AP BIOLOGY

Detailed explanation-1: -Dialysis sessions are usually 3–4 hours long. The adequacy of dialysis is not uniformly reported. A study of 463 patients reported a single-pool Kt/V of more than one in only 50% of sessions (16). In another study of 50 patients on twice-weekly treatment, only 28% had a standardized Kt/V of two per week (17).

Detailed explanation-2: -Often, you’ll visit a special center for dialysis about three times a week. Each session lasts three to four hours. Or, you may be able to do dialysis right at home three times a week or even daily. Home sessions are shorter, about 2 to 3 hours, and they’re easier for your body to tolerate.

Detailed explanation-3: -Four hours enable adequate delivery of dialysis through the removal of toxins. More important, together with a sensible dietary sodium intake, 4 hours of dialysis allow an adequate time over which excess fluid volume can be removed without provoking uncomfortable dialysis symptoms.

Detailed explanation-4: -However, a typical hemodialysis prescription (thrice weekly for four hours per session with a dialysis fluid flow rate of 800 mL/min) exposes the patient to more than 500 liters of water per week across the semipermeable membrane of the hemodialyzer.

Detailed explanation-5: -Dialysis at a Treatment Center Hemodialysis is most often done at a special dialysis center. You will have about 3 treatments a week. Treatment takes about 3 to 4 hours each time.