In addition, the patient will benefit from modest diuresis, with improvement of oxygenation, as well as nocturnal desaturation and oxygen requirements.  I have encouraged the patient to increase her dose of Lasix from 100 to 120 mg by mouth every morning as previously prescribed.  I have also asked her to add Lasix in additional late afternoon to evening dose of Lasix at 40 mg by mouth at that time.  She was instructed to take between one and two K-Tab with her evening dose of Lasix (10 to 20 mEq).