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  • Title: Efficacy and safety of gabapentin for uremic pruritus and restless legs syndrome in conservatively managed patients with chronic kidney disease.
    Author: Cheikh Hassan HI, Brennan F, Collett G, Josland EA, Brown MA.
    Journal: J Pain Symptom Manage; 2015 Apr; 49(4):782-9. PubMed ID: 25220049.
    Abstract:
    CONTEXT: Pruritus and restless legs syndrome (RLS) frequently affect patients with chronic kidney disease (CKD) and end-stage kidney disease (ESKD), impacting the quality of life. Gabapentin (1-aminomethyl cyclohexane acetic acid) alleviates these symptoms in hemodialysis (HD) patients, but data are lacking for patients on the conservative pathway. OBJECTIVES: To determine the safety and effectiveness of gabapentin for pruritus or RLS in conservatively managed patients (n = 34) with CKD and ESKD. METHODS: This was a single-center retrospective cohort study. We compared dosing and side effects in 34 CKD/ESKD patients with similar patients receiving HD (n = 15). RESULTS: Forty-four percent of conservatively managed patients complained of RLS and/or pruritus; 18% were excluded for a nonuremic cause of symptom. Thirty-four patients were included in the final analysis. The most common starting daily dose of gabapentin was the equivalent of 50 mg (44.1%) or 100 mg (38.2%) daily, with the median daily dose of 100 mg (range 39-455 mg). Side effects occurred in 47% of patients, with 17% discontinuing gabapentin. Gabapentin reduced symptoms of pruritus (P < 0.001) and RLS (P < 0.05). There was no statistical difference when comparing HD and conservatively managed patients for daily starting dose (P = 0.88), median dose (P = 0.84), and final dose (P = 0.18). Patients conservatively managed were more likely to manifest side effects compared with HD patients (47.1% vs. 14.3%, P = 0.023). Dose was not found to be a factor associated with side effects in univariate analysis. CONCLUSION: Gabapentin is a viable treatment for conservatively managed CKD and ESKD patients with pruritus and/or RLS, but side effects are common. Gabapentin should be used with caution although higher doses do not appear to be a factor associated with side effects.
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