Ngeminyaka yesipiliyoni ekukhiqizweni kokukhiqizwa kwe-sputum ukuqedwa , kwe-mecanmed kungahambisa uhla oluningi lokudlidliza ukudlidliza ukudlidliza . ukudlidliza ukuqedwa kungahlangabezana nezicelo eziningi, sicela uthole inkonzo yethu yesikhathi esifike ngesikhathi nge-vibration sputum ukuqedwa mayelana nokuqedwa kwe-vibrate sputum ukuqedwa ngokuqothula ama-sputum . Ngaphezu kohlu lomkhiqizo ngezansi, ungaphinde wenze ngokwezifiso ukuqedwa kwakho okuhlukile kokudlidliza ngokwezidingo zakho ezithile.