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  • Title: Safety and tolerability of subcutaneous treprostinil in newborns with congenital diaphragmatic hernia and life-threatening pulmonary hypertension.
    Author: Carpentier E, Mur S, Aubry E, Pognon L, Rakza T, Flamein F, Sharma D, Tourneux P, Storme L.
    Journal: J Pediatr Surg; 2017 Sep; 52(9):1480-1483. PubMed ID: 28389079.
    Abstract:
    BACKGROUND: Prolonged pulmonary hypertension (PH) is highly predictive for pulmonary morbidity and death in infants with congenital diaphragmatic hernia (CDH). OBJECTIVES: To report the effects and tolerability of subcutaneous treprostinil in newborns with severe CDH and late life-threatening PH. METHODS: We recorded clinical and echocardiography data before and after starting subcutaneous treprostinil, on patients with severe CDH and late PH, refractory to inhaled nitric oxide and oral sildenafil. RESULTS: 14 patients were treated with treprostinil (gestational age: 39.1±2.0weeks; birth weight: 3200±600g). Prior to treatment, the pre- and post-ductal SpO2 difference (Δ SpO2) was 14±10%. Treprostinil was initiated at a median age of 12days [5-157]. After starting treprostinil, ΔSpO2 decreased to 3% at day 7 (p<0.05), and the mean blood flow velocities in the right pulmonary arteries increased by 110% (p<0.05). 2 of the 14 patients died. At the age of follow up (12months to 3years), the 12 surviving infants were all weaned from respiratory support and discharged home. CONCLUSION: The subcutaneous treprostinil improves pulmonary hemodynamics and outcomes in infants with CDH and life-threatening PH. We suggest that the treatment should be considered in infants with severe CDH and late PH. TYPE OF STUDY: Case series with no comparison group. LEVEL OF EVIDENCE: Level IV.
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