A Tus neeg mob saib xyuas yog ib qho khoom siv kho mob hluav taws xob uas muaj ib lossis ntau lub ntsuas ntsuas, cov khoom siv ua haujlwm, thiab cov tshuaj ntsuam xyuas (tseem hu ua 'monitor') uas muab thiab sau rau cov kws kho mob cov neeg mob cov cim tseem ceeb (lub cev kub, ntshav siab, mem tes thiab ua pa tus nqi) lossis ntsuas kev ua haujlwm ntawm ntau lub cev hauv nruab nrog cev xws li ECG saib, EKG saib.