Makina opumira a bakiteriya ndi chipangizo chachipatala chomwe chimagwiritsidwa ntchito kusefa mabakiteriya, mavairasi, ndi zonyansa zina kuchokera mumlengalenga zomwe odwala amakoka panthawi ya anesthesia kapena mpweya wabwino.Ndi fyuluta yotayika yomwe imayikidwa mu dera lopuma pakati pa wodwala ndi makina opangira mpweya kapena makina oletsa ululu.Fyulutayo idapangidwa kuti itseke ndikuchotsa mabakiteriya ndi tinthu tina toyipa tomwe timayambitsa matenda opuma ndi zovuta zina.Kupumira kwa bakiteriya fyuluta ndi gawo lofunikira pakuwongolera matenda m'zipatala ndi malo azachipatala, kuthandiza kuchepetsa kufalikira kwa matenda opatsirana ndikuteteza odwala ndi ogwira ntchito yazaumoyo.