Resuscitators

A resuscitator including a hand-held unit having an inlet adapted to be connected to a source of breathing gas, an outlet for providing a supply of breathing gas to a patient, and an arrangement including a timer for providing cycles of breathing gas of defined duration to the outlet, characterized in that the unit includes first and second manually-operable controls accessible on the outside of the unit, and that the first and second controls are both separately operable such that either can initiate the start of a breathing cycle of supply of gas to the outlet independent of operation of the other control, the first and second controls being spaced from one another and arranged such that each can be operated independently of the other.