Background And Objective: There are few published data on the efficacy of i.v. iloprost in pulmonary arterial hypertension (PAH). We present long-term outcomes in PAH patients receiving i.v. iloprost in a large UK referral centre.
Methods: Eighty patients with idiopathic PAH (iPAH, n = 46) or PAH associated with connective tissue disease (CTD-PAH, n = 34) were identified as receiving domiciliary i.v. iloprost between January 1999 and April 2015. Baseline characteristics, doses achieved, functional class at follow-up and survival data were retrieved from hospital databases.
Results: Median maximum dose achieved was 4.6 ng/kg/min in the iPAH group and 5.0 ng/kg/min in CTD-PAH patients. Exercise capacity significantly improved in the first 6 months of therapy in IPAH patients. Overall 1-, 3- and 5-year survival was 78%, 64% and 52% in iPAH (P = 0.002) and 64%, 26% and 21% in CTD-PAH. Independent predictors of survival were age and exercise capacity.
Conclusion: We report improved survival to that previously reported in iPAH patients treated with domiciliary i.v. iloprost. This may be in part related to higher administered doses. Patients with CTD-PAH had poorer survival, reinforcing the need for early transplantation referral in suitable patients.
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