a 30 yr old paraplegic male has a long history of UTI secondary to an indwelling foley catheter.he develops fever and hypotension requiring hospitalization, fluid therapy and intravenous antibiotics.he improves but over 1 week becomes increasingly shoness of breath and tachypneic.he develops frothy sputum ,diffuse alveolar infiltrates there is no fever jugular venous destention ,s3 gallop or peripheral or sacral edema.the best prognosis is ?