Diabetes Care, Vol 21, Issue 10 1699-1706, Copyright © 1998 by American Diabetes Association

ARTICLES

Effect of domperidone on the health-related quality of life of patients with symptoms of diabetic gastroparesis

CE Farup, NK Leidy, M Murray, GR Williams, L Helbers and EM Quigley
Janssen Research Foundation, Titusville, New Jersey 08560, USA.

OBJECTIVE: To describe the health-related quality of life (HRQOL) of patients with insulin-treated diabetes and symptoms of diabetic gastroparesis and to assess the impact of domperidone on HRQOL in these patients. RESEARCH DESIGN AND METHODS: This two-phase multicenter study was part of a safety and efficacy investigation. Phase I involved 4-week single-blind treatment with domperidone 20 mg q.i.d. (n=269). Patients demonstrating significant symptomatic improvement (n=208) continued to phase 11, a 4-week, double-blind, parallel-group study with patients receiving placebo (n=103) or domperidone (n=105). Patients completed the Medical Outcomes Study Short-Form-36 Health Survey at selection and at the end of each phase. Physical component summary (PCS) and mental component summary (MCS) scores served as primary parameters, and the eight subscales were secondary parameters. RESULTS: HRQOL scores of subjects enrolled in the trial were significantly lower than norms from the general population and people with diabetes (P < 0.001). Subjects experiencing symptomatic improvement after 4 weeks of single-blind treatment demonstrated significant improvement in all HRQOL parameters (P < 0.001); PCS, MCS, and six subscale scores of nonresponders did not change. Between-group change score differences were significant for PCS, MCS, and seven subscales (P < 0.05 to P < 0.001). During phase II, the domperidone group maintained their HRQOL; the placebo group showed a significant decline in PCS and four subscales (P < 0.05). The between-group difference in the PCS score change was statistically significant (-1.77 vs. 0.65, P=0.05). CONCLUSIONS: Results suggest that patients with symptoms of diabetic gastroparesis experience notable HRQOL impairment and that symptomatic relief with domperidone is accompanied by improvements in HRQOL that can be sustained over 4 weeks of treatment.
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