1. He mea hanga ki te rauemi PVC e pai ana ki te taiao, e whai ana i ngā uaua ara manawa me te hanganga paparanga mucosal o te trachea, me ngā paparanga tae mārama (he maeneene te kakano o te trachea noa, he pupuhi me ngā taipitopito huware o te trachea huango), he pakari, he kore kakara, he pai mō te whakaaturanga whakaako mo te wa roa.
2. Kei roto ko ngā tauira e rua e rite ana mō te trachea noa me te trachea mate huango, me te papa whakaatu whakamārama e tohu mārama ana i ngā rerekētanga hanganga o ngā uaua ara manawa me ngā paparanga mucosal. He pumau te hanganga, ā, he māmā noa te whakaatu whakatairite.
3. He mekameka tuku kua pakeke, he rawaka ngā taonga, e tautoko ana i te hoko nui, he tere te tuku i muri i te tono, e whakarite ana i te ahunga whakamua o te whakaako me te rangahau.
4. He ngāwari te tāuta i te tauira me te papa whakaatu, he rite tonu ki te whakaako i ngā whakamārama mai i te pouaka, kāore he huihuinga uaua.
e hiahiatia ana, e ngāwari ana te whakamahi mā ngā kaimahi hauora, ngā kaiako me ngā ākonga.