Treatment Options for Restless Leg Syndrome in Chronic Kidney Disease

First-Line Treatment Options

• The American Academy of Sleep Medicine recommends gabapentin as the first-line treatment for patients with restless legs syndrome (RLS) and end-stage renal disease (ESRD), with a conditional recommendation and very low certainty of evidence 1
• IV iron sucrose is recommended for patients with RLS and ESRD who have ferritin < 200 ng/mL and transferrin saturation < 20%, with a conditional recommendation and moderate certainty of evidence 1
• Vitamin C supplementation can be beneficial for patients with RLS and ESRD, with a conditional recommendation and low certainty of evidence 1

Iron Therapy Considerations

• The American Academy of Sleep Medicine suggests checking serum iron studies, including ferritin and transferrin saturation, in all patients with clinically significant RLS, and considering iron supplementation if serum ferritin ≤75 ng/mL or transferrin saturation <20% in general CKD patients 1
• For ESRD patients specifically, IV iron sucrose is recommended if ferritin <200 ng/mL and transferrin saturation <20%, with a conditional recommendation and moderate certainty of evidence 1

Medications to Avoid or Use with Caution

• The American Academy of Sleep Medicine suggests against the standard use of dopaminergic agents, such as levodopa, pramipexole, ropinirole, and rotigotine, due to the risk of augmentation, with a conditional recommendation and low certainty of evidence 1
• Ropinirole is not recommended as standard treatment, with a conditional recommendation and moderate certainty of evidence, due to the risk of augmentation 3

Treatment Algorithm

• The first step in the treatment algorithm is to check iron status and supplement if deficient, with IV iron sucrose for ESRD patients with ferritin <200 ng/mL, with a conditional recommendation and moderate certainty of evidence 1
• The second step is to start gabapentin at a low dose adjusted for renal function, with a conditional recommendation and very low certainty of evidence 1
• The third step is to consider adding vitamin C supplementation, with a conditional recommendation and low certainty of evidence 1

Monitoring and Follow-up

• Regularly reassess iron status in CKD patients with RLS, with a conditional recommendation and moderate certainty of evidence 2
• Watch for augmentation if dopaminergic agents are used despite recommendations against their standard use, with a conditional recommendation and low certainty of evidence 2