Abstract: An apparatus for receiving fluids and wastes of a bedridden patient including a mattress with an elongated cavity generally in the middle portion, the cavity being the depth of the mattress and having an upper edge defined by the top surface of the mattress adjacent the cavity. A plug is selectively movable between an inserted position, which inserted position fills the cavity and makes the top surface of the mattress even. When the plug is in the retracted position, the cavity is open. A bottom sheet fitted over the mattress has a head portion, a foot portion and sides which cover the mattress. The bottom sheet also includes an opening registerable with the cavity in the mattress. An auxiliary short sheet is fitted over the bottom sheet and includes a body section that extends at least half way down the mattress to cover the plug. A waste container is also provided for inserting into the cavity of the mattress when the cavity is open.