title: Effect of prostaglandin E1 inhalation on pulmonary hypertension following corrective surgery for congenital heart disease.
abstract: BACKGROUND
  Intravenous infusion of prostaglandin E1 (PGE1) has been used to treat pulmonary arterial hypertension (PAH); however, the efficacy and safety of inhaled PGE1 is unclear.
  
  
  OBJECTIVE
  To investigate the effect of inhaled PGE1 on PAH following corrective surgery for congenital heart disease.
  
  
  METHODS
  Sixty patients with postoperative residual PAH following corrective surgery for congenital heart disease were randomly assigned to a control group, a PGE1 infusion group (intravenous PGE1 infusion; 30 ng/kg/min daily for 10 days) or a PGE1 inhalation group (100 μg nebulized PGE1 every 8 h for 10 days). Systolic blood pressure, mean pulmonary arterial pressure, arterial oxygen pressure, oxygen saturation and serum endothelin-1 level were measured before and after the treatment.
  
  
  RESULTS
  At the end of the study, the mean pulmonary arterial pressure in the two PGE1 groups were lower than in the control group (P<0.01), whereas the mean arterial oxygen pressure was higher (P<0.01). Compared with the PGE1 infusion group, the mean pulmonary arterial pressure in the PGE1 inhalation group was lower (P<0.01) whereas the arterial oxygen pressure was higher (P<0.01). The mean endothelin-1 levels in the two PGE1 groups were lower than in the control group (P<0.01), but there was no statistically significant difference in endothelin-1 levels between the PGE1 inhalation and infusion groups (P>0.05).
  
  
  CONCLUSIONS
  In pediatric patients with PAH, PGE1 inhalation was associated with a reduction in pulmonary arterial pressure and improvement in arterial blood oxygen levels.
authors.affiliation: Department of Cardiac Surgery, Charles Sturt University, Wagga Wagga, New South Wales, Australia;
authors.forename: Chun-Yan
authors.initials: CY
authors.lastname: Zhang
authors.forename: Zeng-Shan
authors.initials: ZS
authors.lastname: Ma
authors.forename: Long-Le
authors.initials: LL
authors.lastname: Ma
authors.forename: Le-Xin
authors.initials: LX
authors.lastname: Wang
keywords: Congenital heart disease; Postoperative; Prostaglandin E1; Pulmonary hypertension