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Phosphodiesterase inhibitors for persistent pulmonary hypertension of the newborn: a review.

Abstract
Persistent pulmonary hypertension of the newborn (PPHN) is a complex syndrome with multiple causes, with an incidence of 0.43-6.8/1,000 live births and a mortality of 10-20%. Survivors have high morbidity in the forms of neurodevelopmental and audiological impairment, cognitive delays, hearing loss, and a high rate of rehospitalization. The optimal approach to the management of PPHN remains controversial. Inhaled nitric oxide (iNO) is currently regarded as the gold standard therapy, but with as many as 30% of cases failing to respond, has not proven to be the single magic bullet. Given the complex pathophysiology of the disease, any such magic bullet is unlikely. A number of recent studies have suggested a role for specific phosphodiesterase (PDE) inhibitors in the management of PPHN. Sildenafil, a specific PDE5 inhibitor, appears the most promising of such agents. We aim to review the current status and limitations of iNO and the potential of PDE inhibitors in the management of PPHN. The reasons why caution is warranted before specific PDE5 inhibitors like sildenafil are labelled as potential magic bullets for PPHN will be discussed. The need for randomized-controlled trials to determine the safety, efficacy, and long-term outcome following treatment with sildenafil in PPHN is emphasized.
AuthorsJ N Travadi, S K Patole
JournalPediatric pulmonology (Pediatr Pulmonol) Vol. 36 Issue 6 Pg. 529-35 (Dec 2003) ISSN: 8755-6863 [Print] United States
PMID14618646 (Publication Type: Journal Article, Review)
CopyrightCopyright 2003 Wiley-Liss, Inc.
Chemical References
  • Endothelium-Dependent Relaxing Factors
  • Phosphodiesterase Inhibitors
  • Piperazines
  • Purines
  • Purinones
  • Sulfones
  • Nitric Oxide
  • Dipyridamole
  • Sildenafil Citrate
  • Phosphoric Diester Hydrolases
  • zaprinast
  • Pentoxifylline
Topics
  • Dipyridamole (therapeutic use)
  • Endothelium-Dependent Relaxing Factors (therapeutic use)
  • Humans
  • Infant, Newborn
  • Nitric Oxide (therapeutic use)
  • Pentoxifylline (therapeutic use)
  • Persistent Fetal Circulation Syndrome (drug therapy, physiopathology)
  • Phosphodiesterase Inhibitors (therapeutic use)
  • Phosphoric Diester Hydrolases (physiology)
  • Piperazines (therapeutic use)
  • Purines
  • Purinones (therapeutic use)
  • Sildenafil Citrate
  • Sulfones

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