I need some more info about cpap humifiers and heart failure. A week or so ago someone posted that they had learned that cpap humidifiers can intensify congestive heart failure. I can't find the post and I need to know where you received that info so I can discuss it with my doctors. I've had my machine a month and can't get my fluid retention under control without increasing the amount of lasix I take. Nothing else in my life has changed. Neither the sleep clinic nor my cardiologist's office knows anything about the humidifier causing problems with cpap. In fact, the nurse at my cardio says usually a cpap makes the chf better. Can anybody help me? I see my primary tomorrow.