21. The filters, called dialyzers , help remove waste from the blood of patients with failed kidneys. 22. While the government allows re-use, some manufacturers still caution that dialyzers be used only once. 23. Despite the controversy, patients have no choice but to re-use dialyzers at National Medical clinics. 24. Baxter will also take back filters _ or dialyzers _ from all the hospitals worldwide, he said. 25. Baxter, based in suburban Chicago, recalled and has stopped manufacturing the dialyzers . _ _ _= 26. This practice includes the cleaning of a used dialyzer to be reused multiple times for the same patient. 27. Salt River Dialysis Center was cited last year for switching two patients'blood filtering system, or dialyzers . 28. All of the patients had been treated the same day using dialyzers that were more than 11 years old. 29. Five died within 13 months, but researchers said their deaths could not be definitively linked to the dialyzers . 30. First-use syndrome is rare, and is virtually eliminated if dialyzers are properly cleaned before they are used.
