iv cannula yog dab tsi?

IV cannula, tseem hu ua intravenous cannula lossis IV catheter, yog cov cuab yeej kho mob siv los tswj cov tshuaj, kua dej, lossis khoom noj khoom haus ncaj qha rau hauv cov hlab ntsha. Nws yog ib lub raj me me, hloov tau yooj yim uas tau muab tso rau hauv cov hlab ntsha ntawm caj npab, tes, lossis ko taw siv rab koob. Thaum lub koob raug tshem tawm, lub cannula tseem nyob hauv cov hlab ntsha thiab ruaj ntseg rau hauv qhov chaw nrog hnav khaub ncaws. IV cannula tso cai rau kev nkag mus rau cov hlab ntsha sai thiab muaj txiaj ntsig thiab feem ntau siv hauv tsev kho mob, tsev kho mob, thiab chaw kho mob xwm txheej ceev. Muaj ntau qhov sib txawv ntawm IV cannulas muaj, txij li qhov me me rau cov menyuam yaus mus rau qhov loj dua rau cov neeg laus lossis cov neeg mob uas xav tau cov kua dej ntau.