A system for oral care of patients ventilated with an ETT tube (120) comprising: a deformable fluid blocking element (200) reversibly mountable around an ETT (for example, side-mountable thereon), the fluid blocking element having: a midsection channel (205) sized to fit snugly and reversibly around the ventilation tube (120) when the fluid blocking element is mounted thereto and an outer surface configured, when the fluid blocking element is mounted, to fit snugly and reversibly into the back of the mouth of an adult human patient so as to span both lateral left-to- right tonsils and tongue-soft palate dimensions thereof, wherein the fluid blocking element (200) is reversibly inflatable to simultaneously press against the soft pallet and the tongue and/or the fluid blocking element (200) is collapsible and outwardly biased so that when placed in the back of the human mouth, the fluid blocking element expands so as to simultaneously press against the soft pallet and the tongue. Methods and kits are also disclosed herein.
