Abstract: A method and apparatus for detecting respiratory distress is disclosed wherein the increasing force of contraction of the heart, which occurs during a respiratory distress condition is detected and utilized to signal the condition. More particularly, the increasing force of contraction of a patient's heart, which affects the electrical signal generated by an impedance pneumograph may be detected by utilizing the heart beat of the patient to generate a trigger pulse. The trigger pulse is used as a timing means to enable the effects of the heart as registered on the impedance pneumograph, to be detected and compared, with an increase in amplitude of the contractions of the heart indicating a respiratory failure.

Abstract: A partitioning device is provided for swimming pools to efficiently treat the water in swimming pools and to conveniently store the water therein during periods of nonuse. The device comprises a water tight bag constructed from a flexible fabric material such as plastic and appropriately sized and shaped to occupy at least the entire volume of the swimming pool. The partitioning device has at least one open end that can be attached to a conduit extending from a pumping and filtering device .Treated water is pumped into the partitioning device thereby providing an efficient separation between treated and untreated water. The treated water may be stored in the partitioning device for any convenient period of time. The device may easily be removed from the pool thereby leaving the pool filled with treated water.