ngā whakatau tata tikanga noa, pērā i te 13% o runga.

He whāiti te whakamāramatanga ka taea te tautoko mō tēnei whakamātautau: i tētahi pokapū whai wheako, i kitea e ngā tikanga e rua tētahi repe, neke atu rānei, i ia tūroro. Kāore tōna hoahoa e whakaū ana i te kerēme he rite te tika tātaritanga. Waihoki, ko te korenga o tētahi rerekētanga whai tikanga ā-tatauranga i roto i ngā tūroro 60, kāore e whakaū ana i te ōritetanga. Ko te uara ā-mahi o te whakamātautau kei tōna horopaki. I ngā wāhi kāore e wātea ana te rongoā karihi, i taea tonu e te kikorangi metilīni anake te tohu i tētahi repe i ia kēhi o tēnei whakamātautau. Koia i whakatakotoria ai e ngā kaituhi hei kōwhiringa whakakapi ka taea te whakamahi, kaua hei tikanga kua whakamātauhia he ōrite.

He kōrero mō te tohutoro tuatoru

I whakarārangihia i te tohutohu mō tēnei tuhinga tētahi arotake pūnahanaha o te tau 2025 e whakataurite ana i te kikorangi metilīni puta noa i ngā wāhi mate pukupuku. Kua unuhia taua pepa i te Hui-tanguru 2026 nā ngā tohutoro muhu, ā, i kī te kaituhi whakapā nā ngā taputapu āwhina atamai horihori ngā hapa. Kāore ōna tatauranga whakakotahi e whakaurua ki tēnei arotake. Kotahi te take me whakahua tonu: kei te horapa tonu ngā tārua tawhito o aua tatauranga i runga ipurangi, ā, kaua e whakahua hei taunakitanga.

Te kikorangi isosulfan me te kikorangi metilīni

Mō te whakataurite i te waikano kikorangi metilīni mō te mahere waitinana ki te kikorangi isosulfan, he ōrite te whakatauritenga painga me ngā huakore e tautokona ana e ngā tuhinga rangahau: mō te pāwera puta noa i te tinana, he pai ake te kikorangi metilīni; mō te wharanga kiko ā-rohe, kāore tētahi e tino pai ake, ā, he paku kino ake te werohanga kikorangi metilīni ki te mata o te kiko.

I kitea e tētahi arotake pūnahanaha o ngā tukanga repe kaitiaki 61,951 he takahanga anaphylaxis 94, arā, he pāwera tino kino (ko te pāpātanga whānui kua whakataumaha he āhua 0.061%). Ko te kikorangi isosulfan te mea i whai i te pāpātanga whakatau tata tino nui, he āhua 0.16%. I hono ngā rōrahi waikano iti ake me te tuku ki roto i te kiri ki ngā pāpātanga iti ake. E tohu ana hoki ngā raupapa kēhi haumanu tawhito ki taua āhua anō. I pūrongo tētahi raupapa kēhi nō tētahi pokapū ū i ngā tauhohenga pāwera i ngā tūroro 3 o ngā tūroro 351 i whiwhi kikorangi isosulfan. Nō reira, e whakaahuatia whānuitia ana te kikorangi metilīni he iti ake tōna kaha ki te whakaoho anaphylaxis, ahakoa kāore tōna tūraru e kore rawa.

Ko te raruraru e tino mōhiotia ana mō te kikorangi metilīni he raruraru ā-rohe: te mumura, te kōpukupuku tuwhera, me te mate o te kiko kiri, ngako rānei, inā koa i muri i te werohanga pāpaku, ki roto rānei i te kiri. I roto i te tātari-meta kikorangi metilīni o ngā rangahau 18, i mate te kiko kiri i te wāhi werohanga o ngā tūroro e rua i tētahi rangahau. I tētahi atu, i mate te kiko kiri me te kiko i raro i te kiri o tētahi tūroro i muri i te werohanga i raro i te kōmatawhānui. I tētahi rangahau tuatoru, i pā he tauhohenga pāwera kiri ki ngā tūroro e toru. Kāore i kitea i taua huinga raraunga he pāwera kikorangi metilīni e mōrearea ai te ora. Kāore rawa te whakamātautau matapōkere o ngā tūroro 60 i pūrongo i ngā pānga taha o te kikorangi metilīni, engari nā te mea e 30 noa ngā tūroro i whiwhi i taua matū i ia rōpū, he iti te taumaha o taua kitenga.

Kia pēhea te roa o te tae kikorangi e mau ana

He pātai tēnei ka uiuitia nuitia e ngā tūroro. Me wehewehe ngā waikano i te whakautu pono, nā te mea ko te nuinga o ngā raraunga mō te mauroa o te tae e pā ana ki te kikorangi patent, kaua ki te waikano i whiwhi ai te tūroro.

E mōhiotia paitia ana te mau o tētahi tae rangitahi āhua moko i muri i te kikorangi metilīni, ā, i pūrongo tētahi raupapa kēhi kikorangi metilīni nui koinei anake te pōauautanga i tika kia whakahuahia. Mō te kikorangi isosulfan, e whakaahua ana ngā pūrongo kua whakaputaina i te mau o te tae ki te kiri mō ētahi hāora ki ētahi wiki. Ko ngā tatauranga mō te mauroa o te tae e horapa ana, arā, he tae kitea i te 36.5% o ngā tūroro i te 12 marama, 23.6% i te 24 marama, me te 8.6% i tua atu i te 36 marama, nō tētahi raupapa kēhi i whāia whakamua e whakamahi ana i te kikorangi patent. He waikano whai hononga tēnei, engari he waikano motuhake, ā, kaua aua tatauranga e whakahua hei tatauranga kikorangi metilīni. I kitea e tētahi rōpū tūroro i whakataurite tika i ēnei waikano e rua te rerekē o te tae kiri i te 14.1% i whiwhi kikorangi metilīni, ki te 23.7% i whiwhi kikorangi patent. He iti ngā taunakitanga wā roa e whakataurite tika ana i te kikorangi metilīni ki te kikorangi isosulfan. Nō reira, he whakapae noa tā tētahi tuhinga e kī ana ka mau te tae kikorangi metilīni mō tētahi maha marama, ki te kore e whakaingoatia te waikano me te rangahau. He rangitahi te mimi kikorangi, kākāriki rānei, i muri i te ngongo o te waikano ki te tinana, ā, kua tuhia tēnei mō ngā waikano kikorangi whānui. Engari kāore tētahi o ngā rangahau repe kaitiaki i arotakehia i ine i tēnei, nō reira kāore e tika kia whakaurua he pāpātanga ki konei. Tērā pea ka hiahia hoki ngā kaipānui e aromatawai ana i te haumaru whānui ki te tirohanga whānui mō ngā pānga kino o te kikorangi metilīni me ōna pāhekoheko ki ngā rongoā.

Te whakataurite i ngā pūtohu me ngā putanga ine

Te pānui i ngā taunakitanga hei tangata e rapu ana i te māramatanga pū

E toru ngā wehewehenga hei tūāpapa mō tēnei kaupapa katoa. Tuatahi, ka ine te pāpātanga tautuhi mēnā ka mahi te tikanga ki te kimi i te repe; ka ine te pāpātanga tōraro hē mēnā ka taea te whakawhirinaki ki tētahi hua tōraro. He pai ake te ekenga o te kikorangi metilīni anake ki te whakamātautau tuatahi i tōna ekenga ki te tuarua. Tuarua, he tikanga kimi motuhake te waikano kikorangi me te pūtohu iraruke, nō reira he whakataurite hē te "waikano ki te pūtohu". Ko te tino kōwhiringa ko te waikano anake, e hiahiatia ana ina kāore he rongoā karihi, ki te waikano me te pūtohu, koia te tikanga tohutoro ina wātea. Tuatoru, me whakaingoa te waikano i ngā whakataurite haumaru: ko te kikorangi isosulfan te mea he nui ake te pāwera puta noa i te tinana; ko te kikorangi metilīni te mea e pā ana ki te raruraru mate kiko ā-rohe i muri i te werohanga pāpaku; ā, ko ngā tatauranga mō te mauroa rawa o te tae nō te kikorangi patent.

Mō te tūroro, te kaitiaki rānei, he pātai mārama ngā pātai hei kawe ki te mātanga pokanga: ko tēhea waikano ka whakamahia, ka whakakotahitia rānei ki tētahi pūtohu iraruke, e hia ngā repe kaitiaki e tangohia ana i te nuinga o te wā, ā, he aha ngā pāpātanga tautuhi me ngā pāpātanga tōraro hē kua kitea e tēnei tīma. Mō ngā kōrero whakamārama mō te mahi a te waikano puta noa i te tinana me te āhua o tana rangahau, tirohia te mātai rongoā me te tohatoha o te kikorangi metilīni me te āhua o te aromatawai i ngā rangahau haumanu kikorangi metilīni. Ā, e whakaatu ana te unuhanga pepa kua kōrerotia ake nei, me tirotiro te rā me te tūnga o ngā arotake ka whakaaturia ki a koe: i roto i tētahi huinga taunakitanga e tere panoni ana, kua unuhia kē pea tētahi tatauranga whakakotahi ahakoa kotahi tau noa iho tōna pakeke.