Nrog rau kev lag luam hauv nroog, qhov teeb meem nres tsheb tau dhau los ua teeb meem loj cuam tshuam rau kev tsheb khiav hauv nroog. Txhawm rau tsim kom muaj chaw nres tsheb zoo dua, kev sib xyaw ua ke ntawm COMA daim ntawv tso cai daim ntawv lees paub cov tshuab thiab cov chaw nres tsheb ua rau muaj kev yooj yim thiab yooj yim rau cov neeg tsav tsheb, tso cai rau kev nkag ncaj qha yam tsis nres ntawm qhov nkag thiab tawm. Daim ntawv tso cai daim ntawv lees paub cov tshuab tau pab tsim lub sijhawm tshiab ntawm kev nres tsheb ntse.
COMA daim ntawv tso cai daim ntawv lees paub cov tshuab muaj ntau yam kev siv thiab tsis xav tau ntawm ib puag ncig sab nraud. Txawm nyob hauv tsev kawm ntawv, chaw nres tsheb loj, kev lis kev cai, tshav dav hlau, lossis lwm qhov chaw, cov kev daws teeb meem tsim nyog tuaj yeem tsim kho raws li qhov chaw sib txawv. Lub kaw lus kaw cov ntaub ntawv ntawm ob lub tsheb mus tas li thiab ib ntus hauv lub sijhawm tiag tiag thiab xa mus rau qhov chaw tswj hwm, cia cov thawj coj saib xyuas cov ntaub ntawv txhua lub sijhawm thaum muaj xwm txheej. Tsis tas li ntawd, daim ntawv tso cai daim ntawv lees paub cov tshuab tshem tawm qhov xav tau ntawm daim npav tswj hwm rau ob tus neeg tsav tsheb thiab cov thawj coj, muab kev yooj yim thiab ceev.