Advances in the Management of Pediatric Pulmonary Hypertension

Authors: Oishi, Peter; Datar, Sanjeev A; Fineman, Jeffrey R

Source: Respiratory Care, Volume 56, Number 9, September 2011 , pp. 1314-1340(27)

Publisher: The Journal Respiratory Care Company

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Abstract:

Pulmonary hypertension is a rare disease in neonates, infants, and children, and is associated with substantial morbidity and mortality. An adequate understanding of the controlling pathophysiologic mechanisms is lacking. Moreover, a minority of research is focused specifically on neonatal and pediatric populations. Although therapeutic options have increased over the past several decades, they remain limited. In advanced pulmonary hypertension, progressive pulmonary vascular functional and structural changes ultimately cause increased pulmonary vascular impedance, right-ventricular failure, and death. Management includes the prevention and/or treatment of active pulmonary vasoconstriction, the support of right-ventricle function, treatment of the underlying disease (if possible), and the promotion of regressive remodeling of structural pulmonary vascular changes. Most currently available therapies augment or inhibit factors, or mediators of their downstream signaling cascades, that originate in the pulmonary vascular endothelium. These pathways include nitric-oxide/cyclic guanosine monophosphate (cGMP), prostacyclin, and endothelin-1. The ability to reverse advanced structural changes remains an as yet unattained goal. This paper reviews the epidemiology, pathophysiology, current treatments, and emerging therapies related to neonatal and pediatric pulmonary hypertension.

Keywords: ROCK; children; endothelium; infants; neonatal; pediatric; pulmonary hypertension; pulmonary vascular disease; rho kinase

Document Type: Research Article

DOI: http://dx.doi.org/10.4187/respcare.01297

Affiliations: Division of Pediatric Critical Care Medicine, University of California, San Francisco, California, USA

Publication date: September 1, 2011

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